From: simon hart (simon.hart@btinternet.com)
Date: Sun Mar 13 2005 - 17:05:08 GMT-3
Kevin,
You have disabled frame relay arp on the interface and not frame relay
inverse arp. The debug output shows an inverse arp exchange and the frame
map shows the result of frame relay inverse arp.
If you do not wish to resolve dynamic map from l3 to l2 then you have to
apply the command
no frame-relay inverse-arp
The command arp frame-relay resolves a known ip address to a hardware
address (in the case of Frame Relay the DLCI).
The command frame-relay inverse-arp resolves a known local DLCI to a far end
IP address.
HTH
Simon
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
ccie
Sent: 13 March 2005 19:46
To: ccielab@groupstudy.com
Subject: no arp frame-relay
I thought that "no arp frame-relay" disabled either arp requests or arp
responses.
I did some testing see below and now I am totally confused ! With it off on
both router on each end of the same PVC it will still request and still
reply.
Any pointers ?
R1#clear fram in
R1#
R1#
R1#
R1#sh fram map
R1#sh run int s 0/0
Building configuration...
Current configuration : 125 bytes
!
interface Serial0/0
ip address 1.1.1.1 255.255.255.0
encapsulation frame-relay
clockrate 64000
no arp frame-relay
end
R1#
R1#
*Mar 1 00:13:23.827: Serial0/0(i): dlci 102(0x1861), pkt encaps 0x0300
0x8000 0x0000 0x806 (ARP), datagramsize 34
*Mar 1 00:13:23.827: Serial0/0: FR ARP input
*Mar 1 00:13:23.827: datagramstart = 0x38DD3AE, datagramsize = 34
*Mar 1 00:13:23.827: FR encap = 0x18610300
*Mar 1 00:13:23.827: 80 00 00 00 08 06 00 0F 08 00 02 04 00 08 00 00
*Mar 1 00:13:23.831: 01 01 01 02 30 91 00 00 00 00 01 02 00 00
*Mar 1 00:13:23.831:
*Mar 1 00:13:23.831: Serial0/0: frame relay INARP received
*Mar 1 00:13:23.831: FR: Sending INARP Reply on interface Serial0/0
dlci 102 for link 7(IP)
R1#
R1#sh fram map
Serial0/0 (up): ip 1.1.1.2 dlci 102(0x66,0x1860), dynamic,
broadcast,, status defined, active
R1#
######################################R2####################################
############
R2#sh run int s 0/0
Building configuration...
Current configuration : 125 bytes
!
interface Serial0/0
ip address 1.1.1.2 255.255.255.0
encapsulation frame-relay
clockrate 64000
no arp frame-relay
end
R2#
R2#
R2#
R2#clear fram in
R2#
R2#
R2#
R2#sh fram map
R2#ping 1.1.1.255
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 1.1.1.255, timeout is 2 seconds:
*Mar 1 00:13:08.031: Serial0/0: broadcast search
*Mar 1 00:13:08.031: Serial0/0:encaps failed on broadcast for link 7(IP).
*Mar 1 00:13:10.031: Serial0/0: broadcast search
*Mar 1 00:13:10.031: Serial0/0:encaps failed on broadcast for link 7(IP).
*Mar 1 00:13:12.031: Serial0/0: broadcast search
*Mar 1 00:13:12.031: Serial0/0:encaps failed on broadcast for link 7(IP).
*Mar 1 00:13:14.031: Serial0/0: broadcast search
*Mar 1 00:13:14.031: Serial0/0:encaps failed on broadcast for link 7(IP).
*Mar 1 00:13:16.031: Serial0/0: broadcast search
*Mar 1 00:13:16.031: Serial0/0:encaps failed on broadcast for link 7(IP).
R2#
R2#
R2#
R2#
R2#
*Mar 1 00:13:26.583: Serial0/0(o): dlci 201(0x3091), pkt encaps 0x0300
0x8000 0x0000 0x806 (ARP), datagramsize 34
*Mar 1 00:13:26.583: FR: Sending INARP Request on interface Serial0/0
dlci 201 for link 7(IP)
*Mar 1 00:13:26.603: broadcast dequeue
*Mar 1 00:13:26.603: Serial0/0(o):Pkt sent on dlci 201(0x3091), pkt
encaps 0x300 0x8000 0x0 0x806 (ARP), datagramsize 34
*Mar 1 00:13:26.631: Serial0/0(i): dlci 201(0x3091), pkt encaps 0x0300
0x8000 0x0000 0x806 (ARP), datagramsize 34
*Mar 1 00:13:26.631: Serial0/0: FR ARP input
*Mar 1 00:13:26.631: datagramstart = 0x370070E, datagramsize = 34
*Mar 1 00:13:26.631: FR encap = 0x30910300
*Mar 1 00:13:26.631: 80 00 00 00 08 06 00 0F 08 00 02 04 00 09 00 00
*Mar 1 00:13:26.635: 01 01 01 01 30 91 01 01 01 02 01 02 00 00
*Mar 1 00:13:26.635:
*Mar 1 00:13:26.635: Serial0/0: frame relay INARP received
R2#
R2#sh fram map
Serial0/0 (up): ip 1.1.1.1 dlci 201(0xC9,0x3090), dynamic,
broadcast,, status defined, active
R2#
R2#
Regards,
Kevin
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