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This chapter describes the function and displays the syntax of each ISO CLNS command. For more information about defaults and usage guidelines, see the corresponding chapter of the Network Protocols Command Reference, Part 2.
area-password password
no area-password [password]
Use the area-password router configuration command to configure the area authentication password. The no form of this command disables the password.
| password | Password you assign. |
Use the clear clns cache EXEC command to clear and reinitialize the CLNS routing cache.
Use the clear clns es-neighbors EXEC command to remove end system (ES) neighbor information from the adjacency database.
Use the clear clns is-neighbors EXEC command to remove intermediate system (IS) neighbor information from the adjacency database.
Use the clear clns neighbors EXEC command to remove CLNS neighbor information from the adjacency database.
Use the clear clns route EXEC command to remove all of the dynamically derived CLNS routing information.
Use the clear tarp counters EXEC command to clear all Target Identifier Address Resolution Protocol (TARP) counters that are shown with the show tarp traffic command.
Use the clear tarp ldb-table EXEC command to clear the system ID-to-sequence number mapping entries stored in the TARP loop-detection buffer table.
Use the clear tarp tid-table EXEC command to clear the dynamically created TARP target identifier (TID)-to-network service access point (NSAP) address mapping entries stored in TID cache.
[no] clns access-group name [in | out]
Use the clns access-group interface configuration command to filter transit CLNS traffic going either into or out of the router or both on a per-interface basis. Use the no form of this command to disable filtering of transit CLNS packets.
| name | Name of the filter set or expression to apply. |
| in | (Optional) Filter should be applied to CLNS packets entering the router. |
| out | (Optional) Filter should be applied to CLNS packets leaving the router. If you do not specify an in or out keyword, out is assumed. |
[no] clns adjacency-filter {es | is} name
Use the clns adjacency-filter interface configuration command to filter the establishment of CLNS end system (ES) and intermediate system (IS) adjacencies. Use the no form of this command to disable this filtering.
| es | End system adjacencies are to be filtered. |
| is | Intermediate system adjacencies are to be filtered. |
| name | Name of the filter set or expression to apply. |
Use the clns checksum interface configuration command to enable checksum generation when ISO CLNS routing software sources a CLNS packet. Use the no form of this command to disable checksum generation.
Use the clns cluster-alias interface configuration command to allow multiple systems to advertise the same system ID as other systems in end-system hello messages. The no form of this command disables cluster aliasing.
clns configuration-time seconds
no clns configuration-time
Use the clns configuration-time global configuration command to specify the rate at which ES hellos and IS hellos are sent. You can restore the default value by using the no form of this command.
| seconds | Rate in seconds at which ES and IS hello packets are sent. The default is 60 seconds. |
clns congestion-threshold number
no clns congestion-threshold
Use the clns congestion-threshold interface configuration command to set the congestion experienced bit if the output queue has more than the specified number of packets in it. A number value of zero or the no form of the command prevents this bit from being set. Use the no form of this command to remove the parameter setting and set it to 0.
| number | Number of packets that are allowed in the output queue before the system sets the congestion-experienced bit. The value zero (0) prevents this bit from being set. The default is 4. |
Use the clns dec-compatible interface configuration command to allow IS hellos sent and received to ignore the N-selector byte. Use the no form of this command to disable this feature.
Use the clns enable interface configuration command if you do not intend to perform any static or dynamic routing on an interface, but intend to pass ISO CLNS packet traffic to end systems. Use the no form of this command to disable ISO CLNS on a particular interface.
[no] clns erpdu-interval milliseconds
Use the clns erpdu-interval interface configuration command to determine the minimum interval time, in milliseconds, between error PDUs (ERPDUs). A milliseconds value of zero or the no form of this command turns off the interval and effectively sets no limit between ERPDUs.
| milliseconds | Minimum interval time (in milliseconds) between ERPDUs. The default is 10 ms. |
Use the clns esct-time interface configuration command to supply an end system configuration timer option in a transmitted IS hello packet that tells the ES how often it should transmit ES hello packet protocol data units (PDUs). Use the no form of this command to restore the default value and disable this feature.
| seconds | Time, in seconds, between ESH PDUs. Range is from 0 to 65535. The default is 0 seconds. |
clns es-neighbor nsap snpa
no clns es-neighbor nsap
Use the clns es-neighbor interface configuration command to list all end systems that will be used when you manually specify the NSAP-to-SNPA mapping. The SNPAs are the MAC addresses. Use the no form of this command to delete the ES neighbor.
| nsap | Specific NSAP to map to the MAC address. |
| snpa | Data link (MAC) address. |
clns filter-expr ename term
clns filter-expr ename not term
clns filter-expr ename term or term
clns filter-expr ename term and term
clns filter-expr ename term xor term
no clns filter-expr ename
Use one or more clns filter-expr global configuration commands to combine CLNS filter sets and CLNS address templates into complex logical NSAP pattern-matching expressions. The no form of this command deletes the expression. There are many forms of this command.
| ename | Alphanumeric name to apply to this filter expression. |
| term | Filter expression term. A term can be any of the following:
ename--Another, previously defined, filter expression. sname (or destination sname)--A previously defined filter set name, with the filter set applied to the destination NSAP address. source sname--A previously defined filter set name, with the filter set applied to the source NSAP address. |
clns filter-set sname [permit | deny] template
no clns filter-set sname
Use one or more clns filter-set global configuration commands to build a list of CLNS address templates with associated permit and deny conditions for use in CLNS filter expressions. CLNS filter expressions are used in the creation and use of CLNS access lists. The no form of this command deletes the entire filter set.
| sname | Alphanumeric name to apply to this filter set. |
| permit | deny | (Optional) Addresses matching the pattern specified by template are to be permitted or denied. If neither permit nor deny is specified, permit is assumed. |
| template | Address template, template alias name, or the keyword default. Address templates and alias names are described under the description of the clns template-alias global configuration command. The default keyword denotes a zero-length prefix and matches any address. |
clns holding-time seconds
no clns holding-time
Use the clns holding-time global configuration command to allow the sender of an ES hello or IS hello to specify the length of time you consider the information in the hello packets to be valid. You can restore the default value (300 seconds or 5 minutes) by using the no form of this command.
| seconds | Length of time in seconds during which the information in the hello packets is considered valid. The default is 300 seconds (5 minutes). |
Use the clns host global configuration command to define a name-to-NSAP mapping that can then be used with commands requiring NSAPs.
| name | Desired name for the NSAP. The first character can be either a letter or a number, but if you use a number, the operations you can perform are limited. |
| nsap | NSAP that the name maps to. |
clns is-neighbor nsap snpa
no clns is-neighbor nsap
Use the clns is-neighbor interface configuration command to list all intermediate systems that will be used when you manually specify the NSAP-to-SNPA mapping. The SNPAs are the MAC addresses. Use the no form of this command to delete the specified IS neighbor.
| nsap | NSAP address of a specific intermediate system to enter as a neighbor to a specific MAC address. |
| snpa | Data link (MAC) address. |
Use the clns mtu interface configuration command to set the maximum transmission unit (MTU) packet size for the interface. The no form of this command restores the default and maximum packet size.
| size | Maximum packet size in bytes. The minimum value is 512; the default and maximum packet size depends on the interface type. |
[no] clns net {net-address | name}
Use the clns net global configuration command to assign a static address for a router. If the Cisco IOS software is configured to support ISO CLNS but is not configured to dynamically route CLNS packets using ISO-IGRP or IS-IS, use this command to assign an address to the router. The no form of this command removes any previously configured NET or NSAP address.
| net-address | Network Entity Title (NET) address. See this command in the Network Protocols Command Reference, Part 2 for the algorithm used. |
| name | CLNS host name to be associated with this interface. |
[no] clns net {nsap-address | name}
Use the clns net interface configuration command to assign an NSAP address or name to a router interface. If the Cisco ISO software is configured to support ISO CLNS, but is not configured to dynamically route CLNS packets using a ISO-IGRP or IS-IS, use this command to assign an address to the router. The no form of this command removes any previously configured NSAP address.
| nsap-address | Specific NSAP address. |
| name | Name to be associated with this interface. |
clns packet-lifetime seconds
no clns packet-lifetime
Use the clns packet-lifetime global configuration command to specify the initial lifetime for locally generated packets. The no form of this command removes the parameter's settings.
| seconds | Packet lifetime in seconds. The default is 32 seconds. |
[no] clns rdpdu-interval milliseconds
Use the clns rdpdu-interval interface configuration command to determine the minimum interval time, in milliseconds, between redirect PDUs (RDPDUs). A milliseconds value of zero or the no form of this command turns off the interval rate and effectively sets no limit between RDPDUs.
| milliseconds | Minimum interval time (in milliseconds) between RDPDUs. The default is 100 ms. |
clns route nsap-prefix type number [snpa-address]
no clns route nsap-prefix
Use this form of the clns route global configuration command to create an interface static route. The no form of the command removes this route.
| nsap-prefix | Network service access point prefix. This value is entered into a static routing table and used to match the beginning of a destination NSAP. The longest NSAP-prefix entry that matches is used. |
| type | Interface type. |
| number | Interface number. |
| snpa-address | (Optional) Specific SNPA address. Optional for serial links; required for multiaccess networks. |
clns route nsap-prefix {next-hop-net | name}
no clns route nsap-prefix
Use this form of the clns route global configuration command to enter a specific static route. NSAPs that start with nsap-prefix are forwarded to next-hop-net or the name of the next hop. The no form of this command removes this route.
| nsap-prefix | Network service access point prefix. This value is entered into a static routing table and used to match the beginning of a destination NSAP. The longest NSAP-prefix entry that matches is used. |
| next-hop-net | Next-hop NET. This value is used to establish the next hop of the route for forwarding packets. |
| name | Name of the next hop node. This value can be used instead of the next-hop NET to establish the next hop of the route for forwarding packets. |
Use the clns route-cache interface configuration command to allow fast switching through the cache. To disable fast switching, use the no form of this command.
clns route default nsap-prefix type number
no clns route default
Use this form of the clns route default global configuration command to configure a default zero-length prefix rather than type an NSAP prefix. The no form of this command removes this route.
| nsap-prefix | Network service access point prefix that is a default zero-length prefix. |
| type | Interface type. Specify the interface immediately followed by the unit number; there is no space between the two. |
| number | Interface number. |
clns route nsap-prefix discard
no clns route nsap-prefix
Use this form of the clns route discard global configuration command to tell a router explicitly to discard packets with NSAP addresses that match the specified nsap-prefix. The no form of this command removes this route.
| nsap-prefix | Network service access point prefix. This value is entered into a static routing table and used to match the beginning of a destination NSAP. The longest NSAP-prefix entry that matches is used. |
| discard | Explicitly tells a router to discard packets with NSAPs that match the specified nsap-prefix. |
Use the clns router isis interface configuration command to enable IS-IS routing for OSI on a specified interface. Use the no form of this command with the appropriate area tag to disable IS-IS on the interface.
| tag | (Optional) Meaningful name for a routing process. If not specified, a null tag is assumed. It must be unique among all CLNS router processes for a given router. Use the same text for the argument tag as specified in the router isis global configuration command. |
clns router iso-igrp tag [level 2]
no clns router iso-igrp tag
Use the clns router iso-igrp interface configuration command to specify ISO-IGRP routing on a specified interface. Use the no form of this command with the appropriate tag to disable ISO-IGRP routing on the interface.
| tag | Meaningful name for routing process. It must be unique among all CLNS router processes for a given router. This tag should be the same as defined for the routing process in the router iso-igrp global configuration command. |
| level 2 | (Optional) Allows the interface to advertise Level 2 information. |
Use the clns routing global configuration command to enable routing of CLNS packets. Use the no form of this command to disable CLNS routing.
[no] clns security pass-through
Use the clns security pass-through global configuration command to allow the Cisco IOS software to pass packets that have security options set. To revert to the default, use the no form of this command.
Use the clns send-erpdu interface configuration command to allow CLNS to send an error PDU when the routing software detects an error in a data PDU. To disable this function, use the no form of this command. By default, this feature is enabled.
Use the clns send-rdpdu interface configuration command to allow CLNS to send redirect PDUs (RDPDUs) when a better route for a given host is known. To disable this function, use the no form of this command. By default, this feature is enabled.
Use the clns split-horizon interface configuration command to implement split horizon for ISO-IGRP updates. The no form of this command disables this feature. For LAN interfaces, this feature is enabled. For WAN interfaces on X.25, Frame Relay, or SMDS networks, this feature is disabled.
clns template-alias name template
no clns template-alias name
Use one or more clns template-alias global configuration commands to build a list of alphanumeric aliases of CLNS address templates for use in the definition of CLNS filter sets. The no form of this command deletes the alias.
| name | Alphanumeric name to apply as an alias for the template. |
| template | Address template. See this command in the Network Protocols Command Reference, Part 2 for more information. |
Use the clns want-erpdu global configuration command to specify whether to request error PDUs on packets sourced by the router. The no form of this command removes the parameter's settings.
Use the distance router configuration command to configure the administrative distance for CLNS routes learned. The no form of this command restores the administrative distance to the default.
| value | Administrative distance, indicating the trustworthiness of a routing information source. This argument has a numerical value between 0 and 255. A higher relative value indicates a lower trustworthiness rating. Preference is given to routes with smaller values. Defaults are: static routes--10; ISO-IGRP routes--100; IS-IS routes--110. The default, if unspecified, is 110. |
| clns | (Optional) CLNS-derived routes for IS-IS. |
[no] domain-password [password]
Use the domain-password router configuration command to configure the routing domain authentication password. The no form of this command disables the password.
| password | Password you assign |
Use the ignore-lsp-errors router configuration command to allow the router to ignore IS-IS link-state packets that are received with internal checksum errors rather than purging the link-state packets. Use the no form of this command to disable this function.
Use the ip domain-lookup nsap global configuration command to allow Domain Name System (DNS) queries for CLNS addresses. To disable this feature, specify the no form of this command. By default, this feature is enabled.
[no] isis adjacency-filter name [match-all]
Use the isis adjacency-filter interface configuration command to filter the establishment of IS-IS adjacencies. Use the no form of this command to disable filtering of the establishment of IS-IS adjacencies.
| name | Name of the filter set or expression to apply. |
| match-all | (Optional) All NSAP addresses must match the filter in order to accept the adjacency. If not specified (the default), only one address need match the filter in order for the adjacency to be accepted. |
isis circuit-type {level-1 | level-1-2 | level-2-only}
no isis circuit-type
Use the isis circuit-type interface configuration command to configure the type of adjacency desired for the specified interface. The no form of this command resets the circuit type to Level l and Level 2.
| level-1 | Level 1 adjacency is established if there is at least one area address in common between this system and its neighbors. |
| level-1-2 | Level 1 and 2 adjacency is established if the neighbor is also configured as level-1-2 and there is at least one area in common. If there is no area in common, a Level 2 adjacency is established. This is the default. |
| level-2-only | Level 2 adjacency is established on the circuit. If the neighboring router is a Level 1 only router, no adjacency is established. |
[no] isis csnp-interval seconds {level-1 | level-2}
Use the isis csnp-interval interface configuration command to configure the IS-IS complete sequence number PDUs (CSNP) interval for the specified interface. The no form of this command restores the default value.
| seconds | Interval of time in seconds between transmission of CSNPs on multiaccess networks. (Only applies for the designated router.) The default is 10 seconds. |
| level-1 | Interval of time between transmission of CSNPs for Level 1 independently. |
| level-2 | Interval of time between transmission of CSNPs for Level 2 independently. |
[no] isis hello-interval seconds {level-1 | level-2}
Use the isis hello-interval interface configuration command to specify the length of time in seconds between hello packets that the Cisco IOS software sends on the specified interface. The no form of this command restores the default value.
| seconds | Unsigned integer value. A value three times the hello interval seconds is advertised as the holdtime in the hello packets transmitted. It must be the same for all routers attached to a common network. With smaller hello intervals, topological changes are detected faster, but there is more routing traffic. The default is 10 seconds. |
| level-1 | Configure the hello interval for Level 1 independently. Use this on X.25, SMDS, and Frame Relay multiaccess networks. |
| level-2 | Configure the hello interval for Level 2 independently. Use with X.25, SMDS, and Frame Relay multiaccess networks. |
isis hello-multiplier multiplier [{level-1 | level-2}]
no isis hello-multiplier [{level-1 | level-2}]
Use the isis hello-multiplier interface configuration command to specify the hello packet multiplier used on the interface to determine the hold time transmitted in IS-IS hello packets. Use the no form of this command to disable this function.
| multiplier | Number from 3 to 1000. The seconds specified by the isis hello-interval command are multiplied by the number specified for the isis hello-multiplier command to determine the holding time transmitted in the IS-IS hello packet. If this command is not used, the default multiplier is 3. |
| level-1 | (Optional) Configure the multiplier for Level 1 independently. The default is Level 1. |
| level-2 | (Optional) Configure the multiplier for Level 2 independently. |
isis metric default-metric delay-metric expense-metric error-metric {level-1 | level-2}
no isis metric {level-1 | level-2}
Use the isis metric interface configuration command to configure the metric (or cost) for the specified interface. The no form of this command restores the default metric value.
| default-metric | Metric used for the redistributed route. The range is from 0 through 63. The default value is 10. |
| delay-metric | Not supported. |
| expense-metric | Not supported. |
| error-metric | Not supported. |
| level-1 | The router acts as a station router (Level 1) only. |
| level-2 | The router acts as an area router (Level 2) only. |
isis password password {level-1 | level-2}
no isis password {level-1 | level-2}
Use the isis password interface configuration command to configure the authentication password for a specified interface. The no form of this command disables authentication for IS-IS.
| password | Authentication password you assign for an interface. |
| level-1 | Configure the authentication password for Level 1 independently. For Level 1 routing, the router acts as a station router only. |
| level-2 | Configure the authentication password for Level 2 independently. For Level 2 routing, the router acts as an area router only. |
isis priority value {level-1 | level-2}
no isis priority {level-1 | level-2}
Use the isis priority interface configuration command to configure the priority of this system for designated router election. The no form of this command resets priority to 64.
| value | Priority of a router; a number from 0 through 127. The default is 64. |
| level-1 | Set priority of a router for Level 1 independently. |
| level-2 | Set priority of a router for Level 2 independently. |
[no] isis retransmit-interval seconds
Use the isis retransmit-interval interface configuration command to configure the number of seconds between retransmission of IS-IS link-state PDU retransmission for point-to-point links. The no form of this command restores the default value.
| seconds | Integer that should be greater than the expected round-trip delay between any two routers on the attached network. The setting of this parameter should be conservative, or needless retransmission will result. The value should be larger for serial lines and virtual links. The default is 5 seconds. |
[no] iso-igrp adjacency-filter name
Use the iso-igrp adjacency-filter interface configuration command to filter the establishment of ISO-IGRP adjacencies. Use the no form of this command to disable filtering of the establishment of ISO-IGRP adjacencies.
| name | Name of the filter set or expression to apply. |
[no] is-type {level-1 | level-1-2 | level-2-only}
Use the is-type router configuration command to configure the IS-IS level at which the Cisco IOS software is to operate. The no form of this command resets the parameter to the default.
| level-1 | Causes the router to act as a station router. |
| level-1-2 | Causes the router to act as both a station router and an area router. This is the default. |
| level-2-only | Causes the router to act as an area router only. |
Use the log-adjacency-changes router configuration command to cause IS-IS to generate a log message when an IS-IS adjacency changes state (up or down). Use the no form of this command to disable this function.
Use the lsp-mtu router configuration command to set the MTU size of IS-IS link-state packets. Use the no form of this command to disable this function.
| size | Maximum packet size in bytes. The size must be less than or equal to the smallest MTU of any link in the network. The default size is 1497 bytes. |
[no] match clns address name [name...name]
Use the match clns address route-map configuration command to define the address match criterion; routes that have a network address matching one or more of the names--and that satisfy all other defined match criteria--will be redistributed. Use the no form of this command to remove the match criterion.
| name | Name of a standard address list, filter set, or expression. |
[no] match clns next-hop name [name...name]
Use the match clns next-hop route-map configuration command to define the next-hop match criterion; routes that have a next-hop router address matching one of the names--and that satisfy all other defined match criteria--will be redistributed. Use the no form of this command to remove the match criterion.
| name | Name of an access list, filter set, or expression. |
[no] match clns route-source name [name..name]
Use the match clns route-source route-map configuration command to define the route-source match criterion; routes that have been advertised by routers at the address specified by the name--and that satisfy all other defined match criteria--will be redistributed. Use the no form of this command to remove the specified match criterion.
| name | Name of filter set or expression. |
[no] match interface type number [type number...type number]
Use the match interface route-map configuration command to define the interface match criterion; routes that have the next hop out one of the interfaces specified--and that satisfy all other defined match criteria--will be redistributed. Use the no form of this command to remove the specified match criterion.
| type | Interface type. |
| number | Interface number. |
[no] match metric metric-value
Use the match metric route-map configuration command to define the metric match criterion; routes that have the specified metric--and that satisfy all other defined match criteria--will be redistributed. Use the no form of this command to remove the specified match criterion.
| metric-value | Route metric. This can be an Interior Gateway Routing Protocol (IGRP) five-part metric. |
[no] match route-type {level-1 | level-2}
Use the match route-type route-map configuration command to define the route-type match criterion; routes that have the specified route type--and that satisfy all other defined match criteria--will be redistributed. Use the no form of the command to remove the specified match criterion.
| level-1 | IS-IS Level 1 routes. |
| level-2 | IS-IS Level 2 routes. |
metric weights qos k1 k2 k3 k4 k5
no metric weights
Use the metric weights router configuration command to specify different metrics for the ISO-IGRP routing protocol on CLNS. This command allows you to configure the metric constants used in the ISO-IGRP composite metric calculation of reliability and load. Use the no metric weights command to return the five k constants to their default values.
| qos | Quality of service (QOS) defines transmission quality and availability of service. The value must be 0, the default metric value. |
| k1, k2, k3, k4, k5 | Values that apply to ISO-IGRP for the default metric QOS. The k values are metric constants used in the ISO-IGRP equation that converts an IGRP metric vector into a scalar quantity. They are numbers from 0 through 127; higher numbers mean a greater multiplier effect. The defaults are k1 = 1; k2 = 0; k3 = 1; k4 = 0; k5 = 0. |
Use the net router configuration command to configure a Network Entity Title (NET) for the specified routing process. The no form of this command removes the specified NET.
| network-entity-title | Area addresses for the ISO-IGRP or IS-IS area. |
Use the ping user and privileged EXEC command to send ISO CLNS echo packets to test the reachability of a remote host over a connectionless OSI network.
| clns | CLNS protocol. |
| host | Host name of system to ping. |
| address | Address of system to ping. |
[no] redistribute protocol [tag] [route-map map-tag]
redistribute static [clns | ip]
Use the redistribute router configuration command to redistribute routing information from one domain into another routing domain. The no form of this command disables redistribution, or disables any of the specified keywords.
| protocol | Type of other routing protocol that is to be redistributed as a source of routes into the current routing protocol being configured. The keywords supported are iso-igrp, isis, and static. |
| tag | (Optional) Meaningful name for a routing process. |
| route-map map-tag | (Optional) A route map should be interrogated to filter the importation of routes from this source routing protocol to the current routing protocol. If not specified, all routes are redistributed. If this keyword is specified, but no route map tags are listed, no routes will be imported. The argument map-tag is the identifier of a configured route map. |
| static | The keyword static is used to redistribute static routes. When used without the optional keywords, this causes the Cisco IOS software to inject any OSI static routes into an OSI domain. |
| clns | (Optional) The clns keyword is used when redistributing OSI static routes into an IS-IS domain. The clns keyword is the default with the keyword static. |
| ip | (Optional) The ip keyword is used when redistributing IP into an IS-IS domain. |
[no] route-map map-tag [[permit | deny] | sequence-number]
Use the route-map global configuration command to define the conditions for redistributing routes from one routing protocol into another. Each route-map command has a list of match and set commands associated with it. The match commands specify the match criteria--the conditions under which redistribution is allowed for the current route-map. The set commands specify the set actions--the particular redistribution actions to perform if the criteria enforced by the match commands are met. The no form of this command deletes the route map.
| map-tag | Meaningful name for the route map. The redistribute command uses this name to reference this route map. Multiple route-maps can share the same map tag name. Can either be an expression or a filter set. |
| permit | If the match criteria are met for this route map, and permit is specified, the route is redistributed as controlled by the set actions. If the match criteria are not met, and permit is specified, the next route map with the same map-tag is tested. If a route passes none of the match criteria for the set of route maps sharing the same name, it is not redistributed by that set. |
| deny | If the match criteria are met for the route map, and deny is specified, the route is not redistributed, and no further route maps sharing the same map tag name will be examined. |
| sequence- number | Number that indicates the position a new route map is to have in the list of route maps already configured with the same name. If given with the no form of the command, it specifies the position of the route map that should be deleted. |
Use the router isis global configuration command to enable the IS-IS routing protocol on your router and to configure the IS-IS routing process. This command identifies the area the router will work in and lets the router know that it will be routing dynamically rather than statically. The no form of this command with the appropriate tag disables IS-IS routing for the system.
| tag | (Optional) Meaningful name for a routing process. If it is not specified, a null tag is assumed. The argument tag must be unique among all CLNS router processes for a given router. The tag argument is used later as a reference to this process. |
Use the router iso-igrp global configuration command to identify the area the router will work in and let it know that it will be routing dynamically using the ISO-IGRP protocol. The no form of this command with the appropriate tag disables ISO-IGRP routing for the system.
| tag | (Optional) Meaningful name for a routing process. For example, you could define a routing process named Finance for the Finance department, and another routing process named Marketing for the Marketing department. If not specified, a null tag is assumed. The tag argument must be unique among all CLNS router processes for a given router. |
[no] set level {level-1 | level-2 | level-1-2}
Use the set level route-map configuration command to specify the routing level of routes to be advertised into a specified area of the routing domain. Use the no form of this command to disable advertising the specified routing level into a specified area.
| level | Redistributed routes are advertised into this specified area of the routing domain. For IS-IS destinations, the default value is level-2. |
| level-1 | Inserted in IS-IS Level 1 link-state PDUs. |
| level-2 | Inserted in IS-IS Level 2 link-state PDUs. |
| level-1-2 | Inserted into both Level 1 and Level 2 IS-IS link-state PDUs. |
Use the set metric route-map configuration command to set the metric value to give the redistributed routes. Use the no form of this command to disable redistributing routes of a specific metric.
| metric-value | Route metric. This can be an IGRP five-part metric. |
[no] set metric-type {internal | external}
Use the set metric-type route-map configuration command to set the metric type to give redistributed routes. Use the no form of this command to disable redistributing routes of a specific metric type.
| internal | IS-IS internal metric. |
| external | IS-IS external metric. |
Use set tag route-map configuration command to set a tag value to associate with the redistributed routes. Use the no form of this command to disable redistributing routes with the specific tag.
| tag-value | Name for the tag. the tag value to associate with the redistributed route. If not specified, the default action is to forward the tag in the source routing protocol onto the new destination protocol. |
Use the show clns EXEC command to display information about the CLNS network.
Use the show clns cache EXEC command to display the CLNS routing cache. The cache contains an entry for each destination that has packet switching enabled. The output of this command includes entries showing each destination for which the router has switched a packet in the recent past. This includes the router.
show clns es-neighbors [type number] [detail]
Use the show clns es-neighbors EXEC command to list the ES neighbors that this router knows about.
| type | (Optional) Interface type. |
| number | (Optional) Interface number. |
| detail | (Optional) When specified, the areas associated with the end systems are displayed. Otherwise, a summary display is provided. |
show clns filter-expr [name] [detail]
Use the show clns filter-expr EXEC command to display one or all currently defined CLNS filter expressions.
| name | (Optional) Name of the filter expression to display. If none is specified, all are displayed. |
| detail | (Optional) When specified, expressions are evaluated down to their most primitive filter set terms before being displayed. |
Use the show clns filter-set EXEC command to display one or all currently defined CLNS filter sets.
| name | (Optional) Name of the filter set to display. If none is specified, all are displayed. |
show clns interface [type number]
Use the show clns interface EXEC command to list the CLNS-specific information about each interface.
| type | (Optional) Interface type. |
| number | (Optional) Interface number. |
show clns is-neighbors [type number] [detail]
Use the show clns is-neighbors EXEC command to display IS-IS related information for IS-IS router adjacencies. Neighbor entries are sorted according to the area in which they are located.
| type | (Optional) Interface type. |
| number | (Optional) Interface number. |
| detail | (Optional) When specified, the areas associated with the intermediate systems are displayed. Otherwise, a summary display is provided. |
show clns neighbors [type number] [detail]
The show clns neighbors EXEC command displays both end system (ES) and intermediate system (IS) neighbors.
| type | (Optional) Interface type. |
| number | (Optional) Interface number. |
| detail | (Optional) When specified, the area addresses advertised by the neighbor in the hello messages is displayed. Otherwise, a summary display is provided. |
show clns protocol [domain | area-tag]
Use the show clns protocol EXEC command to list the protocol-specific information for each ISO-IGRP routing process in the router. There will always be at least two routing processes, a Level 1 and a Level 2, and there can be more.
| domain | (Optional) A particular ISO-IGRP routing domain. |
| area-tag | (Optional) A particular IS-IS area. |
Use the show clns route EXEC command to display all of the destinations to which this router knows how to route packets. The show clns route command shows the IS-IS Level 2 routing table as well as static and ISO-IGRP learned prefix routes. This table stores IS-IS area addresses and prefix routes. Destinations are sorted by category.
| nsap | (Optional) CLNS Network Service Access Point address. |
Use the show clns traffic EXEC command to list the CLNS packets this router has seen.
show isis database [level-1] [level-2] [l1] [l2] [detail] [lspid]
Use the show isis database EXEC command to display the IS-IS link state database. A summary display is provided if no options are specified.
| level-1 | (Optional) Displays the IS-IS link state database for Level 1. |
| level-2 | (Optional) Displays the IS-IS link state database for Level 2. |
| l1 | (Optional) Abbreviation for the option level-1. |
| l2 | (Optional) Abbreviation for the option level-2. |
| detail | (Optional) When specified, the content of each link-state PDU is displayed. Otherwise, a summary display is provided. |
| lspid | (Optional) Link-state protocol ID. Displays the contents of the specified link-state packet. The link-state protocol ID must be in the form of xxxx.xxxx.xxxx.yy-zz or name.yy-zz. See this command in the Network Protocols Command Reference, Part 2 for a table of supported values. |
Use the show isis routes EXEC command to display the IS-IS Level 1 forwarding table for IS-IS learned routes.
Use the show isis spf-log EXEC command to display a history of the shortest path first (SPF) calculations for IS-IS.
Use the show route-map EXEC command to display all route-maps configured or only the one specified.
| map-name | (Optional) Name of a specific route-map. |
Use the show tarp EXEC command to display all global TARP parameters.
show tarp blacklisted-adjacencies
Use the show tarp blacklisted-adjacencies EXEC command to list all adjacencies that have been blacklisted (that is, adjacencies that this router will not propagate TARP PDUs to) by the tarp blacklist-adjacency command.
Use the show tarp hosts EXEC command to display information about a specific TARP router stored in the local TID cache.
| tid | Target identifier of the router from which you want information. Alphanumeric string up to 255 characters. |
show tarp interface [type number]
Use the show tarp interface EXEC command to list all interfaces that have TARP enabled.
| type | (Optional) Interface type. |
| number | (Optional) Interface number. |
Use the show tarp ldb EXEC command to display the contents of the loop-detection buffer table.
Use the show tarp map EXEC command to list all static entries in the TID cache that were configured with the tarp map command.
Use the show tarp static-adjacencies EXEC command to lists all static TARP adjacencies that are configured with the tarp route-static command.
Use the show tarp tid-cache EXEC command to display information about the entries in the TID cache. Entries are created dynamically, statically, or as a result of assigning a TID to the device by using the tarp tid command.
| detail | (Optional) List additional information in the TID/NET cache (such as the expiration time for dynamic entries). |
Use the show tarp traffic EXEC command to display statistics about TARP PDUs since the last time the counters were cleared.
Use the tarp allow-caching global configuration command to re-enable the storage of TID-to-NSAP address mapping in the TID cache. Use the no form of this command to disable this function and clear the TID cache. By default, this feature is enabled.
tarp arp-request-timer seconds
no tarp arp-request-timer
Use the tarp arp-request-timer global configuration command to set the timeout for TARP Type 5 PDUs. Use the no form of this command to set the timeout to the default value.
| seconds | Number of seconds that the router will wait for a response from a TARP type 5 PDU. The range is 0 to 3600 seconds. The default is 40 seconds. |
[no] tarp blacklist-adjacency nsap
Use the tarp blacklist-adjacency global configuration command to blacklist the specified router so that the router does not receive TARP PDUs propagated by this router. Use the no form of this command to remove the specified router from the blacklist so that the router can once again receive propagated TARP PDUs. By default all hosts receive propagated TARP PDUs.
| nsap | NSAP address that cannot receive TARP PDUs. Use the full NSAP address. |
tarp cache-timer seconds
no tarp cache-timer
Use the tarp cache-timer global configuration command to specify the length of time that a dynamically created TARP entry remains in the TID cache. Use the no form of this command to set the timer to the default value.
| seconds | Number of seconds an entry remains in the TID cache. The range is 30 to 86400 seconds. The default is 3600 seconds (one hour). |
Use the tarp enable interface configuration command to enable the TARP on an interface. Use the no form of this command to disable TARP on a particular interface.
Use the tarp global-propagate global configuration command to re-enable the capability to propagate TARP PDUs globally. Use the no form of this command to disable global propagation of TARP PDUs. By default, this feature is enabled
tarp ldb-timer seconds
no tarp ldb-timer
Use the tarp ldb-timer global configuration command to specify the length of time that a system ID-to-sequence number mapping entry remains in the loop-detection buffer table. Use the no form of this command to set the timer to the default value.
| seconds | Number of seconds that a system ID-to-sequence number mapping entry remains in the loop-detection buffer table. The range is 0 to 86400 seconds. The default is 300 seconds. |
tarp lifetime hops
no tarp lifetime
Use the tarp lifetime global configuration command to specify the lifetime for locally generated TARP PDUs based on the number of hops. Use the no form of this command to set the PDU lifetime to the default value.
| hops | Number of hosts that a PDU can traverse before it is discarded. Each router represents one hop. The range is 0 to 65535 hops. The default is 100 hops. |
Use the tarp map global configuration command to enter a TID-to-NSAP static route in the TID cache. Use the no form of this command to remove a static map entry from the TID cache.
| tid | Target identifier to be mapped to the specified NSAP. Alphanumeric string up to 255 characters. |
| nsap | NSAP address to map to the specified TID. Use the full NSAP address. |
tarp nselector-type hex-digit
no tarp nselector-type
Use the tarp nselector-type global configuration command to specify the N-selector to be used in CLNP PDUs to indicate that the packet is a TARP. Use the no form of this command to set the N-selector to the default value.
| hex-digit | Digit in hexadecimal format to be used to identify TARP PDUs. The default is AF. |
Use the tarp originate global configuration command to re-enable the router to originate TARP PDUs. Use the no form of this command to disable the capability to originate TARP PDUs. By default, this feature is enabled.
tarp post-t2-response-timer seconds
no tarp post-t2-response-timer
Use the tarp post-t2-response-timer global configuration command to specify the length of time that a router waits for a response to a Type 2 PDU after the default timer expires. Use the no form of this command to set the timer to the default value.
| seconds | Number of seconds that the router will wait for a response for a Type 2 PDU after the default timer has expired. The range is 0 to 3600 seconds. The default is 15 seconds. |
Use the tarp propagate interface configuration command to re-enable propagation of TARP PDUs on an interface. Use the no form of this command to disable propagation of TARP PDUs on a particular interface. By default, this feature is enabled.
tarp protocol-type hex-digit
no tarp protocol-type
Use the tarp protocol-type global configuration command to specify the network protocol type to be used in outgoing TARP PDUs. Use the no form of this command to set the protocol type to the default value.
| hex-digit | Digit in hexadecimal format to be used to identify the protocol used in outgoing TARP PDUs. The default is FE (for CLNP). |
Use the tarp query EXEC command to determine a TID corresponding to a specific NSAP address.
| nsap | NSAP address that you want the TID for. Use the full NSAP address. |
Use the tarp resolve EXEC command to determine an NSAP address corresponding to a specified TID.
| tid | Target identifier to be mapped to the specified NSAP. Alphanumeric string up to 255 characters. |
| 1 | (Optional) Send a Type 1 PDU. The default is a Type 1 PDU. If a response is not received before the timeout period, a Type 2 PDU is sent. |
| 2 | (Optional) Send only Type 2 PDU. |
Use the tarp route-static global configuration command to configure a static TARP adjacency. Use the no form of this command to remove a static TARP adjacency from the TARP queue.
| nsap | NSAP address to create a static TARP adjacency. Use the full NSAP address. |
Use the tarp run global configuration command to start the TARP process on the router. Use the no form of this command to stop the TARP process.
[no] tarp sequence-number number
Use the tarp sequence-number global configuration command to specify the sequence number to be used in the next outgoing TARP PDU. Use the no form of this command to return to the default value.
| number | Number from 0 to 65535 that will be used as the sequence number in the next outgoing PDU. The default is zero. |
tarp t1-response-timer seconds
no tarp t1-response-timer
Use the tarp t1-response-timer global configuration command to specify the length of time the router will wait for a response from a Type 1 PDU. Use the no form of this command to set the timer to the default value.
| seconds | Number of seconds that the router will wait to receive a response from a Type 1 PDU. The range is 0 to 3600 seconds. The default is 15 seconds. |
tarp t2-response-timer seconds
no tarp t2-response-timer
Use the tarp t2-response-timer global configuration command to specify the length of time the router will wait for a response from a Type 2 PDU. Use the no form of this command to set the timer to the default value.
| seconds | Number of seconds that the router will wait to receive a response from a Type 2 PDU. The range is 0 to 3600 seconds. The default is 25 seconds. |
Use the tarp tid global configuration command to assign a TID to the router. Use the no form of this command to remove the TID from the router.
| tid | Target identifier to be used by this router. Alphanumeric string up to 255 characters. |
Use the tarp urc global configuration command to set the update remote cache bit in all subsequent outgoing PDUs. Use the no form of this command to set the update remote cache bit to the default value.
| 0 | Set the update remote cache bit to 0, which is the default value. When the bit is zero, the receiver's PDU will update its TID cache entry. |
| 1 | Set the update remote cache bit to 1. When the bit is one, the receiver's TID cache is not updated. |
[no] timers basic update-interval holddown-interval invalid-interval
Use the timers basic router configuration command to configure ISO-IGRP timers. The no form of this command restores the default values.
| update-interval | Time, in seconds, between the sending of routing updates. The default value is 90 seconds. |
| holddown-interval | Time, in seconds, a system or area router is kept in holddown state, during which routing information regarding better paths is suppressed. (A router enters into a holddown state when an update packet is received that indicates the route is unreachable. The route is marked inaccessible and advertised as unreachable. However, the route is still used for forwarding packets.) When the holddown interval expires, routes advertised by other sources are accepted and the route is no longer inaccessible. The default value is 145 seconds. |
| invalid-interval | Time, in seconds, that a route remains in the routing table after it has been determined that it is not reachable. After that length of time, the route is removed from the routing table. The default value is 135 seconds. |
You can use the trace privileged EXEC command to trace routes on a router configured with the ISO CLNS protocol.
Use the trace clns user EXEC command to discover the CLNS routes the router's packets will actually take when traveling to their destination.
| destination | Destination address or host name on the command line. The default parameters for the appropriate protocol are assumed and the tracing action begins. |
which-route {nsap-address | clns-name}
Use the which-route EXEC command if you want to know which next-hop router will be used or if you have multiple processes running and want to troubleshoot your configuration. This command displays the routing table in which the specified CLNS destination is found.
| nsap-address | CLNS destination network address. |
| clns-name | Destination host name. |
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