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This chapter provides a brief description of the Route Switch Module (RSM) and is divided into the following sections:
For detailed RSM installation and configuration information, see the Catalyst 5000 Series Switch Route Switch Module Installation and Configuration Note, which is available on the Cisco Connection Documentation, Enterprise Series CD, or in print.
The RSM is a router module running normal Cisco IOS router software that plugs directly into the Catalyst 5000 series switch backplane, providing multiprotocol routing for the Catalyst 5000 series Ethernet interfaces.
From the perspective of the Catalyst 5000 series switches, the RSM appears as a module with a single trunked port and one Media Access Control (MAC) address. From the perspective of the user, the RSM has one port. This port is unlike other Catalyst 5000 series module ports in that it has no external attributes, such as media type or speed.
Figure 7-1 shows the RSM front panel.
The RSM front panel features are described in the following sections. The RSM LEDs are described in the section "RSM LEDs."
The Flash memory (PCMCIA) card slots are for additional system PCMCIA-based Flash memory. You can use this Flash memory to store and run Cisco IOS images, or as a file server for other routers to access as clients.
The reset button causes a non-maskable interrupt (NMI) and places the RSM in ROM monitor mode. (Use the Catalyst 5000 series switch reset command to reset the RSM hardware.)
The auxiliary port is typically used to connect to a modem for remote access to the RSM. The console port can be used to connect a terminal to the RSM for configuration and monitoring.
The RSM requires Catalyst 5000 series supervisor engine module software release 2.3(1) or greater and Cisco IOS software release 11.2(7)P or greater.
The RSM LEDs, shown in Figure 7-2, are described in the following sections.
When the RSM is powered up, the switch runs a series of diagnostic tests. The STATUS LED shows the test results as described in .
| Color | Status |
|---|---|
| Green | All tests passed; module is operational. |
| Orange | Indicates one of three states:
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Red | Indicates one of two states:
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The CPU HALT and ENABLED LEDs indicate RSM status. The ENABLED LED is on when the IP microcode is loaded and the RSM is operational. During normal operation, the CPU HALT LED is on. The CPU HALT LED goes off if the system detects a processor hardware failure.
The PCMCIA SLOT 1 and SLOT 0 LEDs light when their respective slot 1 and slot 0 PCMCIA devices are accessed by the RSM. See the "Using Flash Memory (PCMCIA) Cards" section of the Catalyst 5000 Series Switch Route Switch Module Installation and Configuration Note for detailed information.
The RSM has two channels that transfer packet data between the Catalyst 5000 series switch backplane and the network VLANs. The CHANNEL 0 and CHANNEL 1 transmit (TX) and receive (RX) LEDs indicate transmit and receive activity for each channel. Each channel is associated with a single SAGE ASIC. A VLAN can be mapped to a specific channel to balance the load of each channel.
The RSM provides multiprotocol routing for the Catalyst switch Ethernet interfaces. Table 7-2 lists the Cisco IOS features available for Release 1 of the RSM.
| Item | Feature |
|---|---|
| LAN support (routed protocols) | IP, IPX/SPX, and Appletalk |
| IP | |
| Routing protocols | Routing Information Protocol (RIP) Hot Standby Router Protocol (HSRP) Address Resolution Protocol (ARP) services Reverse Address Resolution Protocol (RARP) Bootstrap Protocol (BootP) Interior Gateway Routing Protocol (IGRP) Enhanced Interior Gateway Routing Protocol (EIGRP) Open Shortest Path First (OSPF) |
| Routing features | Static routing Route filtering Netflow Random early discard (RED) IP helper addressing User Datagram Protocol (UDP) broadcasts IP broadcasts Access lists UDP flooding Passive interfaces IP multicast support: Internet Group Management Protocol (IGMP) Protocol Independent Multicast (PIM) Cisco Group Management Protocol (CGMP) |
| IP control and management services | Internet Control Message Protocol (ICMP) services Domain Naming System (DNS) Services IP Path Maximum Transmission Unit (MTU) Discovery Cisco Discovery Protocol (CDP) |
| Files transfers | Trivial File Transfer Protocol (TFTP) |
| IPX/SPX | |
| Routing protocols | RIP Service Advertisement Protocol (SAP) filters Netware Link Services Protocol (NLSP) |
| Routing features | Get Nearest Server (GNS) Novell-compliant IPX ping Novell helper addressing Novell output SAP delays Filters (RIP, SAP) |
| Encapsulation techniques | 802.3 (Novell-ether) 802.2 (ISO 1) Ethernet II (arpa) Ethernet-snap (LLC/SNAP) Multiple Novell encapsulations on each VLAN |
| Appletalk (Phase 1 and 2) | |
| Routing protocols | AppleTalk ARP Datagram Delivery Protocol (DDP) Routing Table Maintenance Protocol (RTMP) Name Binding Protocol (NBP) Zone Information Protocol (ZIP) AppleTalk Echo Protocol (AEP) AppleTalk Transaction Protocol (ATP) AppleTalk Simple Multicast Routing Protocol (SMRP) |
| Routing features | Packet filters Route filters MacIP address assignment Dynamic interface configuration Variable RTMP update timers Variable AARP timers Variable AARP cache timeout timers Variable ZIP query intervals GetZoneList (GZL) filters Appletalk ZIP reply filters AppleTalk Update-Based Routing Protocol (AURP) |
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