[nsp] Foundry, Cat6 interoperability?

From: Nimesh vakharia (nvakhari@clio.rad.sunysb.edu)
Date: Fri May 25 2001 - 23:20:04 EDT


I've a foundry(Bi8K) and Cat65K(MSFC2) connected back to back on a "non
trunk(CSCO)/untagged port(FDRY)" but for some reason can't seem to have
packets go across that link... I mirrored/spaned the ports on the foundry
side and here's what I get when I try to push traffic through that VLAN..

Frame, Time Stamp, DA, SA,

7 00:00:00.000224620 0180C2000000 0030A3389D5F

Type/Length Data Frame Length Status
00 26 42 42 03 00 00 00 00 00 80 00 00 B0 4A 8C F8 04 00 00 00 00 80 00
00 B0 4A 8C F8 04 80 48 00 00 14 00 02 00 0F 00 00 00 00 00 00 00 00 00 D1
BB 7D AF 64 Good Packet

The Mac Frame types is 0x0026

A quick search on google did not reveal anything... any ideas?

Nimesh.

On Fri, 25 May 2001, David Bergum wrote:

> >>>>> On Fri, 25 May 2001 15:02:00 -0400, Chris Davis <chris.davis@computerjobs.com> said:
>
> Chris> It sounded to me as if it's "evil" when used for connected networks because
> Chris> it inserts the connected network as "external" which results in incorrect
> Chris> costs and advertisements and, I suppose, general confusion when reading the
> Chris> ospf database.
>
> Chris> Don't know how to get the connected routes into OSPF if OSPF fails to pick
> Chris> them up, though.. Nobody has been clear on how to do that!
>
> Just configure them as passive interfaces in OSPF; then you don't send
> hello's out there and attmpt to find adjacencies. They will be
> redistributed in the router lsa. If you redistribute them as externals,
> then each interface is announced as a separate type 5 lsa, which is flooded
> over the whole network. Much more efficient to carry all your
> infrastructure as internals.
>
> If you are smart, and allocate all your p2p interfaces withing the same
> block, then you can use area range ospf configs on the abr to summarize all
> the /30's into one summary network lsa into area 0, saving even more db
> space.
>
> If you have a small network, though, it probably doesn't make that much
> difference.
>
> Dave.
>



This archive was generated by hypermail 2b29 : Sun Aug 04 2002 - 04:12:39 EDT