From: Scott F. Robohn (sfr@xxxxxxxx)
Date: Thu Dec 09 1999 - 00:21:01 GMT-3
Brian,
CLIP uses ATM UNI signaling to establish switched virtual
connections (SVCs). To establish SVCs, the ATMARP server
and all the CLIP clients (e.g., devices with IP addresses in
the CLIP Logical IP Subnet) need unique NSAP addresses.
You can define those addresses two ways:
(1) Define the entire NSAP address, or
(2) Turn on ILMI (atm pvc 16 0 16 ilmi) to get the 13-byte
NSAP prefix from the ATM switch AND define the ESI address
(7 bytes, including the selctor byte).
If a given CLIP client doesn't have an NSAP address derived
by one these two methods, other CLIP clients can find and
setup SVCs to this client.
I'm not sure why it doesn't use a default NSAP address that
can be used for LANE, but it just seems to be the way it
works.
Scott
Brian Van Benschoten wrote:
>
> Any idea why I need to specify a ESI address ( on both sides) in order to
> make this work. If I remove the ESI addresses it stops working. I've
> tested and reloaded many times. It seems to be the case. It doesn't matter
> if I use the default MAC address as the ESI address or just put in junk
> (5555.5555.5555.00) either way it works as long as I actually put the ESI
> address in
>
> Below, R4500 is the ARP server and the 7200 is the ARP client.
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