Using The Templates - Cisco Catalyst 3550 series Software Configuration Manual

Chapter 7 Administering the Switch
Table 7-6 Approximate Resources Allowed in Each Template for Fast Ethernet Switches (continued)
Resource
QoS classification ACEs
Security ACEs
Unicast routes
Multicast routes
Subnet VLANs (routed ports and SVIs)
Layer 2 VLANs
1. When the extended-match keyword is used with the listed template. This keyword affects only the number of unicast routes allowed.

Using the Templates

Follow these guidelines when using the SDM templates:
•
•
•
•
This procedure shows how to change the SDM template from the default. The switch must reload before
the configuration takes effect. If you use the show sdm prefer privileged EXEC command before the
switch reloads, the previous configuration (in this case, the default) appears.
78-11194-09
Default Template
1 K
1 K
8 K or 4 K
1 K
8
1 K
The maximum number of resources allowed in each template is an approximation and depends upon
the actual number of other features configured. For example, in the default template for the
Catalyst 3550-12T, if your switch has more than 16 routed interfaces configured, the number of
multicast or unicast routes that can be accommodated by hardware might be fewer than shown.
Using the sdm prefer vlan global configuration command disables routing capability in the switch.
Any routing configurations are rejected after the reload, and previously configured routing options
might be lost. Use the sdm prefer vlan global configuration command only on switches intended
for Layer 2 switching with no routing.
Do not use the routing template if you are not enabling routing on your switch. Entering the sdm
prefer routing global configuration command on a switch does not enable routing, but it would
prevent other features from using the memory allocated to unicast and multicast routing in the
routing template, which could be up to 30 K in Gigabit Ethernet switches and 17 K in Fast Ethernet
switches.
You must use the extended-match keyword to support 144-bit Layer 3 TCAM when WCCP or
multi-VRF CE is enabled on the switch. This keyword is not supported on the VLAN template.
Optimizing System Resources for User-Selected Features
Access Template
1K
2 K
1 1
2 K or 1 K
2 K
8
1 K
Catalyst 3550 Multilayer Switch Software Configuration Guide
Routing Template VLAN Template
512 1 K
512 1 K
1
16 K or 8 K 0
1 K 0
8 8
1 K 1 K
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