Scale Profiles
Scale profiles help you tune your router that is running Cisco IOS XR software. Profiles help you run the router more efficiently based on your requirements.
Market segment types or network architectures can place different scale demands on the router. Therefore, it’s important to configure the scale profile so that your router works as efficiently as possible.
Review the following considerations when setting a scale profile:
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Use of the router as a Layer 2 transport device, thus requiring the support of high Layer 2 scale numbers.
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Use of the router primarily as a Layer 3 device that provides Layer 3 virtual private network (VPN) services, thus requiring the support of a high number of Layer 3 routes.
Scale Profile Types
There are three scale profiles available on your router:
Default Scale Profile
The default scale profile supports deployments that require large Layer 2 MAC tables (up to 512,000 entries) and a relatively small number of Layer 3 routes (less than 512,000).
Layer 3 Scale Profile
The Layer 3 Scale Profile supports deployments that require smaller Layer 2 MAC tables (less than 128,000 entries) and relatively higher Layer 3 routes (up to 1 million).
Layer 3 XL Scale Profile
The Layer 3 XL Scale Profile supports deployments that require minimal Layer 2 functionality and a large number of Layer 3 routes (up to 1.3 million).
Note that the support for up to 1.3 million routes is split into IPv4 scaled support and IPv4/IPv6 scaled support. You can configure up to 1.3 million IPv4 routes, or up to 1 million IPv4 routes with 128,000 IPv6 routes.
Restrictions with Layer 3 XL Scale Profile
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Video monitoring isn’t supported with the Layer 3 XL scale profile.
Configure Scale Profile
Recommendations and Guidelines
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We recommend that you configure scale profiles in the administration configuration mode and remove any L3 scale profiles committed via the global configuration mode.
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Scale profile settings in the administration configuration override scale profile settings in the global configuration.
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If the scale profile is set only in the global configuration, the setting takes effect.
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Once you configure the scale profile, you must use the reload location all command to reload the device, or the line cards to enable the profile.
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You can increase the memory available for BGP if you configure Layer 3 XL profile on the router.
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Configuring the layer 3 XL profile reduces the memory available for other processes.
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To activate the new profile, you must manually reboot the system.
Set Scale Profile
The tasks in this module describes how to set the scale profile on your router.
Procedure
Step 1 |
To set the scale profile on the router, use the hw-module profile scale command in the Administration Configuration mode. Example:This example shows how to configure Layer 3 profile on the router.
You can configure the Layer 3 XL profile on the router for BGP using the scale l3xl keyword to increase the memory. |
Step 2 |
Reload the line cards to enable the profile
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Step 3 |
Verify that the configured scale profile is enabled, use the show hw-module profile scale command which displays the active scale profile. If the active scale profile is different than what was configured, the line cards (or router) hasn’t been reloaded as required.
You can verify the memory for BGP and the other processes using the following commands before and after the configuration:
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