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Embedded Packet Capture question

Hi everyone

I have this strange problem with EPC on ASR1001: It works on some interfaces and it doesn't on others!

For example:

ASR-TEST__#moni cap buff MCBUFF

ASR-TEST__#moni cap po ip cef MCPOIN g0 both

ASR-TEST__#moni cap poin asso MCPOIN MCBUFF

ASR-TEST__#moni cap poin star all

Sending/Receiving some random traffic……..then

ASR-TEST__#sh moni cap buf MCBUFF

22:14:28.148 UTC Mar 20 2013 : IPv4 LES CEF    : Gi0 None

...

IT WORKS

Now if I make a small change:

ASR-TEST__#no moni cap po ip cef MCPOIN g0 both

ASR-TEST__#moni cap po ip cef MCPOIN g0/0/0 both

ASR-TEST__#moni cap poin asso MCPOIN MCBUFF

ASR-TEST__#moni cap poin star all

Sending/Receiving some random traffic……..then

ASR-TEST__#sh moni cap buf MCBUFF

IT DOESN'T WORK!!!

They only difference that I can think of is, G0 is a management port and G0/0/0 is an interface port (on a SIP I guess)

I have tested this on 3 different IOS XE versions. All the same.

Has anyone had a similar experience?

What is the alternative to do a packet capture on ASRs? Apparently "debug ip packet" won't work.

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Hall of Fame Master

Embedded Packet Capture question

You can contact Cisco to have them confirm that no packet capture is supported on management interface.