Cisco Catalyst 3560-X Series, Software Configuration Manual

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Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-25303-03
Chapter 1 Configuring SDM Templates
Configuring the Switch SDM Template
Configuring the Switch SDM Template
These sections contain this configuration information:
•
Default SDM Template, page 1-5
• SDM Template Configuration Guidelines, page 1-5
•
Setting the SDM Template, page 1-6
Default SDM Template
The default template is the default Switch Database Management (SDM) desktop template.
SDM Template Configuration Guidelines
•
When you configure a new SDM template, you must reload the switch for the configuration to take
effect.
• On switches running the IP Base or IP Services feature set, use the sdm prefer vlan global
configuration command only on switches intended for Layer 2 switching with no routing.
When you use the VLAN template, no system resources are reserved for routing entries, and any
routing is done through software. This overloads the CPU and severely degrades routing
performance.
• Do not select a routing template ( sdm prefer routing , sdm prefer dual-ipv4-and-ipv6 routing, or
indirect-ipv4-and-ipv6-routing ) when the switch is running the LAN Base feature set. Although
visible in the command-line help, the LAN Base feature set does not support the routing templates.
On switches running the LAN Base feature set, none of the routing values shown for the templates
are valid.
•
Beginning with Cisco IOS Release 12.2(58)SE, the LAN Base feature set supports configuration of
16 static IPv4 routes on SVIs. Use the default template when configuring static routing on switches
running the LAN Base feature set.
• On switches running the LAN Base feature set, the number of supported VLANs displayed in the
templates is incorrect. The LAN Base feature set supports only 255 VLANs.
•
Do not use the routing template if you do not have routing enabled on your switch. To prevent other
features from using the memory allocated to unicast routing in the routing template, use the
sdm
prefer routing global configuration command.
• If you try to configure IPv6 without first selecting a dual IPv4 and IPv6 template, a warning message
appears.
•
Using the dual stack template results in less hardware capacity allowed for each resource, so do not
use it if you plan to forward only IPv4 traffic.
• Use the indirect-ipv4-and-ipv6-routing template to provide more space for IPv4 and IPv6 summary
or indirect routes by providing less space for IPv4 policy-based routing entries and IPv6 ACL, QoS,
and policy-based routes.