10-18-2018 01:09 PM
Hi everyone,
I am seeing some connections (one or two) in my WAE that appear as passthrough without a clear reason:
WAECore# show tfo connection summary
...
Local IP:Port Remote IP:Port Peer ID ConnType
a.b.c.d:51332 e.f.g.h:80 N/A PT In Progress
WAEBranch# show tfo connection summary
...
Local IP:Port Remote IP:Port Peer ID ConnType
a.b.c.d:51332 e.f.g.h:80 N/A PT No Peer
I have been reading that "PT No Peer" issue appears when the connection does not recognize the other end WAE during the three steps handshake process.
This triggers some questions:
1. Why would this happen only for one (maximum two) connection and not for the rest of the connections I see at the tfo summary?
2. What can I do to troubleshoot these connections?
3. Is there anything I can do to restart those kind of connections from WAE (flush the connection to be filed as per the optimization policies)?
Thanks in advance.
Solved! Go to Solution.
10-18-2018 06:28 PM
Hi,
Local IP:Port Remote IP:Port Peer ID ConnType
a.b.c.d:51332 e.f.g.h:80 N/A PT In Progress
- That can be with any new connections that just came to the box, as it doesn't have the full TCP-handshake yet.
- After that it can say like PT no Peer in your case
PT no peer- means there are no 2 WAE in the path,
In your case, you see that connections has been redirected at your core site.
But on another remote site ( e.f.g.h:80 ), it has not been.. Or you might be don't have a WAE at that site.
If you do, check if you redirect this type of connection, srcIP and dstIP on port 80.
To answer your questions:
1. Why would this happen only for one (maximum two) connection and not for the rest of the connections I see at the tfo summary?
- maybe that IP ( remote and/or local) are not in the ACL for wccp or AppNav redirection..
- Or maybe you don't have the WAE at that remote site
2. What can I do to troubleshoot these connections?
- Only way, is to trace this flow, and make sure you have WAE at remote site and you do redirect it
3. Is there anything I can do to restart those kind of connections from WAE (flush the connection to be filed as per the optimization policies)?
- It is not related to the policy-map optimization rules, neither to the Ads that you run on different sites. If it would be, the reason will be different for PT.
Hope this helps!
Regards,
Alex
10-18-2018 06:28 PM
Hi,
Local IP:Port Remote IP:Port Peer ID ConnType
a.b.c.d:51332 e.f.g.h:80 N/A PT In Progress
- That can be with any new connections that just came to the box, as it doesn't have the full TCP-handshake yet.
- After that it can say like PT no Peer in your case
PT no peer- means there are no 2 WAE in the path,
In your case, you see that connections has been redirected at your core site.
But on another remote site ( e.f.g.h:80 ), it has not been.. Or you might be don't have a WAE at that site.
If you do, check if you redirect this type of connection, srcIP and dstIP on port 80.
To answer your questions:
1. Why would this happen only for one (maximum two) connection and not for the rest of the connections I see at the tfo summary?
- maybe that IP ( remote and/or local) are not in the ACL for wccp or AppNav redirection..
- Or maybe you don't have the WAE at that remote site
2. What can I do to troubleshoot these connections?
- Only way, is to trace this flow, and make sure you have WAE at remote site and you do redirect it
3. Is there anything I can do to restart those kind of connections from WAE (flush the connection to be filed as per the optimization policies)?
- It is not related to the policy-map optimization rules, neither to the Ads that you run on different sites. If it would be, the reason will be different for PT.
Hope this helps!
Regards,
Alex
10-19-2018 08:53 AM
Thanks a lot for your explanation, Aleksey!
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