From: Nikolay Nikolov (nnikolov@xxxxxxxxxxx)
Date: Wed Jun 05 2002 - 18:52:40 GMT-3
The debug definitely shows problem with transmitting the packets between the
router:
> >00:22:38: OSPF: Send DBD to 5.5.5.5 on Ethernet0/0 seq 0xDE7 opt 0x42
> flag 0x7 len 32
> > >00:22:38: OSPF: Retransmitting DBD to 5.5.5.5 on Ethernet0/0 [4]
> > >00:22:38: OSPF: rcv. v:2 t:1 l:48 rid:5.5.5.5
> > > aid:0.0.0.2 chk:2C70 aut:0 auk: from Ethernet0/0
> > >00:22:38: OSPF: Rcv hello from 5.5.5.5 area 2 from Ethernet0/0
R3 is sending DBD with flag 0x7 (master) and immediately is retransmitting
the packets, but not getting anything back from R5. R5 receives this packet,
but seems reply doesn't get to R3
If you do show int e0/0 and sh int f0/0 you probably will see input/output
errors. Do the same on the interfaces on switch connecting these routers.
There should be 0 errors, if there is any, you may have hardware problem.
What about swapping R3 (R5) with different one and testing it out?
Hope this help.
Nick
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Lab Candidate
Sent: Wednesday, June 05, 2002 2:01 PM
To: Treptow, Georg; Edward Monk; 'Bauer, Rick'; 'Michael Breen';
tron@huapi.ba.ar
Cc: ccielab@groupstudy.com
Subject: RE: OSPF neighbor problem
Ok Carlos and George, I took out router-id and rebooted both routers, and I
nailed down all ports
involved to 10Mb and half-duplex (ie. r3's e0/0, r5's f0/0, cat38548's f0/4
and f0/7), and still
no go:
r3#
interface Ethernet0/0
ip address 170.10.54.1 255.255.255.0
ip ospf mtu-ignore
half-duplex
!
r5#
interface FastEthernet0/0
ip address 170.10.54.2 255.255.255.0
ip ospf mtu-ignore
speed 10
half-duplex
!
CAT3548#
interface FastEthernet0/4
duplex half
speed 10
switchport access vlan 8
!
interface FastEthernet0/7
duplex half
speed 10
switchport access vlan 8
r3#sh ip os n
Neighbor ID Pri State Dead Time Address Interface
170.10.30.1 0 FULL/DROTHER 00:01:41 170.10.80.4 Serial0/1
198.133.219.25 0 FULL/DROTHER 00:01:46 170.10.80.2 Serial0/1
170.10.40.1 1 EXSTART/DROTHER 00:00:38 170.10.54.2
Ethernet0/0
r5#sh ip os n
Neighbor ID Pri State Dead Time Address Interface
170.10.50.1 1 EXCHANGE/DR 00:00:36 170.10.54.1
FastEthernet0/
0
r5#
*Mar 1 11:20:07.533: OSPF: Rcv hello from 170.10.50.1 area 2 from
FastEthernet0
/0 170.10.54.1
*Mar 1 11:20:07.533: OSPF: End of hello processing
*Mar 1 11:20:07.537: OSPF: Rcv DBD from 170.10.50.1 on FastEthernet0/0 seq
0xCF
9 opt 0x42 flag 0x7 len 32 mtu 1500 state EXCHANGE
*Mar 1 11:20:07.537: OSPF: Send DBD to 170.10.50.1 on FastEthernet0/0 seq
0xCF9
opt 0x42 flag 0x2 len 52
r5#
*Mar 1 11:20:12.533: OSPF: rcv. v:2 t:2 l:32 rid:170.10.50.1
aid:0.0.0.2 chk:CCF3 aut:0 auk: from FastEthernet0/0
*Mar 1 11:20:12.533: OSPF: Rcv DBD from 170.10.50.1 on FastEthernet0/0 seq
0xCF
9 opt 0x42 flag 0x7 len 32 mtu 1500 state EXCHANGE
*Mar 1 11:20:12.537: OSPF: Send DBD to 170.10.50.1 on FastEthernet0/0 seq
0xCF9
opt 0x42 flag 0x2 len 52
r5#
*Mar 1 11:20:17.533: OSPF: rcv. v:2 t:1 l:48 rid:170.10.50.1
aid:0.0.0.2 chk:8E68 aut:0 auk: from FastEthernet0/0
*Mar 1 11:20:17.533: OSPF: Rcv hello from 170.10.50.1 area 2 from
FastEthernet0
/0 170.10.54.1
*Mar 1 11:20:17.537: OSPF: End of hello processing
*Mar 1 11:20:17.533: OSPF: Rcv hello from 170.10.50.1 area 2 from
FastEthernet0
/0 170.10.54.1
*Mar 1 11:20:17.537: OSPF: End of hello processing
r5#
*Mar 1 11:20:27.533: OSPF: rcv. v:2 t:1 l:44 rid:170.10.50.1
aid:0.0.0.2 chk:4085 aut:0 auk: from FastEthernet0/0
*Mar 1 11:20:27.537: OSPF: Rcv hello from 170.10.50.1 area 2 from
FastEthernet0
/0 170.10.54.1
*Mar 1 11:20:27.537: OSPF: Cannot see ourself in hello from 170.10.50.1 on
Fast
Ethernet0/0, state INIT
*Mar 1 11:20:27.537: OSPF: Neighbor change Event on interface
FastEthernet0/0
*Mar 1 11:20:27.537: OSPF: DR/BDR election on FastEthernet0/0
*Mar 1 11:20:27.537: OSPF: Elect BDR 170.10.40.1
*Mar 1 11:20:27.537: OSPF: Elect DR 170.10.40.1
*Mar 1 11:20:27.537: OSPF: Elect BDR 0.0.0.0
*Mar 1 11:20:27.537: OSPF: Elect DR 170.10.40.1
r5#
*Mar 1 11:20:27.537: DR: 170.10.40.1 (Id) BDR: none
*Mar 1 11:20:27.541: OSPF: Remember old DR 170.10.50.1 (id)
*Mar 1 11:20:27.541: OSPF: End of hello processing
*Mar 1 11:20:28.041: OSPF: No full nbrs to build Net Lsa for interface
FastEthe
rnet0/0
*Mar 1 11:20:28.041: OSPF: Reset old DR on FastEthernet0/0
r5#
Carlos G Mendioroz <tron@huapi.ba.ar>
Sent by: nobody@groupstudy.com
06/05/2002 04:39 AM
Please respond to Carlos G Mendioroz
To: "Chua, Parry" <Parry.Chua@hp.com>
cc: Lab Candidate <labccie@yahoo.com>, li jian hua <jasonli@ci
sco.com>,
ccielab@groupstudy.com
Subject: Re: OSPF neighbor problem
This sounds like the DBD packets are not getting through.
Would nail the interface to half duplex, speed to 10 in the fast,
just to find out if it is indeed a layer 1 issue...
Remember that hellos are short, DBDs are long.
What if you where to use a loopback interface instead of the router-id. It
might be worth a shot.
Georg Treptow
-----Original Message-----
From: Lab Candidate [mailto:labccie@yahoo.com]
Sent: Wednesday, June 05, 2002 12:48 PM
To: Edward Monk; 'Bauer, Rick'; 'Michael Breen'
Cc: ccielab@groupstudy.com
Subject: RE: OSPF neighbor problem
Thanks all for all the response and good advices. this is what i've done:
1. the routers have been rebooted before i posted for help
2. they are up for over 10 hours now, and still doing the same thing.
3. they can ping each other over the e0/0 and f0/0.
4. they are both using ios 12.2(7a), see below show version
5. both intf's are plugged in Cat3548's f0/4 and f0/7 and vlan'ed in vlan8:
#show cdp d
r3 Fas 0/4 169 R 2612 Eth 0/0
r5 Fas 0/7 124 R 2621 Fas 0/0
#show vlan
8 VLAN0008 active Fa0/4, Fa0/6, Fa0/7, Fa0/9
6. i don't think it's hardware problem, and routers, intf's, cat3548 have
been working fine.
7. as to Guy Lupi's advice, I used half-duplex before and changed it to
full, to no joy.
now what? ;-)
r3#sh ver
Cisco Internetwork Operating System Software
IOS (tm) C2600 Software (C2600-JK9O3S-M), Version 12.2(7a), RELEASE SOFTWARE
(fc
2)
Copyright (c) 1986-2002 by cisco Systems, Inc.
Compiled Thu 21-Feb-02 03:48 by pwade
Image text-base: 0x80008088, data-base: 0x8153F5D0
ROM: System Bootstrap, Version 11.3(2)XA4, RELEASE SOFTWARE (fc1)
r3 uptime is 10 hours, 14 minutes
System returned to ROM by reload
System image file is "flash:c2600-jk9o3s-mz.122-7a.bin"
cisco 2612 (MPC860) processor (revision 0x300) with 61440K/4096K bytes of
memory
.
Processor board ID JAD05500CQ6 (2044823788)
M860 processor: part number 0, mask 49
Bridging software.
X.25 software, Version 3.0.0.
SuperLAT software (copyright 1990 by Meridian Technology Corp).
TN3270 Emulation software.
Basic Rate ISDN software, Version 1.1.
1 Ethernet/IEEE 802.3 interface(s)
1 Token Ring/IEEE 802.5 interface(s)
2 Serial(sync/async) network interface(s)
1 ISDN Basic Rate interface(s)
32K bytes of non-volatile configuration memory.
16384K bytes of processor board System flash (Read/Write)
Configuration register is 0x2102
r3#
10:15:32: %OSPF-5-ADJCHG: Process 9, Nbr 5.5.5.5 on Ethernet0/0 from EXSTART
to
DOWN, Neighbor Down: Too many retransmitions
r3#
10:16:32: %OSPF-5-ADJCHG: Process 9, Nbr 5.5.5.5 on Ethernet0/0 from DOWN to
DOW
N, Neighbor Down: Ignore timer expired
r3#
10:17:52: %OSPF-5-ADJCHG: Process 9, Nbr 5.5.5.5 on Ethernet0/0 from EXSTART
to
DOWN, Neighbor Down: Too many retransmitions
r3#
10:18:52: %OSPF-5-ADJCHG: Process 9, Nbr 5.5.5.5 on Ethernet0/0 from DOWN to
DOW
N, Neighbor Down: Ignore timer expired
r3#
r5#sh ver
Cisco Internetwork Operating System Software
IOS (tm) C2600 Software (C2600-JK9O3S-M), Version 12.2(7a), RELEASE SOFTWARE
(fc
2)
Copyright (c) 1986-2002 by cisco Systems, Inc.
Compiled Thu 21-Feb-02 03:48 by pwade
Image text-base: 0x80008088, data-base: 0x8153F5D0
ROM: System Bootstrap, Version 12.1(3r)T2, RELEASE SOFTWARE (fc1)
r5 uptime is 10 hours, 15 minutes
System returned to ROM by reload
System image file is "flash:c2600-jk9o3s-mz.122-7a.bin"
cisco 2621 (MPC860) processor (revision 0x600) with 60416K/5120K bytes of
memory
.
Processor board ID JAD06020LLA (3147233752)
M860 processor: part number 0, mask 49
Bridging software.
X.25 software, Version 3.0.0.
SuperLAT software (copyright 1990 by Meridian Technology Corp).
TN3270 Emulation software.
2 FastEthernet/IEEE 802.3 interface(s)
2 Serial(sync/async) network interface(s)
--More--
*Mar 1 10:16:16.221: %OSPF-5-ADJCHG: Process 9, Nbr 3.3.3.3 on
FastEthernet0/0
from EXSTART to DOWN, Neighbor Down: Too many retransmitions
2 Voice FXS interface(s)
32K bytes of non-volatile configuration memory.
16384K bytes of processor board System flash (Read/Write)
Configuration register is 0x2102
r5#
*Mar 1 10:17:16.221: %OSPF-5-ADJCHG: Process 9, Nbr 3.3.3.3 on
FastEthernet0/0
from DOWN to DOWN, Neighbor Down: Ignore timer expired
r5#
*Mar 1 10:18:36.221: %OSPF-5-ADJCHG: Process 9, Nbr 3.3.3.3 on
FastEthernet0/0
from EXSTART to DOWN, Neighbor Down: Too many retransmitions
r5#
*Mar 1 10:19:36.221: %OSPF-5-ADJCHG: Process 9, Nbr 3.3.3.3 on
FastEthernet0/0
from DOWN to DOWN, Neighbor Down: Ignore timer expired
r5#
*Mar 1 10:20:56.221: %OSPF-5-ADJCHG: Process 9, Nbr 3.3.3.3 on
FastEthernet0/0
from EXSTART to DOWN, Neighbor Down: Too many retransmitions
r5#
--- Edward Monk <emonk@att.net> wrote:
> I had a similar issue between my 2620 and a 2501 a few months back. What
> I found was that everything was correct. How hard is establishing a
> neighbor relationship in a broadcast type media anyway? I had no bad
> hardware and all configurations were correct. I even tried setting my
> OSPF to non-broadcast type and putting in neighbor commands. As I recall
> it wouldn't work either.
>
> What I found was it was the IOS version in my 2501. It was a 12.0
> version but I can't recall which one. I have since changed my IOS
> versions all to 12.1.x and have never seen a repeat of the problem.
>
> Hopefully this helps.
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Bauer, Rick
> Sent: Wednesday, June 05, 2002 6:22 AM
> To: 'Michael Breen'; Lab Candidate
> Cc: ccielab@groupstudy.com
> Subject: RE: OSPF neighbor problem
>
> So....Router-id would be the tie breaker. It is something else.
>
> -----Original Message-----
> From: Michael Breen [mailto:mbreen@cisco.com]
> Sent: Wednesday, June 05, 2002 8:26 AM
> To: Lab Candidate
> Cc: ccielab@groupstudy.com
> Subject: RE: OSPF neighbor problem
>
>
> Both routers have a priority of 1......
>
>
> --MB
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> Lab Candidate
> Sent: Wednesday, June 05, 2002 2:24 AM
> To: li jian hua
> Cc: ccielab@groupstudy.com
> Subject: Re: OSPF neighbor problem
>
>
> Jason, thanks for your advice. I have checked all the items, and even
> applied the ip ospf
> mtu-ignore command, but sitll not working. here's the output for two
> adjacent interfaces:
>
> r3#sh ip os int e0/0
> Ethernet0/0 is up, line protocol is up
> Internet Address 170.10.54.1/24, Area 2
> Process ID 9, Router ID 3.3.3.3, Network Type BROADCAST, Cost: 10
> Transmit Delay is 1 sec, State BDR, Priority 1
> Designated Router (ID) 5.5.5.5, Interface address 170.10.54.2
> Backup Designated router (ID) 3.3.3.3, Interface address 170.10.54.1
> Flush timer for old DR LSA due in 00:02:36
> Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
> Hello due in 00:00:02
> Index 2/3, flood queue length 0
> Next 0x0(0)/0x0(0)
> Last flood scan length is 0, maximum is 0
> Last flood scan time is 0 msec, maximum is 0 msec
> Neighbor Count is 1, Adjacent neighbor count is 0
> Suppress hello for 0 neighbor(s)
> r3#
>
> r5#sh ip os int f0/0
> FastEthernet0/0 is up, line protocol is up
> Internet Address 170.10.54.2/24, Area 2
> Process ID 9, Router ID 5.5.5.5, Network Type BROADCAST, Cost: 1
> Transmit Delay is 1 sec, State DR, Priority 1
> Designated Router (ID) 5.5.5.5, Interface address 170.10.54.2
> Backup Designated router (ID) 3.3.3.3, Interface address 170.10.54.1
> Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
> Hello due in 00:00:02
> Index 1/3, flood queue length 0
> Next 0x0(0)/0x0(0)
> Last flood scan length is 0, maximum is 0
> Last flood scan time is 0 msec, maximum is 0 msec
> Neighbor Count is 1, Adjacent neighbor count is 0
> Suppress hello for 0 neighbor(s)
> r5#
>
> --- li jian hua <jasonli@cisco.com> wrote:
> > Please check mtu,network mask,network type,interface timer
> > parameter,authentication-type etc between two ethernet interface.They
> > should be the same.
> > Cisco has a book named by Troubleshooting IP Routing Protocols (CCIE
> > Professional Development Series).
> >
> http://www.ciscopress.com/catalog/product.asp?product_id={17F54ECB-821D-
> 488F
> -B906-E022F53FE5FA}&session_id={6BDB75D0-3B65-4699-8BB5-D2940D662D86}
> > please read it.
> > rgds
> > jason
> > At 00:44 2002-6-5 -0700, Lab Candidate wrote:
> > >two routers r3 and r5 won't form ospf neighbors over ethernet intf's.
> > >it's stuck in exstart state. could anyone please help with any
> advice?
> > >
> > >
> > >r3-e0/0----------f0/0-r5
> > >
> > >
> > >r3:
> > >
> > >interface Ethernet0/0
> > > ip address 170.10.54.1 255.255.255.0
> > > full-duplex
> > >!
> > >router ospf 9
> > > router-id 3.3.3.3
> > > log-adjacency-changes
> > > area 2 virtual-link 5.5.5.5
> > > network 170.10.50.0 0.0.0.255 area 2
> > > network 170.10.54.0 0.0.0.255 area 2
> > > network 170.10.80.0 0.0.0.255 area 0
> > > neighbor 170.10.80.4
> > > neighbor 170.10.80.2
> > >!
> > >r3#sh ip os n
> > >
> > >Neighbor ID Pri State Dead Time Address
> Interface
> > >170.10.30.1 0 FULL/DROTHER 00:01:38 170.10.80.4
> Serial0/1
> > >198.133.219.25 0 FULL/DROTHER 00:01:45 170.10.80.2
> Serial0/1
> > >5.5.5.5 1 EXSTART/DR 00:00:37 170.10.54.2
> Ethernet0/0
> > >r3#
> > >
> > >
> > >r5:
> > >
> > >interface FastEthernet0/0
> > > ip address 170.10.54.2 255.255.255.0
> > > duplex auto
> > > speed auto
> > >
> > >router ospf 9
> > > router-id 5.5.5.5
> > > log-adjacency-changes
> > > area 2 virtual-link 3.3.3.3
> > > network 170.10.40.0 0.0.0.255 area 3
> > > network 170.10.54.0 0.0.0.255 area 2
> > >!
> > >
> > >r5#sh ip os n
> > >
> > >Neighbor ID Pri State Dead Time Address
> Interface
> > >3.3.3.3 1 EXSTART/BDR 00:00:35 170.10.54.1
> > >FastEthernet0/0
> > >r5#
> > >
> > >
> > >==============debug=================
> > >
> > >r3#
> > >
> > >00:22:38: OSPF: Send DBD to 5.5.5.5 on Ethernet0/0 seq 0xDE7 opt 0x42
> flag
> > >0x7 l
> > >en 32
> > >00:22:38: OSPF: Retransmitting DBD to 5.5.5.5 on Ethernet0/0 [4]
> > >00:22:38: OSPF: rcv. v:2 t:1 l:48 rid:5.5.5.5
> > > aid:0.0.0.2 chk:2C70 aut:0 auk: from Ethernet0/0
> > >00:22:38: OSPF: Rcv hello from 5.5.5.5 area 2 from Ethernet0/0
> 170.10.54.2
> > >00:22:38: OSPF: End of hello processing
> > >r3#
> > >00:22:39: OSPF: Input packet while OSPF disabled on Serial0/0
> > >r3#
> > >00:22:43: OSPF: Send DBD to 5.5.5.5 on Ethernet0/0 seq 0xDE7 opt 0x42
> flag
> > >0x7 l
> > >en 32
> > >00:22:43: OSPF: Retransmitting DBD to 5.5.5.5 on Ethernet0/0 [5]
> > >r3#
> > >00:22:44: OSPF: Input packet while OSPF disabled on Serial0/0
> > >r3#
> > >00:22:48: OSPF: Send DBD to 5.5.5.5 on Ethernet0/0 seq 0xDE7 opt 0x42
> flag
> > >0x7 l
> > >en 32
> > >00:22:48: OSPF: Retransmitting DBD to 5.5.5.5 on Ethernet0/0 [6]
> > >00:22:48: OSPF: rcv. v:2 t:1 l:48 rid:5.5.5.5
> > > aid:0.0.0.2 chk:2C70 aut:0 auk: from Ethernet0/0
> > >00:22:48: OSPF: Rcv hello from 5.5.5.5 area 2 from Ethernet0/0
> 170.10.54.2
> > >00:22:48: OSPF: End of hello processing
> > >r3#
> > >00:22:49: OSPF: Input packet while OSPF disabled on Serial0/0
> > >r3#
> > >00:22:53: OSPF: Send DBD to 5.5.5.5 on Ethernet0/0 seq 0xDE7 opt 0x42
> flag
> > >0x7 l
>
=== message truncated ===
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