VSS with BFD detection

[gnijs]

I got this working, but detection of dual-active is really slow. I can't get conversion below 20 seconds. Below is my interface config. Is this the best that is possible ? I know Pagp+ is (much)faster, but i am focusing on BFD now.

interface GigabitEthernet1/4/14

description BFD detection interface

no switchport

ip address 10.96.2.177 255.255.255.252

load-interval 30

carrier-delay msec 0

bfd interval 50 min_rx 50 multiplier 3

end

interface GigabitEthernet2/4/14

description BFD detection interface

no switchport

ip address 10.96.2.181 255.255.255.252

load-interval 30

carrier-delay msec 0

bfd interval 50 min_rx 50 multiplier 3

end

[Giuseppe Larosa]

Hello Geert,

you can gain some speed by excluding some interfaces from the VSL recovery procedure:

http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SX/configuration/guide/vss.html#wp1090844

When you configure the exclusion list, note the following information:

•The interface must be a physical port configured with an IP address.

•The interface must not be a VSL port.

•The interface must not be in use for IP BFD dual-active detection.

Hope to help

Giuseppe