From: Chris Riling (criling@gmail.com)
Date: Wed May 09 2007 - 15:15:01 ART
The internal VLAN interface is just 192.168.1.4 on the 871, and .1 on the
1811... I will provide the public IPs if need be, but I'm not sure that need
be yet, atleast on a public forum... ;) There are no arp entries for things
not on the native VLAN, the arp entries are incomplete. When I do a "debug
arp" I see the request going out, but there is no reply...
I think the kicker in this whole thing is the fact that the ethernet
connection between the two is being provided by a LEC here that will provide
point to point ethernet circuits; the only thing I can think of is that
their equipment that hands it off is acting as a switch, and it doesn't like
anything that's tagged. If I make a different VLAN the native VLAN, that
VLAN starts working, and the one that worked before now does not... anything
stupid I'm missing, or does it sound like my speculation is correct?
On 5/9/07, Sadiq Yakasai <sadiqtanko@gmail.com> wrote:
>
> hey Chris,
>
> I tried something similar (not on the same switches) but it worked. I
> tried it on a 3550 and a 3750.
>
> Could you supply the exact IP addresses used on the vlan
> interfaces please?
>
> Can up provide your arp table entries as well please?
>
> Sadiq
>
>
> On 5/9/07, Chris Riling <criling@gmail.com> wrote:
>
> > Sorry for the CCNA level question, but I'm tired and I'm sure it happens
> > to
> > all of us at some point... Office number 1 has an 1811 with integrated 8
> >
> > port switch; Office 2 has an 871. There is a dot1q trunk between fa3 on
> > the
> > 871, and fa2 on the 1811. Both have SVI's for VLAN1 with IP's assigned
> > in
> > the same /24 (192.168.1.0/24 ). There is also a VLAN 100 existing on
> > both
> > routers, with an SVI on each, which is part of the same /29. Both VLANs
> > are
> > allowed from each side of the trunk, and when I just do the normal
> > "switchport trunk encap dot1q" and "switchport mode trunk" on each end,
> > I
> > can't ping across the trunk to either SVI. If I set the native VLAN to
> > 100
> > on each end, I can ping the SVI's and machines on VLAN 100, but I still
> > can't ping the SVI's on VLAN 1... any ideas?
> >
> > Thanks,
> > Chris
> >
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