From: Brian Dennis (bdennis@internetworkexpert.com)
Date: Sun Oct 22 2006 - 18:03:33 ART
Comments inline:
1. If I disable fra inverse-arp on an interface does it effect sub
interfaces at all ?
No.
2. Similarly should I disable inarp if I am asked to not to use it on a
sub
interface ?
Do whatever is needed to meet the requirements of the task. The only
time Frame Relay inverse ARP is used under a multipoint subinterface is
when the "frame-relay interface-dlci" command is applied. If a Frame
Relay map statement is used for IP then inverse ARP is disabled for IP
on that DLCI. The logic is that if you have already statically mapped
layer 3 to layer 2 why would the router still need inverse ARP?
3. Is there anything to do with inarp on p-to-p interfaces ?
Manual or dynamic layer 3 to layer 2 mappings are not needed on P2P
subinterfaces. Since there can only be one layer 2 address (DLCI) all
layer 3 addresses are automatically mapped to the layer 2 address. You
can verify this with the "show frame-relay map" command" As a side note
a P2P will still response to inverse ARP requests from a remote router.
4. Finally as far as I observe no frame inverse-arp command only disable
the
processing (and mapping) of incoming arp responses, is there a way to
stop
sending arp responses ?
You appear to have this backwards. The "no frame inverse-arp" command
stops the sending of inverse ARP requests. Currently in the IOS there
isn't a Frame Relay command that will stop the router from receiving and
processing inverse ARP requests.
HTH,
Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security)
bdennis@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
Toll Free: 877-224-8987
Direct: 775-745-6404 (Outside the US and Canada)
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Cagri Yucel
Sent: Sunday, October 22, 2006 1:01 PM
To: Group study
Subject: Good old inverse arp
A few questions I am confused about:
1. If I disable fra inverse-arp on an interface does it effect sub
interfaces at all ?
2. Similarly should I disable inarp if I am asked to not to use it on a
sub
interface ?
3. Is there anything to do with inarp on p-to-p interfaces ?
4. Finally as far as I observe no frame inverse-arp command only disable
the
processing (and mapping) of incoming arp responses, is there a way to
stop
sending arp responses ?
Many thanks
-- -cagri
This archive was generated by hypermail 2.1.4 : Wed Nov 01 2006 - 07:29:06 ART