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Beginner

ACI SPAN Session

I want to do an ACI SPAN Session, but I need to source three ports/interfaces on a Leaf………can I do that?

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Cisco Employee

Re: ACI SPAN Session

Hi Kevin, 

 

Yes you can do an access span with multiple interfaces on the same switch for a single SPAN session. You will just have to have a destination IP to send them to that needed to be learned in the fabric (ex like a VM with a learned IP) Here is example showing multiple interfaces defined.

 

Screen Shot 2017-08-30 at 3.30.19 PM.png

 

Let me know if this helps!

 

Thanks,

 

Michael G. 

12 REPLIES 12
Cisco Employee

Re: ACI SPAN Session

Hi Kevin, 

 

Yes you can do an access span with multiple interfaces on the same switch for a single SPAN session. You will just have to have a destination IP to send them to that needed to be learned in the fabric (ex like a VM with a learned IP) Here is example showing multiple interfaces defined.

 

Screen Shot 2017-08-30 at 3.30.19 PM.png

 

Let me know if this helps!

 

Thanks,

 

Michael G. 

Beginner

Re: ACI SPAN Session

Perfect I will try that thanks

Highlighted
Beginner

Re: ACI SPAN Session

Spoke to soon....I'm on version 2.0(2f).......It doesn't give me the option to select individual paths, just the entire source EPG path.....your GUI seems to be a newer version, unless I'm looking in the wrong place.   Any ideas?
Thanks

Beginner

Re: ACI SPAN Session

Spoke to soon....I'm on version 2.0(2f) It doesn't give me the option to select individual paths, just the entire source EPG path your GUI seems to be a newer version, unless I'm looking in the wrong place.   Any ideas?
Thanks

Cisco Employee

Re: ACI SPAN Session

Hi Kevin,

 

You should have the option to bypass configuring a source EPG and just creating source paths instead. Can you take a screenshot of what you are seeing? I do not have a 2.0(2f) fabric readily at this second.

 

Please let me know, 

 

Thanks

Beginner

Re: ACI SPAN Session

 

Sure see below

 

2017-08-30_17-47-03.jpg

 

 

 

Cisco Employee

Re: ACI SPAN Session

Let me check if this is just supported in later versions

Cisco Employee

Re: ACI SPAN Session

It looks like you are in fabric polices not access policies? What port are you trying to SPAN?  A front panel port or a port inside the fabric facing the spine?

Beginner

Re: ACI SPAN Session

good catch..........I was not in access policies.......I see where I can lock it down to the leaf host port......let me see how it goes.
Beginner

Re: ACI SPAN Session

I configured it, and my "Operation State" didn't come up it stayed "down" when I enabled the "Administrative state"......any ideas?

Cisco Employee

Re: ACI SPAN Session

Also to clarify, if the destination is an IP on a different leaf this is considered an ERSPAN. If not and you are sending it to a specific interface on the same leaf this would be a local span.

Beginner

Re: ACI SPAN Session

OK.....understood
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