Specifications

6-4
System Management Software Configuration Guide for Cisco IE 2000U and Connected Grid Switches
Chapter 6 Configuring SDM Templates
Guidelines and Limitations
Guidelines and Limitations
Follow these guidelines when selecting and configuring SDM templates:
• You must reload the switch for the configuration to take effect.
• If you are using the switch for Layer 2 features only, select the layer-2 template.
• Do not use the default template if you do not have routing enabled on your switch. The sdm prefer
default global configuration command prevents other features from using the memory allocated to
unicast routing in the routing template.
• You should use the default template when you plan to enable routing on the switch. If you do not
use the default template when routing is enabled, routing is done through software, which overloads
the CPU and severely degrades routing performance.
• If you try to configure IPv6 features without first selecting a dual IPv4 and IPv6 template, a warning
message is generated.
• Using the dual stack templates results in less TCAM capacity allowed for each resource, so do not
use if you plan to forward only IPv4 traffic.
• In the event that you are swapping your SD flash card from a failed unit to a replacement unit and
you are not using the default template, you need to re-configure the preferred SDM template and
then reload the switch for the selected template to take effect.
Note For details on how to replace (swap) the SD flash card, see the "Switch Installation" chapter within the
Cisco IE 2000U Switch Hardware Installation Guide.
Default Settings
The default template for a switch running either the IP services or LAN Base image is the default
template.
Configuring the Switch SDM Template
Follow this procedure to use the SDM template to select a template on a switch running the IP services
image.