AVAYA IP Phones with 3Com 4200G switch.

[shamsudheen]

Here i am facing an issue that, Avaya IP phones are not able to communicate with Avaya IP Office 500 through the 3Com 4200G switch. for testing we connected the Avaya IPO500 and IP Phone to the Linksys switch directly, it is working fine . There are two Vlans (Data and Voice). Is there any one to help me to solve this issue?

 

[amriddle01]

This is not an IPO issue but a routin issue, you need to configure routing between the VLANs


Avaya Implementation Qualified Professional Specialist Technical Engineer (AIQPSTE)

 

[shamsudheen]

Dear amriddle01,

Thank you for your prompt reply

We configured the IP Routing and all Avaya phones and IP Office connected in same vlan (Vlan Voice). for your information, there are 5 nortel 1120e phones which are connected in same 3Com switch, it is communicating with IPO500 and working fine. only i am facing the issue with Avaya IP Phones. Please guide...

 

[amriddle01]

What are the type of handsets? What is an address of a handset? What is the address of the system? How are the addresses isued? If the system can't ping the handsets it will never work.
Also the system and handsets works the same no matter what switch they are conected to, so this will be an issue with the switch (90%), perhaps an LLDP issue?


Avaya Implementation Qualified Professional Specialist Technical Engineer (AIQPSTE)

 

[shamsudheen]

Dear amriddle01,

The The Avaya phones are 1608, 1616, 9608
The IP range for phones 172.16.13.X/24 (Static)
The IP address for IPO 500 is 172.16.13.100/24
DHCP disabled in IPO500

could you please explain little bit about LLDP?

 

[amriddle01]

At a guess you have the ports in the wrong VLAN's or not tagging the VLAN or something like that


Avaya Implementation Qualified Professional Specialist Technical Engineer (AIQPSTE)

 

[shamsudheen]

Dear Dear amriddle01,

We checked all the ways (tagging/untagging...etc). it is not that. Some strange thing is blocking the traffic in between. There is no ACL in the switch. Any way?

 

[amriddle01]

Put a pc in one of the ports you use for a handset and give it the address you would give to a handset, then try and ping the system, if you can't it proves it's the switch. If it's the switch then we aren't the best people to ask


Avaya Implementation Qualified Professional Specialist Technical Engineer (AIQPSTE)

 

[clarkstyx18]

we tried doing that, I cannot ping the system but from that system, I can ping that other laptop.. they are on the same VLAN and the weird thing is , they cannot ping the IP Office IP.

 

[amriddle01]

This must be a switch issue then, you have taken the handset out the equation and you know the system works as it's talking to the other handsets fine, as the IPO itself isn't VLAN aware that only leaves a switch issue


Avaya Implementation Qualified Professional Specialist Technical Engineer (AIQPSTE)

 

[shamsudheen]

Dear All,

I fixed the issue. let me explain; The 3Com switches are a bit difference with other switches, especially in VoIP part. We should give the manufacturer OUI address to provide the traffic in between phones and VoIP server. in this case we have to Add Avaya's OUI number. The OUI number is the first 6 digit of MAC Address. For example, if the MAC address is 001b4f51b3cb is the mac address, the OUI number is 001b4f. Then we have to change this OUI number to showing format like 001b.4f00.0000. Then there is MAC Mask for MAC address filtering. The common MAC Mask is ffff-ff00-0000. The these to Values must add to the 3Com switch's Voice VLAN. The command is:
[highlight #F57900]System-view[/highlight]
voice vlan mac-address [OUI Number] mask ffff-ff00-0000 description Avaya Phones.

Here this command will be
voice vlan mac-address 001b.4f00.0000 mask ffff-ff00-0000 description Avaya Phones. Then all other configurations will be over ride and the switch will allow the traffic to the Phones.

 

[tlpeter]

Keep in mind that Avaya has different ranges of mac addresses!
They bough Tenovis and Nortel which own there own range of mac addresses.


BAZINGA!

I'm not insane, my mother had me tested!

 

[amriddle01]

What a stupid switch setup that is, glad we don't use 3com


Avaya Implementation Qualified Professional Specialist Technical Engineer (AIQPSTE)

 

[shamsudheen]

Next time i will never suggest 3Com switches... i got a lot