From: Aaron DuShey (adushey@xxxxxxxxx)
Date: Tue Apr 18 2000 - 14:21:26 GMT-3
correction-point-to-multipoint in the ospf network type
Aaron DuShey-GE Capital IT Solutions
Consulting Systems Engineer
(760)500-1707
CCNP - CNX - MCSE - CNE - Citrix Specialist - ASE- HP Star
-----Original Message-----
From: Aaron DuShey [mailto:adushey@yahoo.com]
Sent: Tuesday, April 18, 2000 10:19 AM
To: 'Roger Wang'; 'ccielab@groupstudy.com'
Subject: RE: FR Point-to-Point Sub-interfaces
point to point subinterfaces address a number of things
-split horizon problem with NBMA and D.V. routing protocols in a partial
mesh
-map statement requirement from spokes in a partial mesh
-Possible OSPF network type mismatches causing adjancency issues (this can
happen using sub-interfaces also, but only if in a mixed environment i.e.
physical interfaces at hub and sub-interfaces at spoke)OSPF has 3 network
types- broadcast, non-broadcast and point-multipoint. Defaults are different
depending on what interfaces you use. You can change the defaults using ip
ospf network command.
there are more issues, but these are the major ones that are standing out in
mind right now-
I recommend reading up on this in the Routing TCP/IP book by Doyle or
Caslows Cisco Certification book.
Aaron DuShey-GE Capital Net Solutions
CCNP - CNX - MCSE - CNE - Citrix Specialist - ASE- HP Star
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Roger Wang
Sent: Saturday, April 15, 2000 5:37 PM
To: ccielab@groupstudy.com
Subject: FR Point-to-Point Sub-interfaces
I know I'm missing something obvious, but I can't seem to figure out why
each FR point-to-point sub-interface must be on a different (sub)network?
The only thing I can think of is so that the router can route packets
between them, but I know I'm missing something more important. Can someone
please explain?
Thanks,
Rog
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