ProCurve 5406zl Inter-VLAN routing issue

Posted on 2012-09-14
Last Modified: 2012-09-18
I have a ProCruve 5406zl as my core switch of my production network.  I only have two modules installed.  The whole switch is one VLAN.  I'm trying to test out inter-vlan routing on a few ports before i go wide spread.

My general setup is as follows:
Router's Internal IP:

ProCruve Info:

I've typed in IP Routing already.

VLAN one (which has other switches connected to VLAN 1 by default) can all get to the internet.

I would like to allow VLAN15 to access vlan 1 and get to the internet.

Currently my test computer is plugged directly into the one port (19) that is on VLAN 15 (untagged). and i have my ip set up as  The default gateway is

I can ping 15.34, but i can not ping 45.34 or any other ip on the other network execpt (which i can not figure out why).

Can you please assist with this?

Please let me know if you have any questions.

Question by:rwiltzius
    1 Comment
    LVL 17

    Accepted Solution

    Your devices on vlan1 are set up with a default gateway of
    If anyone tries to communicate with them from another subnet (in your case 10.10.15.x), they'll send packets to the gateway, instead of the switch, which provides inter-vlan routing.
    Another highly possible problem is that your firewall/router ( does not know about your 10.10.15.x subnet, so it won't route there, and won't NAT your connection towards the internet.

    You have a lot of possible solutions:
    - Make a static route to 10.10.15.x on all your devices, including your router, and set up NAT properly.
    - Set up a separate subnet between the core switch and router, set up the router with static routes to the existing subnets, and use your switch as the default gw for your client devices. Also set up proper NAT on the router
    or possibly a lot of more elegant solutions.


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