Jeepers,
Its working, though I'm not convinced as to why !!!
Maybe it was when I swore at the bridges and told them Priscilla was on the
case that they just through the towel in ???
Regards,
Phil.
PS : I'm gonna strip it down now working backwards until I break it again.
----- Original Message -----
From: "Priscilla Oppenheimer"
To: "Philip Barker" ;
Sent: Monday, June 04, 2001 8:27 PM
Subject: Re: Transparent Bridging ? [7:7126]
> The PC shouldn't ARP for a bridge. A bridge is transparent. It should ARP
> for the end station. Something is weird with addressing and submasks.
>
> Priscilla
>
> At 03:22 PM 6/4/01, Philip Barker wrote:
> >Hi Group,
> > I vill say ziss only vonce.
> >
> >Okay, its my second attempt at trying to work out how I can bridge IP
across
> >to 2500's.
> >
> >I have 2 2500's configured with "no ip routing". 2 PC's are connected at
> >either end, i.e one to bridge 1
> >and one to bridge 2. I have a sniffer on both PC's. I am attempting to
ping
> >from one PC to the other.
> >IEEE spanning tree is applied on both bridges. The bridges are connected
via
> >a
> >serial cable and the serial
> >ports of the bridges as well as the Ethernet ports are in bridge group 1.
> >
> >I have verified spanning tree operation and one of the serial ports has
been
> >elected root port on bridge 1,
> >the other bridge is the designated bridge. Ref : Radia Perlman,
> >Interconnections p.83.
> >So far so good.
> >
> >I have configured the PC's with a default gateway to the IP address of
each
> >of
> >the bridges.
> >When I attempt to ping from one PC to the other, I can see from my
Sniffer
> >trace that the PC ARP's for
> >the MAC Address of the bridge, this ARP is successful and the PC then
sends
> >out an ICMP echo request.
> >This echo request appears to be my problem since the destination MAC
address
> >of this packet contains
> >the Ethernet Mac address of the local bridge and the local bridge
> >consequently
> >disregards the packet.
> >Should the PC have an ARP entry installed for the destination IP address
that
> >I am pinging ?
> >
> >Has anyone achieved this scenario ? or am I way off mark with my thinking
> >here.
> >
> >The reason I set this LAB up was because so many questions appear to be
being
> >asked at CCIE written level
> >akin to this setup i.e can PC 1 ping PC 2 in similar arrangement using
> >(RSRB/DLSW+/SRB etc)
> >
> >Any comments welcome.
> >
> >Regards,
> >
> >Phil.
> ________________________
>
> Priscilla Oppenheimer
> http://www.priscilla.com
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=7146&t=7126
--------------------------------------------------
FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
