Configuring SDM Templates

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Information About Configuring SDM Templates

Understanding the SDM Templates

You can use SDM templates to configure system resources in the switch to optimize support for specific features, depending on how the switch is used in the network. You can select a template to provide maximum system usage for some functions or use the default template to balance resources.

To allocate ternary content addressable memory (TCAM) resources for different usages, the switch SDM templates prioritize system resources to optimize support for certain features.

Configuring the Switch SDM Template

Default SDM Template

The default template is the default Switch Database Management (SDM) desktop template.

SDM Template Configuration Guidelines

  • When you select and configure SDM templates, you must reload the switch for the configuration to take effect.

  • If you try to configure IPv6 features without first selecting a dual IPv4 and IPv6 template, a warning message appears.

  • Using the dual stack templates results in less TCAM capacity allowed for each resource, so do not use it if you plan to forward only IPv4 traffic.

Setting the SDM Template

Follow these steps to use the SDM template to maximize feature usage:

SUMMARY STEPS

  1. enable
  2. configure terminal
  3. end
  4. reload

DETAILED STEPS

  Command or Action Purpose
Step 1

enable

Example:

Switch> enable

Enables privileged EXEC mode.

  • Enter your password if prompted.

Step 2

configure terminal

Example:

Switch# configure terminal

Enters global configuration mode.

Step 3

end

Example:

Switch(config)# end

Returns to privileged EXEC mode.

Step 4

reload

Example:

Switch# reload

Reloads the operating system.

Displaying the SDM Templates

Use the show sdm prefer privileged EXEC command with no parameters to display the active template.

To display the resource numbers supported by the specified template, use the show sdm prefer [access | default | dual-ipv4-and-ipv6 {default | vlan} | indirect-ipv4-and-ipv6-routing | routing | vlan] privileged EXEC command.


Note

On Switch running the LAN Base feature set, routing values shown in all templates are not valid.

Configuration Examples for SDM Templates

Examples: Configuring SDM Templates

Examples: Displaying SDM Templates

This is an example output showing the advanced template information: 


Switch# show sdm prefer 

Showing SDM Template Info

This is the Advanced template.
  Number of VLANs:                                 4094
  Unicast MAC addresses:                           32768
  Overflow Unicast MAC addresses:                  512
  IGMP and Multicast groups:                       8192
  Overflow IGMP and Multicast groups:              512
  Directly connected routes:                       32768
  Indirect routes:                                 8192
  Security Access Control Entries:                 3072
  QoS Access Control Entries:                      2816
  Policy Based Routing ACEs:                       1024
  Netflow ACEs:                                    1024
  Input Microflow policer ACEs:                    256
  Output Microflow policer ACEs:                   256
  Flow SPAN ACEs:                                  256
  Tunnels:                                         256
  Control Plane Entries:                           512
  Input Netflow flows:                             8192
  Output Netflow flows:                            16384
These numbers are typical for L2 and IPv4 features.
Some features such as IPv6, use up double the entry size;
so only half as many entries can be created.


Switch#

This is an example output showing the VLAN template information: 

 
Switch# show sdm prefer vlan

Showing SDM Template Info

This is the VLAN template for a typical Layer 2 network.
  Number of VLANs:                                 4094
  Unicast MAC addresses:                           32768
  Overflow Unicast MAC addresses:                  512
  IGMP and Multicast groups:                       8192
  Overflow IGMP and Multicast groups:              512
  Directly connected routes:                       32768
  Indirect routes:                                 8192
  Security Access Control Entries:                 3072
  QoS Access Control Entries:                      3072
  Policy Based Routing ACEs:                       0
  Netflow ACEs:                                    1024
  Input Microflow policer ACEs:                    0
  Output Microflow policer ACEs:                   0
  Flow SPAN ACEs:                                  256
  Tunnels:                                         0
  Control Plane Entries:                           512
  Input Netflow flows:                             16384
  Output Netflow flows:                            8192
These numbers are typical for L2 and IPv4 features.
Some features such as IPv6, use up double the entry size;
so only half as many entries can be created.

Switch#

Additional References for SDM Templates

Related Documents

Related Topic Document Title
Command Reference

Standards and RFCs

Standard/RFC Title
None

—

MIBs

MIB MIBs Link
All the supported MIBs for this release.

To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use Cisco MIB Locator found at the following URL:

http://www.cisco.com/go/mibs

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