topic Re: Sub-Interfaces? in Switches, Hubs, and Modems

Sub-Interfaces?

Shaun Neighbour — Wed, 04 Feb 2009 10:11:22 GMT

Hi all

Yet more noob questions :)

I want to do some InterVLAN Routing. I currently have two server rooms, each wrunning off their own Procurve 3400cl switch with a 4GB trunk between them. The rest of the switches branch off from them.

I need to create a sub-interface and so far have only found this procurve specific documentation;
ftp://ftp.hp.com/pub/networking/software/ProCurve-SR-InterVLAN-Config-Guide.pdf

I've never tried anything like this before, so have a few questions;

1; In the config guide, it says to enter Ethernet Configuration mode by typing "interface ethernet 0/2" - What does "0/2" refer to?

2; If the "0/2" refers to a physical port on the switch, does that mean that port cannot be used for anything else? Does the port have to be patched back into the switch?

3; Should I divide the load between my two 3400cl's, and is there any way of adding any kind of fault tolerance?

4; Am I missing anything?

Thanks for your help.

Shaun

Re: Sub-Interfaces?

EckerA — Wed, 04 Feb 2009 11:27:01 GMT

hi shaun,
the guide you are refering to is for a different device i guess.

take a look here:
http://h40060.www4.hp.com/procurve/includes/manuals/index.php?cc=de&lc=de&content=3400-4200-5300-6400-ChapterFiles#Config

hth
alex

Re: Sub-Interfaces?

Shaun Neighbour — Wed, 04 Feb 2009 16:04:52 GMT

Doesn't look like the 3400cl supports sub interfaces. I'll apply my ACL's on a per-port basis instead.

Re: Sub-Interfaces?

Pieter 't Hart — Thu, 05 Feb 2009 12:01:11 GMT

what do you aim to achieve?

on the 3400 you probably can assign an ip-adresses to vlan's.
together with "tagging" multiple vlans to a single port, you may accomplish the thing you wanted without using subinterfaces?
you may look at every vlan itself as a "subinterface".