Consolidated Platform Configuration Guide, Cisco IOS XE 15.2(2)E (Catalyst 2960-XR Switch)

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Book Title

Consolidated Platform Configuration Guide, Cisco IOS XE 15.2(2)E (Catalyst 2960-XR Switch)

Chapter Title

Configuring SDM Templates

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Updated:
July 23, 2014

Chapter: Configuring SDM Templates

Configuring SDM Templates

Finding Feature Information

Your software release may not support all the features documented in this module. For the latest caveats and feature information, see Bug Search Tool and the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the feature information table at the end of this module.

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Information About Configuring SDM Templates

Restrictions for SDM Templates

The following are restrictions when using SDM templates:

The switch supports homogeneous stacking, but does not support mixed stacking.

  • The default template is the only template supported on switches running the LAN Base image.

SDM Templates

You can use Switch Database Management (SDM) templates to configure system resources to optimize support for specific features, depending on how your device is used in the network. You can select a template to provide maximum system usage for some functions: for example, use the default template to balance resources, and use the access template to obtain maximum ACL usage. The switch SDM templates allocate system hardware resources for different uses.

You can select SDM templates for IP Version 4 (IPv4) to optimize these features on switches running the IP Lite feature set:


Note

When the switch is running the LAN Base feature set, you must use the default template.

  • IPv4—The IPv4 template provides maximum support for IPv4. No IPv6 support is available on this template.

  • VLAN—The VLAN template provides Layer 2 functionality and the maximum number of unicast MAC addresses.

  • Default—The default template gives balance to all functions providing support for Layer 2, IPv4 and IPv6 functionality.


Note

Use the default template when configuring IPv4 static routing on SVIs on switches running the LAN Base feature set. You can configure up to 16 static routes.

For information about homogeneous stacks, see the Catalyst 2960-XR Switch Stacking Configuration Guide.

After you change the template and the system reboots, you can use the show sdm prefer privileged EXEC command to verify the new template configuration. If you enter the show sdm prefer command before you enter the reload privileged EXEC command, the show sdm prefer command shows the template currently in use and the template that becomes active after a reload.

Related Tasks
Setting the SDM Template
Related References
Examples: Displaying SDM Templates

SDM Template Resources

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

To allocate ternary content addressable memory (TCAM) resources for different usages, the switch SDM templates prioritize system resources to optimize support for certain features. These templates are supported on your device:

Table 1 Approximate Number of Feature Resources Allowed by Templates

Resource

Default

IPv4

VLAN

Unicast MAC addresses

16 K

16 K

32 K

Active VLANs/VLAN IDs

1K/4096

1K/4096

1K/4096

IPv4 IGMP groups

1 K

1 K

1 K

IPv4 unicast routes

5.25 K

24 K

0.5 K

  • Directly connected hosts

4 K

16 K

0.25 K

  • Indirect routes

1.25 K

8 K

0.25 K

IPv4 policy-based routing ACEs

0.5 K

0.375 k

0.5 K

IPv6 multicast groups:

1 K

0

1 K

  • Directly connected IPv6 addresses

4 K

0

0.25 K

  • Indirect IPv6 unicast routes

1.25 K

0

0.25 K

IPv4 MAC QoS ACEs

0.5 K

0.5 K

0.5 K

IPv4 MAC security ACEs

1 K

0.875 k

1 K

IPv6 policy-based routing ACEs

0.25 K

0

0

IPv6 QoS ACEs

0.25 K

0

0.5 K

IPv6 security ACEs

0.5 K

60

0.5 K
Related Tasks
Setting the SDM Template
Related References
Examples: Configuring SDM Templates

SDM Templates and Switch Stacks

All stack members use the same SDM template that is stored on the stack master. When a new switch is added to a stack, as with the switch configuration and VLAN database files, the SDM configuration that is stored on the stack master overrides the template configured on an individual switch.

Version-mismatch (VM) mode has priority over SDM-mismatch mode. If a VM mode condition and an SDM-mismatch mode exist, the switch stack first attempts to resolve the VM-mode condition. You can use the show switch privileged EXEC command to see if any stack members are in SDM-mismatch mode.

Related Tasks
Setting the SDM Template

How to Configure SDM Templates

Setting the SDM Template

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

SUMMARY STEPS

    1.    enable

    2.    configure terminal

    3.    sdm prefer { default | ipv4 | vlan }

    4.    end

    5.    reload


DETAILED STEPS
     Command or ActionPurpose
    Step 1 enable


    Example: 
    Switch> enable
     

    Enables privileged EXEC mode. Enter your password if prompted.

     

    Step 2configure terminal


    Example: 
    
Switch# configure terminal
     

    Enters the global configuration mode.

     
    Step 3 sdm prefer { default | ipv4 | vlan }


    Example: 
    Switch(config)# sdm prefer default
     

    Specifies the SDM template to be used on the switch. The keywords have these meanings:

    • default —The default template provides balance for all Layer 2, IPv4 and IPv6 functionality.

    • IPv4 —The IPv4 template provides maximum support for IPv4. No IPv6 support is available on this template.

    • VLAN —The VLAN template provides Layer 2 functionality and the maximum number of unicast MAC addresses.

    Use the no sdm prefer command to set the switch to the default template. The default template balances the use of system resources.

     
    Step 4end


    Example: 
    
Switch(config)# end
     

    Returns to privileged EXEC mode.

     
    Step 5reload


    Example: 
    Switch# reload
     

    Reloads the operating system.

     
    Related Concepts
    SDM Templates
    SDM Template Resources
    SDM Templates and Switch Stacks
    Related References
    Examples: Displaying SDM Templates
    Examples: Configuring SDM Templates

    Configuration Examples for SDM Templates

    Examples: Displaying SDM Templates

    This is an example output showing the default template information:

    Switch# show sdm prefer default 
 
"default" template:
 The selected template optimizes the resources in
 the switch to support this level of features for
 8 routed interfaces and 1024 VLANs.

  number of unicast mac addresses:                  16K
  number of IPv4 IGMP groups + multicast routes:    1K
  number of IPv4 unicast routes:                    5.25K
    number of directly-connected IPv4 hosts:        4K
    number of indirect IPv4 routes:                 1.25K
  number of IPv6 multicast groups:                  1K
  number of directly-connected IPv6 addresses:      4K
  number of indirect IPv6 unicast routes:           1.25K
  number of IPv4 policy based routing aces:         0.5K
  number of IPv4/MAC qos aces:                      0.5K
  number of IPv4/MAC security aces:                 1K
  number of IPv6 policy based routing aces:         0.25K
  number of IPv6 qos aces:                          0.25K
  number of IPv6 security aces:                     0.5K


Switch#

    This is an example output showing the IPv4 template information:

    Switch# show sdm prefer ipv4 

 "ipv4" template:
 The selected template optimizes the resources in
 the switch to support this level of features for
 8 routed interfaces and 1024 VLANs.

  number of unicast mac addresses:                  16K
  number of IPv4 IGMP groups + multicast routes:    1K
  number of IPv4 unicast routes:                    24K
    number of directly-connected IPv4 hosts:        16K
    number of indirect IPv4 routes:                 8K
  number of IPv6 multicast groups:                  0
  number of directly-connected IPv6 addresses:      0
  number of indirect IPv6 unicast routes:           0
  number of IPv4 policy based routing aces:         0.375k
  number of IPv4/MAC qos aces:                      0.5K
  number of IPv4/MAC security aces:                 0.875k
  number of IPv6 policy based routing aces:         0
  number of IPv6 qos aces:                          0
  number of IPv6 security aces:                     60

    This is an example output showing the VLAN template information:

    Switch# show sdm prefer vlan 

 "vlan" template:
 The selected template optimizes the resources in
 the switch to support this level of features for
 8 routed interfaces and 1024 VLANs.

  number of unicast mac addresses:                  32K
  number of IPv4 IGMP groups + multicast routes:    1K
  number of IPv4 unicast routes:                    0.5K
    number of directly-connected IPv4 hosts:        0.25K
    number of indirect IPv4 routes:                 0.25K
  number of IPv6 multicast groups:                  1K
  number of directly-connected IPv6 addresses:      0.25K
  number of indirect IPv6 unicast routes:           0.25K
  number of IPv4 policy based routing aces:         0.5K
  number of IPv4/MAC qos aces:                      0.5K
  number of IPv4/MAC security aces:                 1K
  number of IPv6 policy based routing aces:         0
  number of IPv6 qos aces:                          0.5K
  number of IPv6 security aces:                     0.5K
    Related Concepts
    SDM Templates
    Related Tasks
    Setting the SDM Template

    Examples: Configuring SDM Templates

    This example shows how to configure the VLAN template: 

    		
Switch(config)# sdm prefer vlan 
Switch(config)# exit
Switch# reload
		Proceed with reload? [confirm]
    Related Concepts
    SDM Template Resources
    Related Tasks
    Setting the SDM Template

    Additional References for SDM Templates

    Related Documents

    Related Topic Document Title

    SDM commands

    Catalyst 2960-XR Switch System Management Command Reference

    Standards and RFCs

    Standard/RFC Title
    None

    —

    MIBs

    MIB MIBs Link
    All 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

    Technical Assistance

    Description Link

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    To receive security and technical information about your products, you can subscribe to various services, such as the Product Alert Tool (accessed from Field Notices), the Cisco Technical Services Newsletter, and Really Simple Syndication (RSS) Feeds.

    Access to most tools on the Cisco Support website requires a Cisco.com user ID and password.

    http:/​/​www.cisco.com/​support

    Feature History and Information for Configuring SDM Templates

    Release

    Modification

    Cisco IOS 15.0(2)EX1

    This feature was introduced.

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