Does 2950 switch support IP SLA ?

[sivakondalarao]

Hi,

I am trying to implement IP SLA.

Can I implement it on layer2 switches?

Regards

skrao

[David Stanford]

IP SLA is supported on the 2950 providing you have the minimum code that supports SAA/IP SLA

Cat2950 - 12.1(11)EA1

[sivakondalarao]

davistan,

that means it can be configured as monitor or responder?

Regards

skrao

[David Stanford]

I have setup it up as either monitor or responder, depending on what you want it to do

[Paul Davidson]

The Cisco 2950 switches seem to suport legacy RTR (Response Time Reporter) NOT IP SLA. SLA has been called various titles during its evolution to SLA. The feature comparison chart below states IP SLA is NOT availalbe on the 2950.

http://packetlife.net/wiki/feature-comparison-catalyst-2950-2960-3550-3560/

Indeed I cannot access IP SLA as a cmd  under either 12.1(14)EA1a or 12.1(22)EA13 on the 2950 switches I have available! IP SLA is however available on the 3550 switches I am running!

I suggest it may well be the case that the 2950s use the RTR command instead.

http://www.cisco.com/en/US/docs/ios/12_3t/fun/command/reference/cfrgt_10.html

Information generally though  for RTR is scarce, because I suggest of Search Engine 'bleed' referencing RTR as 'Router'!

My advice is to explore RTR

https://supportforums.cisco.com/thread/2152754

...work with what is availalable rather than dwelling on what is not, or choose to revise just the theory...if your need is mostly for exams.

The good news is ALS1|(config)#RTR responder

...reportedly works just as well as #ip sla responder

http://mellowd.co.uk/ccie/?p=649

Please login & rate this comment>>>so as to highlight the issue I hope as SOLVED

[chris.kordus]

Hi Paul,

Thanks for your informed response; it seems this post is perfect timing for me as I just started an ip sla lab…

To concur with Paul, my 2950s IOS (12.1(22)EA14) do not support ip sla (but my 3550s 12.2(44)SE6 do)

2950(config)#ip s?

security source-route sticky-arp subnet-zero

However, I was able to get the 2950s to work as rtr responders and was able to finish my lab (ccnp switch lab 5-2: ip service level agreements in a campus environment).

I did a quick search and found this documentation from cisco:

Response Time Reporter Enhancements

http://www.cisco.com/en/US/docs/ios/12_0t/12_0t3/feature/guide/RTRenh.html

Thanks again Paul,