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October 21st, 2013 16:00

Powerconnect 6248 to Cisco 2960

Here's the config I'm trying to get working:

Existing network full of VLANs using all Cisco Equip (typically 2960's in the IDFs)

I need to extend one of those vlans out to another building (using fiber) and I only have a Powerconnect 6248 to do it.

I'm using matching SFP+ 10gb modules between both switches and I do get connectivity between the switches.

~Problem~

The problem is that I need to make the 6248 "dumb" in the sense that I just want it to be an L2 extension of the 2960 inside the building. I don't want it to think, route, vlan (inside itself) ... nothing... ! just want it to extend the existing VLAN from the Cisco 2960 that it is connected to.

I have logged into the 6248 switch via console cable and defaulted it (Boot menu option #10) ... but it refuses to pass any traffic to/from the Cisco...

Any ideas?

2 Posts

October 21st, 2013 17:00

Let me add a bit more information:

- The port on the 2960 is set for "Trunking"

- The VLANs that need to pass between the two switches are 1151, 1159

- I am using the rear module, SFP+ 10gb on the 6248 (CLI interface ethernet 1/xg1)

- There is link between the two switches.

I have also done the following on the 6248:

- created the two VLANs: 1151 (data), 1159 (voice)

- Put port 1/xg1 into trunking mode (switchport mode trunk)

- allowed VLAN traffic (switchport trunk allowed vlan add 1151)

- allowed VLAN traffic (switchport trunk allowed vlan add 1159)

On the front of the 6248 switch I happen to be testing two devices on port 33 & 39... so I've done the following for those ports:

- Port 33 for testing data, (switchport access vlan 1151) 

- Port 39 for testing voip, (switchport access vlan 1159)

Results:

Port 33 (data)...device comes up ok and has general network/internet connectivity

Port 39 (voip)...phone cannot contact server will not come up.

So at this point I have extended data services ... but not phones....

Any help would be greatly appreciated.

5 Practitioner

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274.2K Posts

October 22nd, 2013 07:00

From your description it sounds like you almost have everything setup and working. On the Cisco switches is 1159 setup as a Voice VLAN?

 

Here is a good article with some information on Voice VLANs.

http://www.dell.com/downloads/global/products/pwcnt/en/pwcnt_voice_VLAN_support.pdf

 

Your port configuration for voice vlan should end up looking similar to this.

****VLAN 5 is configure for voice****

****VLAN 100 is configure for data. ****

****CoS (802.1p) of 4 is use for the the voice****

 

Console(config)# voice vlan

Console(config)# interface ethernet 1/g20-1/g24

Console(config-if)# switchport mode general

Console(config-if)# switchport general allowed vlan add 5 tagged

Console(config-if)# switchport general allowed vlan add 100 untagged

Console(config-if)# switchport general pvid 100

Console(config-if)# switchport general allowed vlan remove 1

 

Console(config-if)# voice vlan 5

Console(config-if)# voice vlan dot1p 4

Console(config-if)# voice vlan data priority untrust

Console(config-if)# end

 

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