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Trunking & VLAN 1 between Cisco & HP

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gtg
Occasional Visitor

Trunking & VLAN 1 between Cisco & HP

I have a 3500yl connected to a Cisco Catalyst 6500. I've setup a simple 802.11q trunk between them

This is the config from the 3500yl

Running configuration:

; J9050A Configuration Editor; Created on release #T.12.09

hostname "hq-hpcs1"
snmp-server contact "Network Services"
module 3 type J90XXA
ip default-gateway 192.168.1.1
sntp server 192.168.24.75
timesync sntp
sntp unicast
snmp-server community "public" Unrestricted
vlan 1
name "DEFAULT_VLAN"
untagged 15-44,A1-A4
ip address 192.168.1.50 255.255.255.0
tagged 45-48
no untagged 1-14
exit
vlan 26
name "VLAN26"
untagged 1-12
ip address 192.168.26.199 255.255.255.0
tagged 45-48
exit
vlan 32
name "Parc Menai"
untagged 13-14
tagged 45-48
no ip address
exit
management-vlan 1
spanning-tree

This is the port config on the 6500

set trunk 6/12 on dot1q 1-1005,1025-4094

VLANs are working between the switches fine, I just can't connect/ping/access the 3500 via the VLAN 1 IP address. The 3500yl also can't ping anything else either.

Can someone suggest what I'm doing wrong ?

Thanks,

GTG
3 REPLIES
Mohieddin Kharnoub
Honored Contributor

Re: Trunking & VLAN 1 between Cisco & HP

Hi

On which port on the 2900 you have this Uplink?

Have you changed the Native Vlan on the Cisco switch?

Did you try to leave the Uplink Untagged for Vlan1?

Usually and by default the Native Vlan (Untagged) on Cisco is Vlan1, and if you left it untagged on both ends, it will work just fine.

Good Luck !!!
Science for Everyone
gtg
Occasional Visitor

Re: Trunking & VLAN 1 between Cisco & HP

> On which port on the 2900 you have this Uplink?

Port 47

> Have you changed the Native Vlan on the Cisco switch?
> Did you try to leave the Uplink Untagged for Vlan1?

According to the Cisco line

set trunk 6/12 on dot1q 1-1005,1025-4094

VLAN 1 is trunked


> the Native Vlan (Untagged) on Cisco is Vlan1, and if you left it untagged
> on both ends, it will work just fine.

I'll try changing the Cisco config to be

set trunk 6/12 on dot1q 2-1005,1025-4094

so that VLAN1 is un-trunked, and the 2900 config to:

vlan 1
name "DEFAULT_VLAN"
untagged 15-48,A1-A4
ip address 192.168.1.50 255.255.255.0
no untagged 1-14
exit

Correct ?
Markku Leinio
Valued Contributor
Solution

Re: Trunking & VLAN 1 between Cisco & HP

Hi, leave VLAN 1 in the Cat6500 config ("set trunk 6/12 on dot1q 1-1005,1025-4094" is ok), and on the HP side set VLAN 1 as untagged on port 47.

That should make VLAN 1's match between both switches (VLAN 1 is "native VLAN" on Cisco terminology, "untagged" on HP terminology).