VLAN across a MatrixN7 and a B-Series B5

[AJP]

Hello,

i recently inherited a small network composed entirely of enterasys gear.

I have been reading the many helpful posts in this forum, including the faq on the matrix n-series on how to create a 802.1q trunk, but still im struggling and im not one to give up but i decided to reach out for help.

Basically i have this setup with 2 remote locations:

- Site A with the matrix n7
- Site B with the B5
- Trying to setup a new vlan in the N7 and having it forward the new VLan across the trunk to the B5...simple eh...well, not for me 😞

The moment i create a new vlan and tag that vlan to the port, i lose connectivity between the 2 switches.

- In matrix n7 i have this:

set vlan create 2-11,99
set vlan name 2 Oficinas
set vlan name 3 Maq_Cafe
set vlan name 4 DataCenter
set vlan name 5 Piso1
set vlan name 6 Piso2
set vlan name 7 VilaConde
set vlan name 8 vlan8
set vlan name 9 consulta_externa
set vlan name 10 ILOS
set vlan name 11 vc2
set vlan name 99 outside
clear vlan egress 1 host.0.1;ge.1.23,25-48,52,54;rtr.1.1;ge.2.23-48,52;ge.3.37-48
set vlan egress 1 lag.0.1-48;ge.1.1-22,24,49-51,53;ge.2.1-22,49-51,53-54;ge.3.1-36,49-54 untagged
set vlan egress 2 lag.0.1-3;ge.1.49-53;ge.2.49-54 tagged
set vlan egress 2 ge.1.54 untagged
set vlan egress 3 lag.0.1-3;ge.1.49-54;ge.2.49-54 tagged
set vlan egress 4 lag.0.1-4;ge.1.49-54;ge.2.49-54;ge.3.1-2 tagged
set vlan egress 4 ge.1.25-48;ge.2.23,25-48;ge.3.37-48 untagged
set vlan egress 5 lag.0.1-3;ge.1.49-51,53-54;ge.2.49-54 tagged
set vlan egress 5 ge.1.52 untagged
set vlan egress 6 lag.0.1-3;ge.1.49-54;ge.2.49-51,53-54 tagged
set vlan egress 6 ge.2.52 untagged
set vlan egress 7 ge.2.24 untagged
set vlan egress 8 lag.0.5;ge.1.53;ge.2.53 tagged
set vlan egress 9 ge.3.49-50 tagged
set vlan egress 10 lag.0.1-5;ge.1.47-54;ge.2.24,49-54;ge.3.1-2 tagged
set vlan egress 10 host.0.1;ge.1.23 untagged
set vlan egress 11 ge.2.24 tagged
set vlan interface 9 create

- In the B5 i have this:

set vlan create 7
set vlan create 10
set vlan create 11
set vlan name 11 vc2
clear vlan egress 1 ge.1.7
set vlan egress 10 ge.1.1;ge.1.41-48;lag.0.1-6 tagged
set vlan egress 11 ge.1.43;ge.1.45 tagged
set vlan egress 11 ge.1.7 untagged

In bold is the port assigned vlan that its used for the trunking between the 2 switches, but i see them as untagged at port ge.2.24 in the N7 side and as tagged at port ge.1.43 in the B5 side.

What im trying to do is to tag same vlan 7 at both ends of the trunks on respective ports and configure a new vlan to span across the trunk, but the minute i add set vlan egress 7 ge.1.43 tagged to the B5 side, and tag the ge.2.24 at vlan 7 in the N7 side, i lose everything.

I really hope anyone can help me with this, and explain to me what am i not seing with the concept used by extreme networks, as i will be needing this to manage this network and im really depending on it.

Sorry for the long text .

Thank you.

António.

[Jason_Parker]

Glad to help
Take care
Jason

[AJP]

Thank you very much Jason.

Worked like a charm.

Suddenly all the issues i was having with vlan advertisement went away, and with minor impact to the network while i was doing the changes.

Thank you.

[Jason_Parker]

To respond to this comment

After reading some docs about GVRP, i have one doubt: can i disable GVRP globally or i need to disable it by port, and doing so can i do it without breaking existing VLANs?

Here are the best steps to take on this issue

• Disable GVRP (Global before disabling the ports (Set gvrp disable)
• Disable GVRP at the port which eliminates advertises the ports vlans as well as the switches VLAN’s to each other and including other switches) “set GVRP disable *.*.*”
• Enable GVRP Globally “set gvrp enable” this allows the switches to share information about VLAN’s between switches. The ports should never advertise their information

Disable on all ports unless you need to share the details such as running the command
set vlan dynamicegress 188 enable

set gvrp enable x.x.x (uplink port to start)
This allows mobility of a client/phone/etc

[AJP]

Hello,

i got my problem solved. Managed to understand how things work and heres my input:

- In the B5/C3 side,

Set vlan egress 7 ge.1.1-48 untagged
Set port vlan ge.1.1-48 7 modify-egress
Set vlan egress 1 ge.1.43 tagged
Set host vlan 7

- In the N7 side

Set gvrp disable
Set vlan egress 1 ge.2.24 tagged

Thank you all very much for all the input.

Now, to boldly go where i never went before...

To create a trunk between this same C3 stack (former B5) and a trio of Enterasys Vertical Horizon VH2402S and spam those same VLANS 🙂

But thats for another post hehe