Dynamic failover with IP sla on IOS 12.

[Steph1963]

Hi to All,

I am trying to configure a dynamic failover with IP SLA on a Cisco 7200 using 12.2(33) IOS. I would like to have something similar as the following configuration:

ip sla monitor 1
type echo protocol ipIcmpEcho x.x.x.x
frequency 3
ip sla monitor schedule 1 life forever start-time now
!
!
track 10 rtr 1 reachability

access-list 101 permit icmp any host X.X.X.X echo
!
route-map LOCAL_POL permit 10
match ip address 101
set ip next-hop Y.Y.Y.Y
set interface Null0
!
ip local policy route-map LOCAL_POL

!

ip route XX.XX.XX.XX 255.255.255.0 YY.YY.YY.YY track 10
ip route XX.XX.XX.XX 255.255.255.0 ZZ..ZZ.ZZ.ZZ 254

My questions  are the following

Question 1: What is the equivalent of ip sla monitor in 12.3 for dynamic failover with IPsla

Should I used

ip sla ethernet-monitor 1
  type echo domain name ?

or

ip sla 1
  path echo X.X.X.X or ethernet mpid echo domain name or icmp-echo
  time out 1000
  frequency 3
  threhsold 2

I do not know if I have to used ethernet-monitor or ip sla. What is the domain name and the mpid associated to the ethernet-monitor ip sla.

In the case where I have to used ip sla 1, shoud I used a path-echo, ethernet mpdi or icmp-echo for dynamic failover

Question 2: In 12.3, what is the equivalent to ip sla monitor schedule 1 life forever start-time now.

I have found thec command ip sla schedule 1 start now but it does not seems that we could configure the duration.

Question 3: Should I also enable ip sla responder

Thanks for your help

Stéphane

[Nikita Singh · Accepted solution]

The IP SLA object tracking feature was first introduced in Cisco IOS release 11.2. The CLI used to configure Cisco IOS IP SLAs was modified in different releases of IOS. Today there are three different versions of the CLI commands, depending on which Cisco IOS software release you are running.

11.2:

rtr [operation-number]

type echo protocol ipIcmpEcho {destination-ip-address}

rtr schedule [operation-number] life forever start-time now

12.3(14)T

ip sla monitor [operation-number]

type echo protocol ipIcmpEcho {destination-ip-address}

ip sla monitor schedule [operation-number] life forever start-time now

12.4(4)T and later:

Ip sla [operation-number]

Icmp-echo {destination-ip-address}

ip sla schedule [operation-number] life forever start-time now

[Steph1963]

Thanks for this very complete answer

Stephane