A bit of a lengthy one...
We have recently installed a new Avaya PABX system (S8700 server and G650 Media Gateways). This connects to a Cisco 2960-48T ...C2960 Software (C2960-LANBASEK9-M), Version 12.2(37)SE....
The problem is when we enable trunking (Avaya insists) on all ports connecting to the S8700 and G650 there is no connectivity on the server control interface NIC and IPSI. I had no problem seeing the Medpro and the CLAN. This basically just renders the VoIP solution useless as you can not enable VLAN tagging on the Avaya System.
Avaya has now setup a testbench with similar setup and getting same result.
Avaya engineer's diagnosis is a bit concerning.... quote
"The steps I took are as follows:
- enabled VLAN tagging whilst the Avaya gear is connected to our lab Cajun switch (this worked fine)
- turned off VLAN tagging and moved all connections to your Cisco 2960 switch to ports bound to default VLAN (no connectivity)
- moved the connections from your Cisco (2960) switch to another Cisco switch (2950) that we have and I was able to get layer 2 connectivity (saw all the MAC addresses of the connected devices).
I have heard that certain IOS releases on some Cisco switches has some interoperability issues. Please note the software versions below.
Cisco IOS (tm) C2950 Software (C2950-I6K2L2Q4-M), Version 12.1(22)EA10
Cisco IOS Software, C2960 Software (C2960-LANBASEK9-M), Version 12.2(37)SE " end of quote.
First concern is that where does this leave the (Cisco) customer with future IOS releases and devices reaching EOL.(which I pointed out that his 2950 has already reached).
Secondly... how do we get this working? There must be similar systems out there or were we sold a dud.
Any comments/suggestions welcome.