interface vlan trunking

[ped3nzki]

Hi Im struggling on how to configure a particular interface to a "trunk" and accept multiple vlans.

Trunking definition on HP procurve products seems quite different from cisco's "port trunking".

Basically, i just need to let a particular port accept 3 vlans (1, 10, 20).

P.S. This thread has been moved from Switches, Hubs, Modems (Legacy ITRC forum) to ProCurve / ProVision-Based. - Hp Forum moderator

[Emil_G]

Hello,

You are right! Trunk in the ProCurve language means Link Aggregation, thus the same as Port Channel in Cisco.

For example if you want to configure port 24 to be a trunk with native VLAN 1 and allowed vlans 10 and 20 this would be the commands on most ProCurve switches.

ProCurve#configure

ProCurve(configure)# vlan 1 untagged 24

ProCurve(configure)# vlan 10 tagged 24

ProCurve(configure)# vlan 20 tagged 24

The bahaviour of the port:

-Every frame which arrives at the pot without VLAN tag is assigned to VLAN 1

-Frames tagged with VLANs 10 and 20 are accepted and assigned to the respective VLAN.

-Frames tagged in other VLAN Nr are discarded.

Similar behaviour in outbound direction.

A port can have only 1 untagged VLAN. If you configure new untagged VLAN the old one is removed.

It is possible to have only tagged VLANs on a port. In the example above if I decide that I dont want to accept untagged packets

ProCurve#configure

ProCurve(configure)# no vlan 1 untagged 24

ProCurve(configure)# vlan 1 tagged 24

This applies only to former ProCurve or ProVision switches.

HTH