[nsp] My Catalyst 2948G locked

[Stephen J. Wilcox]

On Fri, 10 Jan 2003 sthaug at nethelp.no wrote:

> > > We had lots of problems with our two 2948G-L3 boxes until we stopped
> > > using them as L2 devices, and simply ran them as hardware speed routers.
> > > 
> > > Thus our recommendation for these boxes is to remove anything L2, ie.
> > > bridging, IRB and similar stuff.
> > > 
> > > As pure L3 devices they have actually performed quite well - be we're
> > > now in the process of replacing them with 3550s.
> > 
> > Hmm.. so are you saying if you leave ports configured as switchports in the same
> > vlan that is ok L2 but when you introduce a vlan or set them to bridgegroups the
> > problems begin?
> 
> Not sure we're talking the same language here. The "switchport"
> command doesn't exist on the 2948G-L3. Our interfaces are configured
> either as pure L3 ports, eg.

my mistake, wrong L3 switch  :)

> 
> interface FastEthernet4
>  ip address a.b.c.d 255.255.255.240
> 
> or as VLAN trunks talking to an (L2) switch, with the IP addresses
> on subinterfaces, eg.
> 
> interface GigabitEthernet50
>  no ip address
> !
> interface GigabitEthernet50.2
>  encapsulation isl 2
>  ip address e.f.g.h 255.255.255.224
> 
> Thus this box only does L3 routing, no L2 bridging. And the "pure
> L3" configuration has been the key to stability for us. YMMV.
> 
> Steinar Haug, Nethelp consulting, sthaug at nethelp.no
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