From: Jonathan (nomad@gfoyle.org)
Date: Sun Dec 14 2003 - 12:37:21 GMT-3
Ozgur wrote:
i dont think no arp frame-relay ever does something.
i did not see it preventing the router from ever replying to inverse-arp
requestes.
so i dont think it will spoil anyting with auto-install,
did anybody seen it working?
= = = =
It's hard to prove it does absolutely nothing. But some initial
experiments seem to indicate that you are correct: the command has no
affect on frame-relay inverse ARP. See below for details.
Does anyone on the list have some insight on the use (if any) of the
"arp frame-relay" command?
#####################
INITIAL CONFIG
#####################
R5#sh run int s1/0.25
Building configuration...
Current configuration : 113 bytes
!
interface Serial1/0.25 multipoint
ip address 138.10.25.1 255.255.255.252
frame-relay interface-dlci 502
end
R5#debug frame-relay packet
Frame Relay packet debugging is on
R5#clear frame-relay inarp
R5#sh frame map
R5#
*Mar 1 00:57:20.379: Serial1/0(i): dlci 502(0x7C61), pkt type 0xFEFE,
datagramsize 1505
R5#
*Mar 1 00:57:28.179: Serial1/0(i): dlci 502(0x7C61), pkt type 0xFEFE,
datagramsize 1505
R5#
*Mar 1 00:57:31.991: Serial1/0.25(o): dlci 502(0x7C61), pkt encaps
0x0300 0x8000 0x0000 0x806 (ARP), datagramsize 34
*Mar 1 00:57:31.991: FR: Sending INARP Request on interface
Serial1/0.25 dlci 502 for link 7(IP)
*Mar 1 00:57:32.067: broadcast dequeue
*Mar 1 00:57:32.067: Serial1/0.25(o):Pkt sent on dlci 502(0x7C61), pkt
encaps 0x300 0x8000 0x0 0x806 (ARP), datagramsize 34
*Mar 1 00:57:32.087: Serial1/0(i): dlci 502(0x7C61), pkt encaps 0x0300
0x8000 0x0000 0x806 (ARP), datagramsize 34
*Mar 1 00:57:32.087: Serial1/0.25: frame relay INARP received
R5#
*Mar 1 00:57:36.487: Serial1/0(i): dlci 502(0x7C61), pkt type 0xFEFE,
datagramsize 1505
#####################
NO ARP FRAME-RELAY
#####################
Note in the output that INARP requests were sent and received, despite
the "no arp frame-relay" command.
R5#conf t
Enter configuration commands, one per line. End with CNTL/Z.
R5(config)#in s1/0.25
R5(config-subif)#no arp frame-relay
R5(config-subif)#^Z
R5#
*Mar 1 01:00:39.431: %SYS-5-CONFIG_I: Configured from console by
console
R5#clear frame-relay inarp
*Mar 1 01:01:40.711: Serial1/0(i): dlci 502(0x7C61), pkt type 0xFEFE,
datagramsize 1505
R5#
*Mar 1 01:01:49.811: Serial1/0(i): dlci 502(0x7C61), pkt type 0xFEFE,
datagramsize 1505
R5#
*Mar 1 01:01:57.511: Serial1/0(i): dlci 502(0x7C61), pkt type 0xFEFE,
datagramsize 1505
R5#
*Mar 1 01:02:05.111: Serial1/0(i): dlci 502(0x7C61), pkt type 0xFEFE,
datagramsize 1505
R5#
*Mar 1 01:02:14.711: Serial1/0(i): dlci 502(0x7C61), pkt type 0xFEFE,
datagramsize 1505
R5#
*Mar 1 01:02:22.411: Serial1/0(i): dlci 502(0x7C61), pkt type 0xFEFE,
datagramsize 1505
R5#sh frame-relay map
R5#
*Mar 1 01:02:31.943: Serial1/0(i): dlci 502(0x7C61), pkt type 0xFEFE,
datagramsize 1505
*Mar 1 01:02:31.991: Serial1/0.25(o): dlci 502(0x7C61), pkt encaps
0x0300 0x8000 0x0000 0x806 (ARP), datagramsize 34
*Mar 1 01:02:31.991: FR: Sending INARP Request on interface
Serial1/0.25 dlci 502 for link 7(IP)
*Mar 1 01:02:32.059: broadcast dequeue
*Mar 1 01:02:32.059: Serial1/0.25(o):Pkt sent on dlci 502(0x7C61), pkt
encaps 0x300 0x8000 0x0 0x806 (ARP), datagramsize 34
*Mar 1 01:02:32.183: Serial1/0(i): dlci 502(0x7C61), pkt encaps 0x0300
0x8000 0x0000 0x806 (ARP), datagramsize 34
*Mar 1 01:02:32.183: Serial1/0.25: frame relay INARP received
R5#
*Mar 1 01:02:40.655: Serial1/0(i): dlci 502(0x7C61), pkt type 0xFEFE,
datagramsize 1505
#####################
NO FRAME-RELAY INVERSE-ARP
#####################
Inverse ARP frames are not sent or received with "no frame-relay
inverse-arp" configured.
R5#conf t
Enter configuration commands, one per line. End with CNTL/Z.
R5(config)#int s1/0.25
R5(config-subif)#no frame-relay inverse-arp
R5(config-subif)#^Z
R5#
*Mar 1 01:03:08.355: Serial1/0(i): dlci 502(0x7C61), pkt type 0xFEFE,
datagramsize 1505
R5#
*Mar 1 01:03:08.839: %SYS-5-CONFIG_I: Configured from console by
console
R5#clear frame-relay inarp
R5#
*Mar 1 01:03:26.755: Serial1/0(i): dlci 502(0x7C61), pkt type 0xFEFE,
datagramsize 1505
R5#
*Mar 1 01:03:35.671: Serial1/0(i): dlci 502(0x7C61), pkt type 0xFEFE,
datagramsize 1505
R5#
*Mar 1 01:03:44.871: Serial1/0(i): dlci 502(0x7C61), pkt type 0xFEFE,
datagramsize 1505
R5#
*Mar 1 01:03:54.571: Serial1/0(i): dlci 502(0x7C61), pkt type 0xFEFE,
datagramsize 1505
R5#
*Mar 1 01:04:02.775: Serial1/0(i): dlci 502(0x7C61), pkt type 0xFEFE,
datagramsize 1505
R5#
*Mar 1 01:04:10.375: Serial1/0(i): dlci 502(0x7C61), pkt type 0xFEFE,
datagramsize 1505
R5#
*Mar 1 01:04:18.975: Serial1/0(i): dlci 502(0x7C61), pkt type 0xFEFE,
datagramsize 1505
R5#
*Mar 1 01:04:28.975: Serial1/0(i): dlci 502(0x7C61), pkt type 0xFEFE,
datagramsize 1505
R5#sh frame-relay map
R5#
*Mar 1 01:04:36.675: Serial1/0(i): dlci 502(0x7C61), pkt type 0xFEFE,
datagramsize 1505
R5#
*Mar 1 01:04:45.075: Serial1/0(i): dlci 502(0x7C61), pkt type 0xFEFE,
datagramsize 1505
R5#
*Mar 1 01:04:53.775: Serial1/0(i): dlci 502(0x7C61), pkt type 0xFEFE,
datagramsize 1505
R5#
*Mar 1 01:05:02.975: Serial1/0(i): dlci 502(0x7C61), pkt type 0xFEFE,
datagramsize 1505
R5#sh frame-relay map
R5#u all
All possible debugging has been turned off
R5#sh run int s1/0.25
Building configuration...
Current configuration : 161 bytes
!
interface Serial1/0.25 multipoint
ip address 138.10.25.1 255.255.255.252
no arp frame-relay
frame-relay interface-dlci 502
no frame-relay inverse-arp
end
R5#
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