From: Bob Sinclair (bob@bobsinclair.net)
Date: Fri Jan 05 2007 - 16:38:31 ART
Deji,
I see now what you are trying to do. It seems to work as advertised for me.
I turned off inverse arp for PVC 302:
R3#sh run int s1/0
Building configuration...
Current configuration : 199 bytes
!
interface Serial1/0
ip address 172.16.123.3 255.255.255.0
encapsulation frame-relay
ip ospf network broadcast
ip ospf priority 0
serial restart-delay 0
no frame-relay inverse-arp IP 302
end
Both PVCs 301 and 302 are active:
R3#sh frame pvc
PVC Statistics for interface Serial1/0 (Frame Relay DTE)
Active Inactive Deleted Static
Local 2 0 0 0
Switched 0 0 0 0
Unused 0 0 0 0
DLCI = 301, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial1/0
input pkts 21 output pkts 14 in bytes 1666
out bytes 1298 dropped pkts 0 in pkts dropped 0
out pkts dropped 0 out bytes dropped 0
in FECN pkts 0 in BECN pkts 0 out FECN pkts 0
out BECN pkts 0 in DE pkts 0 out DE pkts 0
out bcast pkts 10 out bcast bytes 810
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
pvc create time 00:01:11, last time pvc status changed 00:01:11
DLCI = 302, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial1/0
input pkts 41 output pkts 30 in bytes 3304
out bytes 2732 dropped pkts 0 in pkts dropped 0
out pkts dropped 0 out bytes dropped 0
in FECN pkts 0 in BECN pkts 0 out FECN pkts 0
out BECN pkts 0 in DE pkts 0 out DE pkts 0
out bcast pkts 30 out bcast bytes 2732
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
pvc create time 01:40:12, last time pvc status changed 01:39:53
But only PVC 301 learned a map via inverse-arp:
R3#sh frame map
Serial1/0 (up): ip 172.16.123.1 dlci 301(0x12D,0x48D0), dynamic,
broadcast,, status defined, active
HTH,
Bob Sinclair
CCIE 10427 CCSI 30427
www.netmasterclass.net
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Deji
Steve-Fagbemi
Sent: Friday, January 05, 2007 11:26 AM
To: 'Bob Sinclair'; ccielab@groupstudy.com
Subject: RE: FRAME-RELAY INVERSE-ARP
Hi
Thanks for your response.
I turned off dynamic mapping for the dlci's that I do not want to match. I
haven't turned it off for 716 and 710. I have used static mapping
temporarily but the task requests to use dynamic mapping to resolve layer 3
to layer 2.
-----Original Message-----
From: Bob Sinclair [mailto:bob@bobsinclair.net]
Sent: Friday, January 05, 2007 4:18 PM
To: deji500@hotmail.com; ccielab@groupstudy.com
Subject: RE: FRAME-RELAY INVERSE-ARP
Static and dynamic mapping are your two options for mapping layer 3 to layer
2 addresses on Frame-Relay. It seems to me you have turned off dynamic
mapping for each of your DLCIs and have not provided static maps. So I
would expect that you would get no output from "sh frame map", for example.
If you want to disable dynamic mapping via inverse arp, then you will need
to replace it with static maps. I do not know your topology, but something
like the following:
Frame map ip 156.1.0.2 712 broadcast
Frame map ip 156.1.0.3 713 broadcast
Etc
In other words, map the far side IP to the near side DLCI.
Hope that helps. For more on Frame Relay you might check out the Class on
Demand on Frame-Relay that we offer at www.netmasterclass.net.
Bob Sinclair
CCIE 10427 CCSI 30427
www.netmasterclass.net
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
deji500@hotmail.com
Sent: Thursday, January 04, 2007 7:54 PM
To: ccielab@groupstudy.com
Subject: FRAME-RELAY INVERSE-ARP
HI,
Please i need your help. Why is it that sometimes, the frame-relay inverse
arp does not help in resolving layer 3 to layer 2 connectivity?
For example, i use the following interface commands in anticipation that the
DLCI that is not used with the no frame-relay inverse-arp ip command will
resolve to layer 3:
interface Serial0/0
ip address 156.1.0.1 255.255.255.0
encapsulation frame-relay
no frame-relay inverse-arp IP 711
no frame-relay inverse-arp IP 712
no frame-relay inverse-arp IP 714
no frame-relay inverse-arp IP 715
no frame-relay inverse-arp IP 718
no frame-relay inverse-arp IP 719
frame-relay lmi-type cisco
Thanks for your help
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