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config trunking on sw HP 1800-24G

Posted on 2013-06-21
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Last Modified: 2016-02-18
Hi all,

I have a small infrastructure composed by a router and a switch.

Router Cisco 881:
-has vlan 2 and vlan 3
-has a port configured as trunk

Switch cisco Catalyst 2950:
-has vlan 2 and vlan 3. Each vlan has a certain number of ports designated.
-has a port configured as trunk

In this configuration, everything works fine.

I want to replace the Cisco Switch with a HP ProCurve 1800-24G.
This switch, as far as i see, doesn't have CLI; only GUI. This wouldn't be a problem since i don't know HP syntaxes for configuration.
In the GUI, if i try to designate a port to trunk mode, it doesn't let me; message appears "minimum 2 ports for trunking, maximum 8" (something like this). How does this work? why more ports for trunking? Why are there in the GUI maximum 12 trunks?
Anyway...i assigned 2 ports for trunking, i created the vlans and assigned them to several ports and went to test it in my infrastructure. Nothing is working. The port lights are blinking, but i have no connection; DHCP not woking. Even if i assign manually the ip parameters to the machines connected to the switch, it still doesn't work.

How do i have to configure this HP switch for trunking with my Cisco 881 router?

Any suggest would be highly appreciated
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Question by:braincap
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rauenpc earned 2000 total points
ID: 39267501
In the HP world, they went with terms more based in the telecom world than those that came from the Cisco side of the network. An HP trunk is the same as a telecom trunk - a bundle of ports acting as one logical port. You would know this better as a port-channel, etherchannel, team, bond, or LAG.

To create a Cisco-style trunk on an HP switch, you simply set tagging on a port. If you wanted a port to have vlans 1-3 with vlan 1 as the native, on the HP you would configure port x with vlan 1 untagged and vlans 2-3 tagged. That's about it, aside from the physical settings of the port such as speed/duplex.

Many people get thrown off by the mismatch in terms. Also, I know in the cli you assign ports to the vlan as tagged or untagged, and NOT vlans to the port. So you might need to poke around to find where to do the tagging.
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