From: Brian Dennis (bdennis@internetworkexpert.com)
Date: Sun Mar 06 2005 - 16:34:49 GMT-3
Scott,
Are you 100% sure? See below:
Rack1R1#sho run int s0/0
Building configuration...
Current configuration : 69 bytes
!
interface Serial0/0
no ip address
encapsulation frame-relay
end
Rack1R1#sho run int s0/0.1
Building configuration...
Current configuration : 107 bytes
!
interface Serial0/0.1 multipoint
ip address 10.1.1.1 255.255.255.0
frame-relay interface-dlci 102
end
Rack1R1#sho fram map
Serial0/0.1 (up): ip 10.1.1.2 dlci 102(0x66,0x1860), dynamic,
broadcast,, status defined, active
Rack1R1#
Rack1R2#sho run int s0/0
Building configuration...
Current configuration : 69 bytes
!
interface Serial0/0
no ip address
encapsulation frame-relay
end
Rack1R2#sho run int s0/0.1
Building configuration...
Current configuration : 107 bytes
!
interface Serial0/0.1 multipoint
ip address 10.1.1.2 255.255.255.0
frame-relay interface-dlci 201
end
Rack1R2#sho fram map
Serial0/0.1 (up): ip 10.1.1.1 dlci 201(0xC9,0x3090), dynamic,
broadcast,, status defined, active
Rack1R2#
Rack1R2#deb fram pa
Frame Relay packet debugging is on
Rack1R2#
*Mar 1 02:31:13.056: Serial0/0.1(o): dlci 201(0x3091), pkt encaps
0x0300 0x8000 0x0000 0x806 (ARP), datagramsize 34
*Mar 1 02:31:13.056: FR: Sending INARP Request on interface Serial0/0.1
dlci 201 for link 7(IP)
*Mar 1 02:31:13.144: broadcast dequeue
*Mar 1 02:31:13.144: Serial0/0.1(o):Pkt sent on dlci 201(0x3091), pkt
encaps 0x300 0x8000 0x0 0x806 (ARP), datagramsize 34
*Mar 1 02:31:13.148: Serial0/0(i): dlci 201(0x3091), pkt encaps 0x0300
0x8000 0x0000 0x806 (ARP), datagramsize 34
*Mar 1 02:31:13.148: Serial0/0.1: frame relay INARP received;
I think that your answer should be rephrased as "Actually, inverse-arp
is automatically turned off on Point-to-Point subinterfaces since layer
3 to layer 2 mapping is not needed. The only caveat is that it will
RESPOND to an inverse arp if one is received, but otherwise will not
generate its own on a Point-to-Point subinterface"
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
Scott Morris
Sent: Sunday, March 06, 2005 11:13 AM
To: 'marvin greenlee'; 'Roy Dempsey'; 'Cisco certification'
Subject: RE: Question about inverse-arp [bcc][faked-from][bayes]
Actually, inverse-arp is automatically turned off on subinterfaces. The
only caveat is that it will RESPOND to an inverse arp if one is
received,
but otherwise will not generate its own...
HTH,
Scott
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
marvin greenlee
Sent: Sunday, March 06, 2005 12:50 PM
To: 'Roy Dempsey'; Cisco certification
Subject: RE: Question about inverse-arp [bcc][faked-from][bayes]
It needs to be disabled wherever you have IP addresses. If you just
have
addressing on the physical interface, it just needs to be disabled on
the
physical interface. If you have addressing just on subinterfaces, it
needs
to be disabled on the subinterfaces. If you have addressing on both the
physical interface and subinterfaces, it needs to be disabled on both.
Marvin Greenlee, CCIE#12237, CCSI# 30483 Network Learning Inc
marvin@ccbootcamp.com www.ccbootcamp.com (Cisco Training)
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Roy
Dempsey
Sent: Sunday, March 06, 2005 6:23 AM
To: Cisco certification
Subject: Question about inverse-arp [bcc][faked-from][bayes]
Importance: Low
Quick question on frame relay and inverse-arp...
If you're asked not to rely on dynamic resolution, and you are using p2p
or
p2m subinterfaces, can you disable it on the physical interface alone
or do
you need to disable it on both the physical and subinterfaces? Can't
check
it out at the moment myself ....
Thanks
Roy
This archive was generated by hypermail 2.1.4 : Sun Apr 03 2005 - 17:56:42 GMT-3