Thursday, September 17, 2015

Practical Use for Disabling Layer2 Keepalives…

 

Retail store has no Ethernet device plugged into LAN interface of MPSL router. How to test from Corp Core Switch to verify connectivity to store?

KEEP-ALIVES-ENABLED-DISABLED

BGP Fail-Over!!

 

Interesting observation… retail store has a main MPLS connection and a backup connection over the Internet. When the main connection goes down, the CE router immediately injects floating-static route with AD of 21 into RIB and re-routes traffic to neighboring Cisco ASA Firewall programmed for IPSEC backup to Service-Provider.

However, there is packet-loss when the CE router goes down… for (3) minutes…

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