From: Mark Olson (molson@xxxxxxxxxx)
Date: Fri Oct 29 1999 - 17:22:20 GMT-3
Hi Brian-
See embedded comments.
Good Luck!
Mark
Brian Van Benschoten wrote:
> I'm trying to clarify between using a ARP server and just using INV ARP on a
> ATM interface
> When using SVCs you need the ARP server right ?
>
If you are talking about RFC 1577 (now obsoleted by RFC 2225), then you are 100
%
correct.
If you are talking about RFC 1483 (Multiprotocol over ATM) SVC's, then
you don't need the ARP server. However, you need a switch that is SVC capable.
The LS1010, for example, is fully capable of supporting SVCs. All you have t
o
do is make sure you have the signalling VC config'ed on the router interfaces
and
LS1010 interfaces (VPI/VCI 0/5). On the LS1010, you also need atm routing of
some sorts (either IISP, PNNI, or statics).
>
> When using PVCs I think INV ARP will resolve address on a hard ATM interface
> (no subinterface)
> If you define a subinterface I think you need to use the arp server again.
> (or perhaps just a multipoint interface)
>
> am I on the right track
I like to think of ATM as glorified Frame Relay. The issues you have on ATM
interfaces/subinterfaces are the exact same issues you have with Frame Relay
interfaces/subinterfaces. So, on ATM point-to-point subinterfaces, network
layer addresses can automagically be mapped to the corresponding VPI/VCI
via ARP (unless of course you disable it!). However, on multipoint subs and
on the physical interface, you need to statically config the mappings.
>
> Thanks
>
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 08:21:53 GMT-3