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Posts Tagged ‘IP SLA’

Decreasing BGP Failover Time Using IP SLA

posted in Cisco Networking
by on June 13th, 2012 tags: , , , ,

Service providers are moving away from from providing TDM point-to-point based circuits and we are now seeing more provisioning of Metro Ethernet to the customer site.

This leaves us with an issue in that when your BGP peer becomes unreachable, because your local FastEthernet interface on the CE will still be up/up as it will probably be connected to some Layer 2 device, the customer network could suffer a complete outage for up to 3 minutes. The BGP default hold time is 180 seconds. For a customer that has been sold a 100M pipe with resilience this is not going to make them happy.

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