Embedded Packet Capture on ASR920

[sherrick]

Hello,

I'm running into issues running a packet capture on an ASR920 (using configurations that work on other router models). When setting up an ip cef capture point, the captures are coming up with no data. Tried testing on a physical interface and a BDI. 

I was able to capture process switched traffic (by switching the config below from "ip cef" to "process-switched"). So I know my script works. I'm just not able to capture data plane traffic on the ASR920. 

I've seen posts online about people having this same issue, but couldn't find documentation from Cisco covering this. Is anyone aware of this?

!
monitor capture buffer BUF size 1024 max-size 1518 linear
!
monitor capture point ip cef POINT BDI100 both
!
monitor capture point associate POINT BUF
!

Thank you,

Steve

[tlewisflood]

And by the way, I know it wasn't mentioned, but I too had the issue and I was sure to use the start/stop versions of this:

monitor capture point start POINT

 ... wait a bit ...

monitor capture point stop POINT

[jlopezmo]

EPC is not supported on ASR920, you can try LSPAN/RSPAN

https://www.cisco.com/c/en/us/td/docs/routers/asr920/configuration/guide/ce/17-1-1/b-layer2-xe-17-1-asr920/m_span_asr920.html#concept_A5F15EF99AFC4D81A17E549546BAD999