From: Stephen Austin (routepackets@xxxxxxxxxxxxx)
Date: Thu Jun 06 2002 - 22:04:34 GMT-3
Two things you might want to check:
(1) Turn OFF spanning tree on the connected ports on the switch.
(2) Enable 'ip cef' on the routers.
I have experienced a similar ping results in a WAN environment, and the
above resolved the problem.
Regards,
Steve
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Mingzhou Nie
Sent: Wednesday, June 05, 2002 10:12 PM
To: Lab Candidate; Derekc@mad.scientist.com; ccielab@groupstudy.com
Subject: RE: OSPF neighbor problem
How many switches in between two routers? Is there a noncisco switch
involved? Sounds like an IOS bug to me.
--- Lab Candidate <labccie@yahoo.com> wrote:
> Derek, rebooted the switch to no vail. and here's how it turned out
> for extended ping with 100
> packets of 1500 bytes. I am going to check the physical
> cable/connections.
> Also changed the ip ospf network to nonbroadcast and put in neighbors
> on both r3 and r5, it's
> stuck in init and sttempt states:
>
> r3#sh ip os n
>
> Neighbor ID Pri State Dead Time Address
> Interface
> 170.10.30.1 0 FULL/DROTHER 00:01:35 170.10.80.4
> Serial0/1
> 198.133.219.25 0 FULL/DROTHER 00:01:39 170.10.80.2
> Serial0/1
> N/A 0 ATTEMPT/DROTHER - 170.10.54.2
> Ethernet0/0
> r3#
>
> r5#sh ip os n
>
> Neighbor ID Pri State Dead Time Address
> Interface
> 170.10.50.1 1 INIT/DROTHER 00:01:05 170.10.54.1
> FastEthernet0/0
> r5#
>
>
> r3#p
> Protocol [ip]:
> Target IP address: 170.10.54.2
> Repeat count [5]: 100
> Datagram size [100]: 1500
> Timeout in seconds [2]:
> Extended commands [n]:
> Sweep range of sizes [n]:
> Type escape sequence to abort.
> Sending 100, 1500-byte ICMP Echos to 170.10.54.2, timeout is 2
> seconds:
>
!!!!!!!!.!!.!!.!!!!.!!!!.!!.!!!!.!!!!.!!.!!!!.!!!!!.!.!!!!.!!!!!.!!!!!
> !!.!.!!.!.!!!!!
> 00:54:30: %OSPF-5-ADJCHG: Process 9, Nbr 170.10.40.1 on Ethernet0/0
> from EXSTART
> to DOWN, Neighbor Down: Too many retransmitions.!.!!!!!.!.!!.!
> Success rate is 77 percent (77/100), round-trip min/avg/max =
> 192/349/1943 ms
> r3#
>
> --- "Derekc@mad.scientist.com" <derekc@mad.scientist.com> wrote:
> > Everything you have shown so far seems fine. Here are two
> suggestions you
> > might want to try:
> > Do an extended ping (100 large size packets) from one router to
> another and
> > see if your have any significant packet drops. If so, try to
> change your
> > CAT5 cable.
> > If your CAT 5 cables are good, then try this. Change your Ethernet
> and Fast
> > Ethernet from OPSF network broadcast to OSPF network NMBA and then
> specific
> > each other as neighbor. If that fixed your problem (a big IF at
> that),
> > check your VLAN and port configuration. The VLAN (or port) might
> have
> > multicast turn off.
> > If your switch is configured properly, try reloading the switch.
> And then
> > revert your router Ethernet and Fast E interface back to broadcast.
> > I hope this help. Otherwise you really SOL
> > Good luck,
> > Derek
> >
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf
> Of Lab
> > Candidate
> > Sent: Wednesday, June 05, 2002 1:48 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)
>
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