Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

Packet capture strange issue !

Dear All ,

I have 2 routers connected over wimax link. I decided to capture packets between their WAN IPs. this is my configuration

access-list 114 per icmp host host echo

access-list 114 per icmp host host echo-reply

monitor capture buffer holdpackets

monitor capture buffer holdpackets filter access-list 114

monitor capture point ip cef icmp all both

monitor capture point associate icmp holdpackets

monitor capture point start icmp

Now when i try to ping from to, this is the following result


Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to, timeout is 2 seconds:


Success rate is 100 percent (5/5), round-trip min/avg/max = 52/80/140 ms

R1#sh monitor capture buffer all parameters

Capture buffer holdpackets (linear buffer)

Buffer Size : 262144 bytes, Max Element Size : 68 bytes, Packets : 0

Allow-nth-pak : 0, Duration : 0 (seconds), Max packets : 0, pps : 0

Associated Capture Points:

Name : icmp, Status : Active

No match on access-list either

R1#sh access-lists 114

Extended IP access list 114

10 permit icmp host host echo

20 permit icmp host host echo-reply

When i ran debug ip packet 114, i can see the packets going out but why are they not being matched by acl and also not in capture buffer ?

Can someone guide me pls ?

CreatePlease to create content