Installation guide

Release Notes for Cisco IOS Release 12.0(10)W5(18c) Feature Packs for the Cisco Catalyst 8500 CSR

78-10598-02

Restrictions

To Boot From a Flash PC Card

The Catalyst 8500 CSR boots from its onboard Flash memory by default. To change this default to boot

from a Flash PC Card instead, you must change the configuration register setting to 0x2102. Detailed

instructions can be found in the Layer 3 Switching Software Feature and Configuration Guide.

Restrictions

This section describes the following Catalyst 8500 CSR restrictions:

• Catalyst 8540 ACL Daughter Card Restrictions

• AppleTalk Restrictions

• VLAN Encapsulation Restrictions

• EtherChannel Restrictions

• Maximum Path Restriction for EIGRP or OSPF

• Port Snooping Restrictions

• Eight-Port Gigabit Ethernet — Ports Per Bridge Group Restriction

• Eight-Port Gigabit Ethernet — Port Channel Restrictions

• Restrictions on the Online Insertion and Removal of Modules

• FPGA Upgrade Restriction

• 1000BaseZX GBIC Restriction

Catalyst 8540 ACL Daughter Card Restrictions

The eight-port Gigabit Ethernet interface does not support an ACL daughter card.

The Catalyst 8510 CSR does not support an ACL daughter card.

UDP flooding is disabled on routers with an ACL daughter card.

The following ACLs are not supported with the ACL daughter card:

• ACL for GEC, FEC, or BVI

• Dynamic ACL

• Reflexive ACL

• IPX extended ACL

• ACL logging

AppleTalk Restrictions

We recommend that you evaluate the level of CPU utilization and performance in your switch router

before turning on AppleTalk, particularly in a Catalyst 8510 CSR. Unlike IP and IPX, AppleTalk

routing and processing in the Catalyst 8500 CSR is accomplished by the switch processor, not the

interface module. This means that routing AppleTalk packets consumes more processing time than