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The 2T16S network processor module provides high-density serial interfaces for the Cisco 4000 series routers. This module has two high-speed interfaces that support full duplex T1 and E1 rates (up to 2 MB per second) and 16 low-speed interfaces. The 16 lower speed ports can be individually configured as either synchronous ports at speeds up to 128 kbps or as asynchronous ports at speeds up to 115 kbps.
For the slow-speed interfaces, both synchronous and asynchronous serial protocols are supported. For for the high-speed interfaces, only the synchronous protocols are supported. Synchronous protocols include IBM's BSC, SDLC, and HDLC. Asynchronous protocols include PPP, SLIP, and ARAP for dial-up connections using external modems.
This feature is supported on these platforms:
You must have at least one 2T16S network processor module installed in a Cisco 4500 or Cisco 4700 router. A maximum of two modules can be installed in one router.
There is no new configuration information for this feature. Use the configuration tasks provided in the Cisco IOS Release 11.2 documentation set.
This section provides a sample configuration for the Cisco 4500 or Cisco 4700 routers. This example shows a router equipped with two 2T16S serial network processor modules and two conventional Ethernet ports.
This router is configured for WAN aggregation using X.25, Frame Relay, PPP, and HDLC encapsulation. Serial interfaces 0, 1, 18, and 19 are the synchronous high-speed interfaces. Serial interfaces 2 through 17 and 20 through 35 are the synchronous/asynchronous low-speed interfaces.
version 11.2 ! hostname c4X00 ! username brad password 7 13171F1D0A080139 username jim password 7 104D000A0618 !
Ethernet interfaces and their subinterfaces are configured for LAN access.
interface Ethernet0 ip address 10.1.1.1 255.255.255.0 media-type 10BaseT ! interface Ethernet1 ip address 10.1.2.1 255.255.255.0 media-type 10BaseT !
Interfaces Serial 0 and Serial 1 are the high-speed serial interfaces on the first 2T16S module. In this example, subinterfaces are also configured for remote offices connected in to interface Serial 0.
interface Serial0 description Frame relay configuration sample no ip address encapsulation frame-relay ! interface Serial0.1 point-to-point description PVC to first office ip address 10.1.3.1 255.255.255.0 frame-relay interface-dlci 16 ! interface Serial0.2 point-to-point description PVC to second office ip address 10.1.4.1 255.255.255.0 frame-relay interface-dlci 17 ! interface Serial1 description X25 configuration sample ip address 10.1.5.1 255.255.255.0 no ip mroute-cache encapsulation x25 x25 address 6120184321 x25 htc 25 x25 map ip 10.1.5.2 6121230073
Serial interfaces 2 to 17 are the low-speed interfaces on the 2T16S network processor module. In this example, remote routers are connected to various configurations.
interface Serial2 description DDR connection router dial out to remote sites only ip address 10.1.6.1 255.255.255.0 dialer in-band dialer wait-for-carrier-time 60 dialer string 0118527351234 pulse-time 1 dialer-group 1 ! interface Serial3 description DDR interface to answer calls from remote office ip address 10.1.7.1 255.255.255.0 dialer in-band ! interface Serial4 description configuration for PPP interface ip address 10.1.8.1 255.255.255.0 encapsulation ppp ! interface Serial5 description Frame relay configuration sample no ip address encapsulation frame-relay ! interface Serial5.1 point-to-point description PVC to first office ip address 10.1.9.1 255.255.255.0 frame-relay interface-dlci 16 ! interface Serial5.2 point-to-point description PVC to second office ip address 10.1.10.1 255.255.255.0 frame-relay interface-dlci 17 ! interface Serial6 description configuration for PPP interface ip address 10.1.11.1 255.255.255.0 encapsulation ppp ! interface Serial7 no ip address shutdown ! interface Serial8 ip address 10.1.12.1 255.255.255.0 encapsulation ppp async default routing async mode dedicated ! interface Serial9 physical-layer async ip address 10.1.13.1 255.255.255.0 encapsulation ppp async default routing async mode dedicated ! interface Serial10 physical-layer async no ip address ! interface Serial11 no ip address shutdown ! interface Serial12 physical-layer async no ip address shutdown ! interface Serial13 no ip address shutdown ! interface Serial14 no ip address shutdown ! interface Serial15 no ip address shutdown ! interface Serial16 no ip address shutdown ! interface Serial17 no ip address shutdown
Interface serial 18 is the first high-speed serial interface of the second 2T16S module. Remote sites on different subnets are dialing in to this interface with point-to-point and multipoint connections.
interface Serial18 description Frame relay sample no ip address encapsulation frame-relay ! interface Serial18.1 point-to-point description Frame relay subinterface ip address 10.1.14.1 255.255.255.0 frame-relay interface-dlci 16 ! interface Serial18.2 point-to-point description Frame relay subinterface ip address 10.1.15.1 255.255.255.0 frame-relay interface-dlci 17 ! interface Serial18.3 point-to-point description Frame relay subinterface ip address 10.1.16.1 255.255.255.0 frame-relay interface-dlci 18 ! interface Serial18.5 multipoint ip address 10.1.17.1 255.255.255.0 frame-relay map ip 10.1.17.2 100 IETF
This second high-speed serial interface is configured to connect a X.25 link. Serial interfaces 20 through 35 are the low-speed interfaces. However, some of the interfaces are not displayed in this example.
interface Serial19 description X25 sample config ip address 10.1.18.1 255.255.255.0 no ip mroute-cache encapsulation x25 x25 address 6120000044 x25 htc 25 x25 map ip 10.1.18.2 6120170073 ! interface Serial20 ip address 10.1.19.1 255.255.255.0 ! interface Serial21 physical-layer async ip unnumbered e0 encap ppp async mode dedicated async dynamic routing ipx network 45 ipx watchdog-spoof dialer in-band dialer-group 1 ppp authentication chap ! interface Serial22 no ip address shutdown ! interface Serial23 no ip address shutdown ! interface Serial24 no ip address shutdown ! !Serial interfaces 23 through 35 would appear here. !... router eigrp 10 network 10.0.0.0 ! ! dialer-list 1 protocol ip permit ! line con 0 exec-timeout 15 0 password david login
The following basic line configuration configures some of the modules' low-speed serial interfaces.
line 8 10 modem InOut transport input all rxspeed 64000 txspeed 64000 flowcontrol hardware line 12 transport input all rxspeed 64000 txspeed 64000 flowcontrol hardware modem chat-script generic line 21 transport input all rxspeed 64000 txspeed 64000 flowcontrol hardware ! end
There is no new command reference documentation provided by Release 11.2(3)P for this feature. Refer to the Cisco IOS Release 11.2 documentation set for more information about configuring Cisco 4000 series routers.
For additional software configuration information for the Cisco 4000 series, refer to the following documents:
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