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тАО07-05-2018 05:38 AM
тАО07-05-2018 05:38 AM
3Com 4500 VLAN Config help needed
Hi Guys,
I need some assistance with configuring VLANs on a 3Com 4500 switch. My role doesn't really involve looking after network gear but this issue has now ended up on my lap and I'm looking for some guidance please.
An unused 3Com 4500 switch was recently replaced under HPs lifetime warranty support and the replacement unit is an exact same refurbished model. We recently extended our office to another building next to our existing building. A new fibre circuit was installed connecting to the two buildings (fibre to ethernet media converter each side). Connectivity is good but I need to run two different VLANs to the new building. Environment is as follows.
Building A:
Procurve 2510G (core)
VLAN 1 - 10.207.1.x
VLAN 6 - 10.209.1.x
Ports 1-44 is VLAN 6 Untagged
Ports 45-48 is VLAN1 Untagged
Port 47 is VLAN6 tagged
Port 47 is the port which has the fibre to building B connected
Building B:
3Com 4500 (core)
VLAN 1 - 10.207.1.x
VLAN 6 - 10.209.1.x
Ports 1-46 is VLAN 6 Untagged
Ports 47-48 is VLAN 1 Untagged
Port 48 is in "Hybrid mode" and is also VLAN 6 tagged
Port 48 is the port which has the fibre to building B connected
From what I've read is that the uplink port (48) has to be in hybrid mode to carry multiple VLANs. The commands I ran are below:
interface Ethernet1/0/48
port link-type hybrid
port hybrid vlan 1 untagged
port hybrid vlan 6 tagged
The issue I'm facing that any device on VLAN 6 in building A is not able to communicate with any host on VLAN 6 in building B and vice versa.
I'm doing things wrong somewhere. Any advice appreciated.
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тАО07-05-2018 06:44 AM - last edited on тАО07-06-2018 01:16 AM by Parvez_Admin
тАО07-05-2018 06:44 AM - last edited on тАО07-06-2018 01:16 AM by Parvez_Admin
Re: 3Com 4500 VLAN Config help needed
Greetings Dvillijg,
Standard trunk configuration on 4500G can also handle multiple vlans. In
your case:
port link-type trunk
port trunk permit vlan 1 6
Hope this helps
--
Kindest Regards,
Frankie Cruz
Network Administrator
Lehigh Carbon Community College
4525 Education Park Drive
Schnecksville, PA 18078
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тАО07-09-2018 05:55 AM
тАО07-09-2018 05:55 AM
Re: 3Com 4500 VLAN Config help needed
can you share output of dis int e1/0/48 and an equivalent of this from procurve int 47
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тАО07-11-2018 05:00 PM
тАО07-11-2018 05:00 PM
Re: 3Com 4500 VLAN Config help needed
The order to do this in is:
Do you have link lights?
What does a show lldp neighbour command show? (May need to switch LLDP on on both switches)
Can the switches talk to each other on either VLAN?
And as above, don't use "hybrid", just use "trunk", although the "hybrid" config should be working fine for you.