IP SLA and Loopback 0 interface

zopechowski · ‎03-13-2007

Greetings from Poland,

is there any chance to use virtual interface (i.e. loopback 0) for the IP SLA feature of cisco routers? I would like to set a public ip address for this interface and would like to test www, dns and my core network.

Thanks in advanced,

ZO

drolemc · ‎03-19-2007

no, it not possible use loopback interface for IP SLA.

Try these links:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124cg/hsla_c/hsoverv.htm#wp1062629

http://www.cisco.com/en/US/products/ps6602/products_qanda_item0900aecd8017bd5a.shtml

Joe Clarke · ‎03-19-2007

If you mean source the IP SLA probes from a loopback interface, this is certainly possible. For example, if you want to measure the latency between the device, and a WWW server, 10.1.1.1, and your loopback IP is 1.1.1.1:

ip sla 113

http get http://10.1.1.1/ source-ip 1.1.1.1

You can even specify a source interface name instead of an IP address.