04-01-2003 09:13 AM - edited 03-02-2019 06:18 AM
any and all suggestions welcomed.
I have a remote site on a 1721 router connected to two core routers both 3660's by frame relay pvc's. One link is suppost to be a redundant link to the other. The two links are in two seperate subnets.
I can traceroute and or telnet from the core to the remote router but I cannot ping.
I can also traceroute/telnet from the remote router to the core and beyond but I can't ping.
I can ping from a pc in the core to either of the remote interfaces but a traceroute fails.
The ospf is not being shared and the ip ospf neighbor command say the state is EXSTART or down all though the neighbor id is correct.
I am happy to supply config's answer questions etc
Tom Redmond
04-01-2003 09:35 AM
I would like to analyze the configs at either ends..
04-02-2003 12:52 AM
they are posted in reply to another response below
Thanks
Tom
04-01-2003 09:37 AM
Tom,
1. Your OSPF issue might very well be mismatched interface types (timers). Ensure all of your interfaces are same type (point to point (or point to multipoint). (debug ip ospf adjacency on your routers will tell you if you have mismatched interface types (timers))
2. Need to see your frame mapping statements to tell on the ping / traceroute issue.
Hope this helps you,
Don
04-01-2003 10:35 AM
1. all interfaces are point to point
2.the mapping statements are
Serial0.16 (up): point-to-point dlci, dlci 16(0x10,0x400), broadcast
status defined, active
Serial0.17 (up): point-to-point dlci, dlci 17(0x11,0x410), broadcast
status defined, active
the mapping statements from the two core routers are huge but the equivalent dlci's are broadcast status defined, active as above.
hope this sheds some light.
Tom
04-01-2003 09:44 AM
Tom,
In your remote router, enter "show frame-relay pvc" and verify that your PVCs are up, and that they have been up for a long time. If they have not been up for a while, the PVCs are probably bouncing, which would explain how the OSPF neighbor state never gets beyond EXSTART. Enter the command "show frame-relay lmi" and see if you have a significant number of status timeouts. Either bouncing PVCs or LMI status timeouts can indicate a bad connection between your router and the frame relay switch. You can check your portion with a show interface command for your frame relay interface. Look at the error count. Repeat the command a number of times to see if the errors are incrementing. Errors on your interface can explain bouncing PVCs and LMI status timeouts. If you have a clean line and your PVCs are not staying up or you have LMI status timeouts, there is a problem in your frame relay provider's network.
Also, in the core routers and in the remote router, look at the output from the "show frame-relay map" command and make sure that you have the IP address-to-DLCI mappings that you expect.
I won't point you towards the connections at the core, since they are both behaving the same way, and I assume that those routers have working PVCs to other locations on the same interfaces.
That should give you a start. Good luck.
Mark
04-01-2003 10:45 AM
the output from the remote router of the various commands you suggested are posted below. I think the frame-relay side of thihgs is ok but......
I do have multiple other connections at the core that are fine.
bar#sh frame-relay pvc
PVC Statistics for interface Serial0 (Frame Relay DTE)
Active Inactive Deleted Static
Local 2 0 0 0
Switched 0 0 0 0
Unused 0 0 0 0
DLCI = 16, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0.16
input pkts 3850 output pkts 3015 in bytes 210768
out bytes 190896 dropped pkts 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 2947 out bcast bytes 185696
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
pvc create time 04:05:50, last time pvc status changed 04:05:50
DLCI = 17, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0.17
input pkts 1799 output pkts 4793 in bytes 118261
out bytes 316323 dropped pkts 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 2922 out bcast bytes 184436
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
pvc create time 04:05:51, last time pvc status changed 04:05:51
bar#sh fra
bar#sh frame-relay lmi
LMI Statistics for interface Serial0 (Frame Relay DTE) LMI TYPE = ANSI
Invalid Unnumbered info 0 Invalid Prot Disc 0
Invalid dummy Call Ref 0 Invalid Msg Type 0
Invalid Status Message 0 Invalid Lock Shift 0
Invalid Information ID 0 Invalid Report IE Len 0
Invalid Report Request 0 Invalid Keep IE Len 0
Num Status Enq. Sent 1477 Num Status msgs Rcvd 1477
Num Update Status Rcvd 0 Num Status Timeouts 0
bar#sh frame
bar#sh frame-relay map
Serial0.16 (up): point-to-point dlci, dlci 16(0x10,0x400), broadcast
status defined, active
Serial0.17 (up): point-to-point dlci, dlci 17(0x11,0x410), broadcast
status defined, active
04-01-2003 11:14 AM
Tom,
How about "show interface s0"?
Mark
04-01-2003 12:04 PM
here you go hope it helps
Bar#sh int s0
Serial0 is up, line protocol is up
Hardware is PowerQUICC Serial
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation FRAME-RELAY, loopback not set
Keepalive set (10 sec)
LMI enq sent 1974, LMI stat recvd 1974, LMI upd recvd 0, DTE LMI up
LMI enq recvd 0, LMI stat sent 0, LMI upd sent 0
LMI DLCI 0 LMI type is ANSI Annex D frame relay DTE
Broadcast queue 0/64, broadcasts sent/dropped 7929/0, interface broadcasts 792
9
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 05:29:04
Queueing strategy: fifo
Output queue 0/40, 0 drops; input queue 0/75, 0 drops
5 minute input rate 2000 bits/sec, 3 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
14916 packets input, 3721160 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
1 input errors, 0 CRC, 1 frame, 0 overrun, 0 ignored, 0 abort
11918 packets output, 670074 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up
Bar#
04-01-2003 12:46 PM
Tom,
All of this looks clean. Did you do the debugging that Don recommended earlier?
Mark
04-02-2003 12:51 AM
As DONEWALD suggested I used the command DEBUG IP OSPF ADJ, however nothing happened i.e. no messages.
I've included the relevent configs for the three routers involved below. Hopefully someone can spot the problem.
Tom Redmond
Remote router configs
**********************
!
version 12.2
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Bar
!
**** password bit
ip subnet-zero
no ip domain-lookup
!
!
!
!
interface Loopback0
ip address 84.84.84.84 255.255.255.255
!
interface FastEthernet0
ip address 52.72.31.1 255.255.128.0
speed auto
half-duplex
no cdp enable
!
interface Serial0
no ip address
ip helper-address 52.200.127.255
ip directed-broadcast
encapsulation frame-relay
no fair-queue
frame-relay lmi-type ansi
!
interface Serial0.16 point-to-point
description Primary PVC to HQ
bandwidth 64
ip address 52.5.84.1 255.255.255.128
ip directed-broadcast
ip ospf authentication-key cisco
no cdp enable
frame-relay class data
frame-relay interface-dlci 16
!
interface Serial0.17 point-to-point
description Backup link to Long
bandwidth 64
ip address 52.5.84.129 255.255.255.128
ip directed-broadcast
ip ospf authentication-key cisco
ip ospf cost 4000
no cdp enable
frame-relay class data
frame-relay interface-dlci 17
!
router ospf 100
log-adjacency-changes
area 0.0.0.84 authentication
area 0.0.0.84 stub
area 0.0.0.100 authentication
area 0.0.0.100 nssa
redistribute connected metric 2000 metric-type 1 subnets
network 52.5.84.1 0.0.0.0 area 0.0.0.84
network 52.5.84.129 0.0.0.0 area 0.0.0.100
network 52.72.31.1 0.0.0.0 area 0.0.0.84
!
ip classless
ip forward-protocol udp 1604
ip route 0.0.0.0 0.0.0.0 52.5.84.130
no ip http server
!
!
!
map-class frame-relay data
no frame-relay adaptive-shaping
frame-relay cir 48000
frame-relay bc 48000
frame-relay be 16000
frame-relay mincir 48000
no cdp run
snmp-server community public RO
snmp-server community private RW
snmp-server host 52.200.91.65 private
!
**** password bit ****
!
end
***************
hq core router config
***************
!
version 12.2
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname hq
!
****************
loads of stuff about isdn left out
****************
memory-size iomem 10
ip subnet-zero
!
!
no ip domain-lookup
!
!
interface Loopback0
ip address 1.1.1.1 255.255.255.255
!
interface FastEthernet0/0
description LAN PORT
ip address 52.200.33.7 255.255.128.0
ip helper-address 52.200.127.255
no ip redirects
ip directed-broadcast
ip ospf authentication-key cisco
duplex auto
speed auto
no cdp enable
standby 1 ip 52.200.33.9
standby 1 priority 110
standby 1 preempt
!
interface Serial1/0
description main frame relay bearer
no ip address
encapsulation frame-relay
no ip mroute-cache
no fair-queue
serial restart_delay 0
frame-relay lmi-type ansi
!
************************
approx 30 other sub interfaces left out
************************
!
interface Serial1/0.134 point-to-point
description Primary PVC to Bar
bandwidth 64
ip address 52.5.84.2 255.255.255.128
ip helper-address 52.200.127.255
ip directed-broadcast
ip ospf authentication-key cisco
no ip mroute-cache
no cdp enable
frame-relay class data
frame-relay interface-dlci 34
frame-relay payload-compression packet-by-packet
interface Serial1/1
no ip address
shutdown
serial restart_delay 0
no cdp enable
!
interface Serial1/2
no ip address
shutdown
serial restart_delay 0
no cdp enable
!
interface Serial1/3
no ip address
shutdown
serial restart_delay 0
no cdp enable
*************************
load of dialer definitions left out
*************************
!
!
router ospf 100
log-adjacency-changes
area 0.0.0.0 authentication
area 0.0.0.84 authentication
area 0.0.0.84 stub
area 0.0.0.100 authentication
area 0.0.0.100 nssa default-information-originate
network 52.5.84.2 0.0.0.0 area 0.0.0.84
network 52.5.84.128 0.0.0.127 area 0.0.0.100
network 52.200.33.7 0.0.0.0 area 0.0.0.0
!
ip classless
ip forward-protocol udp 1604
ip route 0.0.0.0 0.0.0.0 52.200.33.1
no ip http server
ip pim bidir-enable
!
!
!
map-class frame-relay data
no frame-relay adaptive-shaping
frame-relay cir 48000
frame-relay bc 48000
frame-relay be 16000
frame-relay mincir 48000
dialer-list 1 protocol ip permit
no cdp run
snmp-server engineID local 00000009020000049A37F6A0
snmp-server community public RO
snmp-server community private RW
snmp-server host 52.200.91.65 private
!
***********
password bit
***********
!
!
end
*************
2nd core router config
*************
!
version 12.2
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Long
!
***********
password bit
***********
!
memory-size iomem 10
ip subnet-zero
!
!
!
!
!
!
interface Loopback0
ip address 2.2.2.2 255.255.255.255
!
interface FastEthernet0/0
ip address 52.200.33.8 255.255.128.0
ip helper-address 52.200.127.255
no ip redirects
ip directed-broadcast
ip ospf authentication-key cisco
duplex auto
speed auto
no cdp enable
standby 1 ip 52.200.33.9
standby 1 preempt
!
interface Serial1/0
no ip address
encapsulation frame-relay
no ip mroute-cache
no fair-queue
serial restart_delay 0
frame-relay lmi-type ansi
!
***************
sub interfaces missed out
***************
!
interface Serial1/0.148 point-to-point
description Primary PVC to Bar
bandwidth 64
ip address 52.5.84.130 255.255.255.128
ip helper-address 52.200.127.255
ip directed-broadcast
ip ospf authentication-key cisco
ip ospf cost 4000
no ip mroute-cache
no cdp enable
frame-relay class data
frame-relay interface-dlci 48
frame-relay payload-compression packet-by-packet
interface Serial1/1
no ip address
shutdown
serial restart_delay 0
no cdp enable
!
interface Serial1/2
no ip address
shutdown
serial restart_delay 0
no cdp enable
!
interface Serial1/3
no ip address
shutdown
serial restart_delay 0
no cdp enable
!
router ospf 100
log-adjacency-changes
area 0.0.0.0 authentication
area 0.0.0.84 authentication
area 0.0.0.84 stub
area 0.0.0.100 authentication
area 0.0.0.100 nssa default-information-originate
network 52.5.84.0 0.0.0.127 area 0.0.0.84
network 52.5.84.130 0.0.0.0 area 0.0.0.100
network 52.200.33.8 0.0.0.0 area 0.0.0.0
!
ip classless
ip forward-protocol udp 1604
ip route 0.0.0.0 0.0.0.0 52.200.33.1
no ip http server
ip pim bidir-enable
!
!
!
map-class frame-relay data
no frame-relay adaptive-shaping
frame-relay cir 48000
frame-relay bc 48000
frame-relay be 16000
frame-relay mincir 48000
!
map-class frame-relay 3com
no frame-relay adaptive-shaping
frame-relay cir 64000
frame-relay bc 64000
frame-relay be 0
frame-relay mincir 64000
no cdp run
snmp-server engineID local 00000009020000049A134B90
snmp-server community private RW
snmp-server community public RO
snmp-server host 52.200.91.65 private
!
***************************
password bit
***************************
!
end
\f1
}
04-02-2003 02:01 AM
re my message above I forgot to send output to terminal DOH! here is the result of the DEBUG IP OSPF ADJ
19:17:32: OSPF: Send DBD to 2.2.2.2 on Serial0.17 seq 0x2CC opt 0x48 flag 0x7 len 32
19:17:32: OSPF: Retransmitting DBD to 2.2.2.2 on Serial0.17 [1]
19:17:33: OSPF: Rcv hello from 1.1.1.1 area 0.0.0.84 from Serial0.16 52.5.84.2
19:17:33: OSPF: End of hello processing
19:17:33: OSPF: Send DBD to 1.1.1.1 on Serial0.16 seq 0x1954 opt 0x40 flag 0x7 len 32
19:17:33: OSPF: Retransmitting DBD to 1.1.1.1 on Serial0.16 [4]
19:17:37: OSPF: Send DBD to 2.2.2.2 on Serial0.17 seq 0x2CC opt 0x48 flag 0x7 len 32
19:17:37: OSPF: Retransmitting DBD to 2.2.2.2 on Serial0.17 [2]
19:17:37: OSPF: Rcv hello from 2.2.2.2 area 0.0.0.100 from Serial0.17 52.5.84.130
19:17:37: OSPF: End of hello processing
********
many repeats of above
********
19:18:23: OSPF: Killing nbr 1.1.1.1 on Serial0.16 due to excessive (13) retransmissions
19:18:23: OSPF: 1.1.1.1 address 52.5.84.2 on Serial0.16 is dead, state DOWN
19:18:23: %OSPF-5-ADJCHG: Process 100, Nbr 1.1.1.1 on Serial0.16 from EXSTART to DOWN, Neighbor Down
: Too many retransmitio
19:18:27: OSPF: Send DBD to 2.2.2.2 on Serial0.17 seq 0x2CC opt 0x48 flag 0x7 len 32
19:18:27: OSPF: Retransmitting DBD to 2.2.2.2 on Serial0.17 [12]
19:18:27: OSPF: Rcv hello from 2.2.2.2 area 0.0.0.100 from Serial0.17 52.5.84.130
19:18:27: OSPF: End of hello processing
19:18:27: OSPF: Build router LSA for area 0.0.0.84, router ID 84.84.84.84, seq 0x8000001D
19:18:27: OSPF: Build router LSA for area 0.0.0.100, router ID 84.84.84.84, seq 0x8000001D
19:18:32: OSPF: Send DBD to 2.2.2.2 on Serial0.17 seq 0x2CC opt 0x48 flag 0x7 len 32
19:18:32: OSPF: Retransmitting DBD to 2.2.2.2 on Serial0.17 [13]
19:18:33: OSPF: Rcv hello from 1.1.1.1 area 0.0.0.84 from Serial0.16 52.5.84.2
19:18:33: OSPF:
OSPF: Nbr 1.1.1.1 52.5.84.2 Serial0.16 is currently ignored
19:18:37: OSPF: Killing nbr 2.2.2.2 on Serial0.17 due to excessive (13) retransmissions
19:18:37: OSPF: 2.2.2.2 address 52.5.84.130 on Serial0.17 is dead, state DOWN
19:18:37: %OSPF-5-ADJCHG: Process 100, Nbr 2.2.2.2 on Serial0.17 from EXSTART to DOWN, Neighbor Down
: Too many retransmitions
19:18:37: OSPF: Rcv hello from 2.2.2.2 area 0.0.0.100 from Serial0.17 52.5.84.130
19:18:37: OSPF:
OSPF: Nbr 2.2.2.2 52.5.84.130 Serial0.17 is currently ignored
bar#
19:18:43: OSPF: Rcv hello from 1.1.1.1 area 0.0.0.84 from Serial0.16 52.5.84.2
19:18:43: OSPF:
OSPF: Nbr 1.1.1.1 52.5.84.2 Serial0.16 is currently ignored
19:18:47: OSPF: Rcv hello from 2.2.2.2 area 0.0.0.100 from Serial0.17 52.5.84.130
19:18:47: OSPF:
OSPF: Nbr 2.2.2.2 52.5.84.130 Serial0.17 is currently ignored
bar#no debug all
All possible debugging has been turned off
bar#
04-08-2003 06:27 AM
Can you provide us the routing table?
I think you cannot do this at the same time:
redistribute connected metric 2000 metric-type 1 subnets
network 52.72.31.1 0.0.0.0 area 0.0.0.84
Since the 52.72.31.1 is the addr of eth and you put this net on the area 84, the redistributed connected do this for you.
And i think too that area 84 should be nssa.
04-02-2003 05:55 AM
Tom
Prior to looking at the OSPF at L3 I would ensure my PVC's were mapped properly.
My suggestions
1. turn on cdp see what you get. make sure your DLCI's at the remote side are mapped to the proper interfaces, the carrier could just have them reveresed.
2. if every thing is mappered properly , remove the FR traffic shaping parameters.
It looks to me that your PVC's are not mapped properly
04-02-2003 06:21 AM
I did what you asked, the result is below. The crossed pvc's did occur to me and I checked with the provider and I think the results below show that they are ok.
However one odd thing on debug ip ospf adj output I noticed a line stating "could not see ourselves in hello" . Hello packets are being traded but the negotiation seems to be failing.
There is no frame-relay adaptive shaping.
Bar#sh cdp neighbors
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater
Device ID Local Intrfce Holdtme Capability Platform Port ID
hq Ser 0.16 134 R 3660 Ser 1/0.134
Long Ser 0.17 133 R 3660 Ser 1/0.148
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