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Catalyst 3550 Multilayer Switch Command Reference
OL-8566-01
Chapter 2 Catalyst 3550 Switch Cisco IOS Commands
switchcore
switchcore
Use the switchcore global configuration command to reserve switch resources for high-priority traffic
or to give buffer storage more priority than packet retrieval. Use the no form of this command to return
to the default setting.
switchcore {resource-allocation priority | wirespeed-store}
no switchcore {resource-allocation priority | wirespeed-store}
Syntax Description
Defaults When quality of service (QoS) is disabled, both the resource-allocation priority and the
wirespeed-store options are disabled.
When QoS is enabled, resource-allocation priority is enabled, and wirespeed store is disabled.
Use the resource-allocation priority keywords when you want to reserve some switch buffers for
high-priority traffic. Use the wirespeed-store keywords when you want to allocate more switch
bandwidth to frame storage than to frame retrieval; this is only needed when you expect lots of broadcast
and multicast traffic on the switch, and you want frame retrieval to be the dominant operation.
Command Modes Global configuration
Command History
Usage Guidelines You must globally enable QoS by using the mls qos global configuration command before the
switchcore global configuration command takes effect.
Examples This example shows how to disable resource-allocation priority:
Switch(config)# no switchcore resource-allocation priority
This example shows how to enable QoS and enable the wirespeed-store:
Switch(config)# mls qos
Switch(config)# switchcore wirespeed-store
You can verify your settings by entering the show controllers switch {resource-allocation priority |
wirespeed-store} privileged EXEC command.
resource-allocation priority Reserve switch resources for high-priority traffic. Lower-priority
traffic is likely to be rejected during times of congestion.
wirespeed-store Reserve bandwidth for buffer storage to accommodate broadcast and
multicast storms.
Release Modification
12.1(6)EA1 This command was introduced.
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