Dell Force10 S55T S55 Configuration Guide FTOS 8.3.5.3 - Page 190
Setting Reuse and Restart Route Values, Command Syntax, Command Mode, Purpose
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www.dell.com | support.dell.com Figure 8-31. Setting Reuse and Restart Route Values Force10(conf-router_bgp)#bgp dampening ? Half-life time for the penalty (default = 15) route-map Route-map to specify criteria for dampening Set time before value decrements Force10(conf-router_bgp)#bgp dampening 2 ? Value to start reusing a route (default = 750) Set readvertise value Force10(conf-router_bgp)#bgp dampening 2 2000 ? Set suppress value Value to start suppressing a route (default = 2000) Force10(conf-router_bgp)#bgp dampening 2 2000 3000 ? Set time to suppress Maximum duration to suppress a stable route (default = 60) a route Force10(conf-router_bgp)#bgp dampening 2 2000 3000 10 ? route-map Route-map to specify criteria for dampening Use the following command in the CONFIGURATION ROUTER BGP mode to configure route flap dampening parameters. Command Syntax bgp dampening [half-life | reuse | suppress max-suppress-time] [route-map map-name] Command Mode Purpose CONFIG-ROUTER-B GP Enable route dampening. Enter the following optional parameters to configure route dampening parameters: • half-life range: 1 to 45. Number of minutes after which the Penalty is decreased. After the router assigns a Penalty of 1024 to a route, the Penalty is decreased by half after the half-life period expires. (Default: 15 minutes) • reuse range: 1 to 20000. This number is compared to the flapping route's Penalty value. If the Penalty value is less than the reuse value, the flapping route is once again advertised (or no longer suppressed). Withdrawn routes are removed from history state. (Default: 750) • suppress range: 1 to 20000. This number is compared to the flapping route's Penalty value. If the Penalty value is greater than the suppress value, the flapping route is no longer advertised (that is, it is suppressed). (Default: 2000.) • max-suppress-time range: 1 to 255. The maximum number of minutes a route can be suppressed. The default is four times the half-life value. (Default: 60 minutes.) • route-map map-name: name of a configured route map. Only match commands in the configured route map are supported. Use this parameter to apply route dampening to selective routes. To view the BGP configuration, use show config in the CONFIGURATION ROUTER BGP mode or show running-config bgp in EXEC Privilege mode. 190 | Border Gateway Protocol IPv4 (BGPv4)
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