Thursday, May 28, 2009

Route selection by host reachability with Cisco SLA

Monitor an Internet address and change default route if that address is unreachable.

Remote IP to Monitor:
Primary Provider Gateway:
Backup Provider Gateway:


ip route

ip sla 1
ip sla schedule 1 life forever start-time now

track 1 ip sla 1 reachability

ip route track 1
ip route 200

Show Commands:

router#sh ip sla statistics
IPSLAs Latest Operation Statistics
IPSLA operation id: 1
Latest RTT: 1 milliseconds
Latest operation start time: *16:00:53.925 UTC Tue Jan 27 2009
Latest operation return code: OK
Number of successes: 33
Number of failures: 0
Operation time to live: Forever

router#sh track 1
Track 1
IP SLA 1 reachability
Reachability is Up
1 change, last change 11:14:51
Latest operation return code: OK
Latest RTT (millisecs) 1
Tracked by:

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