[c-nsp] problems migrating to a 3550

[Doug McIntyre]

On Wed, Feb 03, 2010 at 05:58:12PM +0100, j.vaningenschenau at utwente.nl wrote:
> > Things in vlan2 on the HP switch can reach the IP address of the 3550
> > on 
> > vlan2 just fine, vlan2 is solid.
> > 
> > However, things in vlan1 on the HP switch cannot reach the IP of the
> > 3550 
> > on vlan1, and anything attached to 3550 on vlan1 ports cannot reach
> > anything on vlan1 on the HP switch.
> 
> You could try either:
> 
> * Setting VLAN 1 as untagged on the Procurve side, or
> * configuring "switchport trunk native vlan tag" on the Cisco side.
> 
> (or avoid using VLAN 1, which is what we always do between Cisco and HP
> switches)


Cisco itself recommends against using VLAN 1 in all configs beyond the
basic setup as well (in some SRND). Mixing up traffic on VLAN1 between
any vendor is a crapshot, highly recommended to avoid VLAN1.