Mitel phone compatibility with Cisco switches?? 1

[unclerico]

So we are going to be getting a Mitel solution with a 3300 ICP and 5330 and 5340 phones. The switches that will be used will be a Cisco PoE switch (either a 2960 or a PoE line card in our 4500/6500 switches). My question to you is knowing taht the Mitel phones support both LLDP and CDP will the mls qos trust cisco-phone command properly identify the phone and allow the Cisco switch to trust the CoS/DSCP markings coming from the phone?? Will the switch in the phone automatically set the CoS/DSCP markings to 0 for any device attached to the PC port?? I can't really find any solid documentation online regarding this. Thanks ahead of time.

I hate all Uppercase... I don't want my groups to seem angry at me all the time! =)
- ColdFlame (vbscript forum)

 

[slapin]

I would not rely on auto-qos designed for and by different manufacturer. The typical solution is to use voice VLAN which is recognized by the phone in vendor specific options, so any other device will just ignore it. Then just assign higher priority to this VLAN on the trunk port. Native VLAN with will be used by device behind the phone will use default priority. remarking CoS/DHCP to 0 is actually bad idea. It may work in majority of cases, but let's assume you deploy some sort of application which marks traffic for its own needs. A good example would be some sort of interactive terminal application which can connect to different hosts in the network and should not be slowed down by off-line traffic like email. You may tell that you don't have it in the network, setup remarking and quit from this job. Three years later someone else will be setting up this application and will be banging his/her head and crying on on-line forums. Like it was said here many times before: "keep it simple

 

[Mitelmatt]

use "auto qos trust voip" on the switch interfaces rather than Cisco Phone.

Just make sure that on the 3300 you have the COS set to 5 and DSCP set to 46. This is both in the system config and in the DHCP options to the phones

 

[unclerico]

thanks guys. i don't really want to do the auto qos voip trust unless i know that when the mitel phone is plugged in and exchanges cdp information with the cisco switch that the switch will recognize it as a phone and trust the dscp/cos markings. i don't want to blindly trust every device plugged into the wall.


I hate all Uppercase... I don't want my groups to seem angry at me all the time! =)
- ColdFlame (vbscript forum)

 

[Mitelmatt]

unclerico, that is exactly what i said in my post, this is HOW it works, it's also documented in the Mitel Eng guide. It does exchange CDP and works fine, just make sure the right options in the Mitel set the COS to 5 and DSCP to 46.

 

[unclerico]

mitelmatt, I apologize I did not take your last post as the mitel supported option, I just took it as your suggesting an alternative. If that's how it works then I'll set it up with that. Thanks a lot.

I hate all Uppercase... I don't want my groups to seem angry at me all the time! =)
- ColdFlame (vbscript forum)