Multiple VLANs on 2910al switch from 3500 backbone switch

[ArjanA]

Hi,

I must be missing something really obvious, but I cannot get my VLANs up and running on a 2910 edge switch.

I have the attached the switch to a port on the 3500 and added all VLAN's tagged to the port on both switches.

I can ping the switch from each other's CLI.

If I put a device in the 2910 on one of the VLAN's, they don't get the right connection.

Configuration of the uplink port on the 3500:

interface 27
   unknown-vlans block
   no power-over-ethernet
   tagged vlan 27,1100,2000
   untagged vlan 2
   exit

Configuration of the vlans (uplink port 24)on the 2910:

vlan 1
   name "DEFAULT_VLAN"
   no untagged 1-24
   no ip address
   exit
vlan 27
   name "NETMANAGEMENT"
   ip address 172.16.27.249 255.255.255.0
   tagged 24
   ip igmp
   exit
vlan 1100
   name "Administratief VLAN 1100"
   untagged 13-23
   ip helper-address 172.16.24.100
   ip forward-protocol udp 172.16.25.103 4011
   ip forward-protocol udp 172.16.25.103 tftp
   tagged 24
   no ip address
   exit
vlan 2000
   name "Educatief VLAN 2000"
   untagged 1-12
   ip helper-address 172.16.25.100
   ip forward-protocol udp 172.16.25.103 4011
   ip forward-protocol udp 172.16.25.103 tftp
   tagged 24
   no ip address
   exit

It must be something simple, but I can't get it.

Should routing be enabled?

Kind regards,

Arjan

[ISoliman]

Configuration of the uplink port on the 3500:

interface 27
   unknown-vlans block
   no power-over-ethernet
   tagged vlan 27,1100,2000
   untagged vlan 2
   exit

Configuration of the vlans (uplink port 24)on the 2910:

vlan 27
   name "NETMANAGEMENT"
   ip address 172.16.27.249 255.255.255.0
   tagged 24
   ip igmp
   exit

VLAn 27 is tagged in one end and untagged on the other, fix that and check, should be both sides tagged or untagged.

Also please confirm which one is handling routing ? the 3500 or the 2910 ?? (the 3500 is HP right ?? )

[scifan3]

Is the 2910 supposed to be the gateway for vlans1100 and 2000?

looking at your configuration snippet, you're tagging 27, 1100 and 2000 to port 27 which I'm assuming is your "uplink" port connected to port 24 on the 2910.

not sure why your untagging vlan 2 over port 27, but that shouldn't interfere.

If the 3500's handling the routing/gateway addresses for vlan 1100 and 2000, there's no need to have an ip helper address on the 2910... (that actually could cause problems since it could interfere with your dhcp handshake...