Cisco Catalyst X4232 Installation And Configuration Note page 34

Overview of the Catalyst 4003 and 4006 Layer 3 Services Module Interfaces
Cisco IOS Routing Protocols
Layer 3-switching software provides a comprehensive suite of routing protocols based on Cisco IOS
software. The following networking protocols and routing protocols are supported on the Catalyst 4000
Layer 3 Services module.
Table 10
Networking Protocol
IP
IPX
Many of the Cisco IOS routing protocol features, such as route redistribution and load balancing over
equal cost paths (for OSPF and EIGRP), are supported. The methods used to configure these routing
protocols is identical to the configuration methods currently employed on all Cisco routers.
Layer 2 entries, IP routing, IP multicast routing, and Novell IPX routing share the 32K CAM on the
Note
Catalyst 4000 Layer 3 Services module.
You will be unable to use IPX routing when you enable per-port shaping and policing on any port
Caution
of a Catalyst 4003 or 4006 Layer 3 Services module.
QoS-Based Forwarding
QoS includes technologies such as weighted round-robin scheduling, policing, and shaping, which help
control bandwidth, network delay, jitter, and packet loss in congested networks. The QoS identifier
provides specific treatment to traffic in different classes, so that each class receives different QoS.
The class to which the packets belong determines packet scheduling and discarding policies. For
example, the overall service given to packets in the premium class will be better than that given to the
standard class; the premium class is expected to experience lower loss rate or delay.
The switch router has QoS-based forwarding for IP traffic only. The implementation of QoS forwarding
is based on local administrative policy and IP precedence. The mapping between the IP precedence field
and the QoS field determines the delay priority of the packet.
For more information about QoS, see the "Configuring Layer 3 QoS" section on page 67
You will be unable to use IPX routing when you enable per-port shaping and policing on any port
Caution
of a Catalyst 4003 or 4006 Layer 3 Services module.
Network Class Redundancy
The redundancy of Cisco IOS software provides key network features, such as HSRP, routing protocol
convergence with RIP, OSPF, EIGRP, EtherChannel, and load sharing across equal cost Layer 3 paths
and spanning trees (for Layer 2-based networks).
Installation and Configuration Note for the Catalyst 4000 Layer 3 Services Module
34
Supported Networking and Routing Protocols
Supported Routing Protocols
RIP, RIP-2, OSPF, IGRP, EIGRP, PIM,
BGP
IPX RIP, EIGRP
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