From: nagendra kumar (nagendranainar@yahoo.co.in)
Date: Fri Mar 28 2008 - 22:30:31 ART
Hi All,
I was doing Lab 7 in Internetworkexpert rental rack and faced up with some strange issue.Inverarp between R1 and R2 is not working. I tried disbling inverse-arp and tried static entry as well, but it doesnt help. As we dont access to BB, I was not able to check the configs.
Inverse ARP from R2 to other possible DLCIs seems to work fine without any issues. I enabled debugs in R1 and got to see the below mentioned logs.
Can some please let me know if it is a problem with FR switch config?. I dont see any config issue in my setup.
The case which I raised for this issue was closed as it is a config issue. How do I go with this?.
Logs:
=====
Rack16R1(config-if)#do sh run int s0/0
Building configuration...
Current configuration : 329 bytes
!
interface Serial0/0
ip address 163.16.12.1 255.255.255.0
encapsulation frame-relay
no ip route-cache
frame-relay map ip 163.16.12.2 102 broadcast
frame-relay interface-dlci 102
no frame-relay inverse-arp IP 103
no frame-relay inverse-arp IP 104
no frame-relay inverse-arp IP 105
no frame-relay inverse-arp IP 113
end
Rack16R1(config-if)#
Rack16R1(config-if)#do sh fram pvc 102 | inc STAT
DLCI = 102, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0/0
Rack16R1(config-if)#
Rack16R1(config-if)#do sh fram map
Serial0/0 (up): ip 163.16.12.2 dlci 102(0x66,0x1860), static,
broadcast,
CISCO, status defined, active
Rack16R1(config-if)#
R2_Config:
---------
Rack16R2(config-if)#do sh run int s0/0
Building configuration...
Current configuration : 310 bytes
!
interface Serial0/0
ip address 163.16.12.2 255.255.255.0
encapsulation frame-relay
frame-relay map ip 163.16.12.1 201 broadcast
frame-relay interface-dlci 201
no frame-relay inverse-arp IP 203
no frame-relay inverse-arp IP 204
no frame-relay inverse-arp IP 205
no frame-relay inverse-arp IP 213
end
Rack16R2(config-if)#do sh fram pvc 201 | inc STAT
DLCI = 201, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0/0
Rack16R2(config-if)#
Rack16R2(config-if)#do sh fram map
Serial0/0 (up): ip 163.16.12.1 dlci 201(0xC9,0x3090), static,
broadcast,
CISCO, status defined, active
Rack16R2(config-if)#
Rack16R1#ping 163.16.12.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 163.16.12.2, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
Rack16R1#
Debug Logs:
===========
Mar 28 17:49:21.787: Serial0/0:encaps failed on broadcast for link 38(BRIDGE)
Mar 28 17:49:22.789: Serial0/0: broadcast search
Mar 28 17:49:22.789: Serial0/0:encaps failed on broadcast for link 38(BRIDGE)
Mar 28 17:49:22.789: Serial0/0: broadcast search
Mar 28 17:49:22.789: Serial0/0:encaps failed on broadcast for link 38(BRIDGE)
Mar 28 17:49:23.122: Serial0/0(i): dlci 102(0x1861), pkt encaps 0x0300 0x8000 0x0000 0x806 (ARP), datagramsize 34
Mar 28 17:49:23.122: Serial0/0: FR ARP input
Mar 28 17:49:23.122: datagramstart = 0x7400FCE, datagramsize = 34
Mar 28 17:49:23.122: FR encap = 0x18610300
Mar 28 17:49:23.122: 80 00 00 00 08 06 00 0F 08 00 02 04 00 08 00 00
Mar 28 17:49:23.126: A3 10 0C 02 30 91 00 00 00 00 01 02 00 40
Mar 28 17:49:23.126:
Mar 28 17:49:23.126: Serial0/0: frame relay INARP received
Mar 28 17:49:23.130: Serial0/0: inarp received on 102
Mar 28 17:49:23.791: Serial0/0: broadcast search
Mar 28 17:49:23.791: Serial0/0:encaps failed on broadcast for link 38(BRIDGE)
Mar 28 17:49:23.791: Serial0/0: broadcast search
Mar 28 17:49:23.791: Serial0/0:encaps failed on broadcast for link 38(BRIDGE)
Mar 28 17:49:24.792: Serial0/0: broadcast search
Mar 28 17:49:24.792: Serial0/0:encaps failed on broadcast for link 38(BRIDGE)
Mar 28 17:49:24.796: Serial0/0: broadcast search
Mar 28 17:49:24.796: Serial0/0:encaps failed on broadcast for link 38(BRIDGE)
Mar 28 17:49:24.796: Serial0/0: broadcast search
Regards,
Nagendra
---------------------------------
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