You may want to hit up the Ciena mailing list, most people here are cisco oriented. If storm control or multicast filtering is turned on/misconfigured, you could see that behavior. It could be on any of the devices in the path, yours or theirs. No clue how to tell on their side but on the cisco side the interface configs should be pretty obvious.
Mack McBride | Senior Network Architect | ViaWest, Inc. O: 720.891.2502 | C: 303.720.2711 | [email protected] | www.viawest.com -----Original Message----- From: cisco-nsp [mailto:[email protected]] On Behalf Of Mike Sent: Friday, July 08, 2016 12:03 PM To: [email protected] Subject: [c-nsp] ATT ASE Madness - one way ethernet Hi, I have a new ATT ASE circuit and they have been troubleshooting now for two weeks. The symptom simply is that I appear to have one-way connectivity; Packets go from 'site a' to 'site b', but Broadcast/Multicast does not go back from 'site b' to 'site a'. For example, I can put static arp entries in both peices of my gear at either end, and have ping connectivity. But if I remove these, then arp doesn't complete and thus ping does not work. Stranger still, the 'site b' can see the CDP neighbor announcements from 'site a', but that site doesn't see the announcements from 'site b'. Naturally ATT thinks it's me and wants me to replace / test / etc, but I think it's misconfiguration on their end since its clearly broadcast/multicast not being forwarded. On ATT end they have a Ciena 3960 if that helps anyone. On my side, 'site a' is a ME3600x while 'site b' is an ASR920, if that helps. Does anyone have a better idea as to what to look at here? Mike- _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ This message contains information that may be confidential, privileged or otherwise protected by law from disclosure. It is intended for the exclusive use of the addressee(s). Unless you are the addressee or authorized agent of the addressee, you may not review, copy, distribute or disclose to anyone the message or any information contained within. If you have received this message in error, please contact the sender by electronic reply and immediately delete all copies of the message. _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
