When you are using 802.1q
DO NOT use the management VLAN (I mean VLAN 1)
Vlan 1 on the ISL trunks is used only for management (as CISCO says)
and Vlan 1 is the default Trunk Vlan on 802.1q.
If you use VLAN 1 on the 802.1q you will find out that big packets (> 1482 )
would not be processed correct !!
Regards
Elias
P.S.
I have found out this with the hard way. After 4 hours trying to make the Cat
4000
to switch big packets on the VLAN 1, I have found out that VLAN 1 when it is
used for trunking connections it can not switch big packets.
----- Original Message -----
From: "Brian" <[EMAIL PROTECTED]>
To: "Ben Hockenhull" <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Sent: Monday, December 04, 2000 12:42 AM
Subject: Re: 802.1q between HP and Cisco
>
> Don't use vlan 1, the native vlan, for trunking to the 4000. Use vlans
> 2-9 instead of 1-8
>
> On Sun, 3 Dec 2000, Ben Hockenhull wrote:
>
> > Folks,
> >
> > I have a Cat6509 here that I'm trying to configure to do 802.1q VLAN
> > trunking between itself and an HP ProCurve 4000M switch.
> >
> > I've run into a problem, though. I have 8 vlans configured on both
> > switches, 802.1q ID 1-8. The vlan *names* on either end match except for
> > the first vlan. On the HP, it's 'vlan1'. On the Cat, it's 'default'
> > because it cannot be changed, which is annoying. The vlan IDs match
> > throughout.
> >
> > I can ping devices on any of the vlans except for vlan 1, from the Cat. I
> > cannot get any connectivity from the Cat to the HP on vlan1. If I disable
> > tagged vlans on the HP, I can get ping to vlan1, even while 802.1q is
> > enabled on the Cat.
> >
> > Just for fun, I changed the name of vlan1 on the HP to 'default' and it
> > had no effect, so it doesn't seem to be some weirdness with plain english
> > identifiers.
> >
> > Now for the really weird part. If I configure the trunk on the HP to be
> > untagged on vlan1 and tagged on all other vlans, I seem to get
> > connectivity to all vlans from the Cat.
> >
> > Is there something inherently funky about vlan 1 on the cisco stuff? It's
> > really odd that all the other vlans work if configured to be tagged at
> > both ends, and the config for all 8 vlans is the same at both ends.
> >
> > This is driving me crazy.
> >
> > Ben
> >
> > --
> > Ben Hockenhull
> > [EMAIL PROTECTED]
> >
> > _________________________________
> > FAQ, list archives, and subscription info:
http://www.groupstudy.com/list/cisco.html
> > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
> >
>
> -----------------------------------------------
> Brian Feeny, CCNP, CCDP [EMAIL PROTECTED]
> Network Administrator
> ShreveNet Inc. (ASN 11881)
>
> _________________________________
> FAQ, list archives, and subscription info:
http://www.groupstudy.com/list/cisco.html
> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
>
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