Distributing Routing Table Updates to Line Modules

You can configure the forwarding table hold-down time allotted after a routing table change for the accumulation of additional updates and the subsequent distribution of the set of routing table changes to the line modules.

forwarding-table route-holddown

• Use to enhance SRP performance by increasing the hold-down time allotted for accumulating and distributing sets of routing table changes to the line modules.
• A higher timer value can enhance SRP performance, but it can also delay the implementation of routing table changes on the line modules. Be aware of the possible effect on network performance before you reconfigure the forwarding table hold-down timer.
• Setting the hold-down timer to zero (0) distributes an update after each change to the routing table, which can degrade SRP performance.
• Example

  host1(config)#forwarding-table route-holddown 15

• Use the no version to set the hold-down timer to the default value, 3 seconds.
• See forwarding-table route-holddown

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