[c-nsp] OSPF issue
Kimaru Mansour
kimaru at gmail.com
Sat Nov 12 11:53:52 EST 2011
Hi John,
I'm failing to get the full picture of the situation. Short from the fact
that I'm contracting a headache from trying to read the logs :-)
Maybe I could help if you could provide the configs of the ports and maybe
supply the output of the commands and log with proper formatting. Also,
throw in a "show ip ospf" in there.
Rgds,
K
On Sat, Nov 12, 2011 at 7:43 AM, John Elliot <johnelliot67 at hotmail.com>wrote:
>
> > Lets try this once again:
> >
> > You have a port-channel between R1 and R2(over which; you have had ospf
> running without a problem...Correct?
>
> No - We have a working ospf adj between FA3/0(R1), and a vlan/dot1q
> subint /30(R2) via provider A
> >
> > Also you have ospf-running on a broadcast-segment ie, netmask on
> port-channel ip-addr is NOT /30 is, not ospf-network point-to-point.
> No - We have a new link (/30) new vlan from new provider, same vlan at
> both ends(As dot1q subints) that is going up/down every ~60sec
> >
> > So you now have a situation where you are asking two routers R1 and R2(
> with their-own ospf-router-ids to form "another" OSPF Neighbor relation via
> the same port-channel!
> >
> > The question you need to ask yourself is this:
> >
> > How can that be possible? It is NOT.
> >
> > Change your config to be point-to-point....(ospf) and you will see the
> what-you-expect!
> >
>
> We have 2 links, both /30's, one (working) is handed of via vlan at
> R2(Which is portchan dot1q subint), the other is physical int FA3/0, the
> one that is up/down, is handed off via different provider, same vlan at
> each end, and as portchan dot1q subints.
> Hope that makes sense?
>
> > HTH
> > ./Randy
> >
> > --- On Fri, 11/11/11, John Elliot <johnelliot67 at hotmail.com> wrote:
> >
> > > From: John Elliot <johnelliot67 at hotmail.com>
> > > Subject: Re: [c-nsp] OSPF issue
> > > To: "cisco-nsp" <cisco-nsp at puck.nether.net>
> > > Date: Friday, November 11, 2011, 4:51 PM
> > >
> > > Well, that turned out better :/
> > >
> > > > From: johnelliot67 at hotmail.com
> > > > To: cisco-nsp at puck.nether.net
> > > > Date: Sat, 12 Nov 2011 11:47:58 +1100
> > > > Subject: Re: [c-nsp] OSPF issue
> > > >
> > > >
> > > > Err - dont know where the line breaks went in that
> > > msg? I'll try re-send(Hopefully a tad more readable)
> > > >
> > > > Hope someone can assist with an ospf problem - We have
> > > an existing ospf adj running fine between R1+R2, we have
> > > just provisioned a second link, enabled ospf and we see it
> > > form adjacency which lasts ~60seconds, then R1 sees R2
> > > as dead, and R2 Cannot see ourself in hello from R1, and
> > > then the whole thing starts again.
> > > > With both adj. up(From R1):Neighbor ID
> > > Pri State
> > > Dead
> > > Time Address
> > > Interfacexxx.xxx.76.248
> > > 1 FULL/DR
> > > 00:00:00
> > > xxx.xxx.66.62 Port-channel1.87xxx.xxx.76.248
> > > 1 FULL/DR
> > > 00:00:39 xxx.xxx.66.2
> > > FastEthernet3/0
> > > > Then "new" link loses adj. after ~60secondsNeighbor
> > > ID Pri State
> > > Dead
> > > Time Address
> > > Interfacexxx.xxx.76.248
> > > 1 FULL/DR
> > > 00:00:38 xxx.xxx.66.2
> > > FastEthernet3/0
> > > > NB - pings to/from both R1+R2 are clean(No
> > > loss/excessive latency), and both ends(Ints) set to mtu of
> > > 1500.
> > > > R1 logs
> > > > Nov 12 10:12:48.716 aest: OSPF: xxx.xxx.76.248 address
> > > xxx.xxx.66.62 on Port-channel1.87 is deadNov 12 10:12:48.716
> > > aest: OSPF: xxx.xxx.76.248 address xxx.xxx.66.62 on
> > > Port-channel1.87 is dead, state DOWNNov 12 10:12:48.716
> > > aest: %OSPF-5-ADJCHG: Process 100, Nbr xxx.xxx.76.248 on
> > > Port-channel1.87 from FULL to DOWN, Neighbor Down: Dead
> > > timer expiredNov 12 10:12:48.716 aest: OSPF: Neighbor change
> > > Event on interface Port-channel1.87Nov 12 10:12:48.716 aest:
> > > OSPF: DR/BDR election on Port-channel1.87 Nov 12
> > > 10:12:48.716 aest: OSPF: Elect BDR xxx.xxx.76.238Nov 12
> > > 10:12:48.716 aest: OSPF: Elect DR xxx.xxx.76.238Nov 12
> > > 10:12:48.716 aest: OSPF: Elect BDR 0.0.0.0Nov 12
> > > 10:12:48.716 aest: OSPF: Elect DR xxx.xxx.76.238Nov 12
> > > 10:12:48.716 aest: DR:
> > > xxx.xxx.76.238 (Id) BDR: none Nov 12
> > > 10:12:48.716 aest: OSPF: Reset Port-channel1.87 flush
> > > timerNov 12 10:12:48.716 aest: OSPF: Remember old DR
> > > xxx.xxx.76.248 (id)Nov 12 10:12:49.216 aest: OSPF: Send with
> > > youngest Key 10Nov 12 10:12!
> > > :4!
> > > > 9.216 aest: OSPF: Send with youngest Key 10Nov
> > > 12 10:12:49.216 aest: OSPF: Send with youngest Key 10Nov 12
> > > 10:12:49.216 aest: OSPF: Build router LSA for area 0.0.0.0,
> > > router ID xxx.xxx.76.238, seq 0x80014360, process 100Nov 12
> > > 10:12:49.216 aest: OSPF: No full nbrs to build Net Lsa for
> > > interface Port-channel1.87Nov 12 10:12:51.716 aest: OSPF:
> > > Send with youngest Key 10Nov 12 10:12:51.732 aest: OSPF:
> > > Send with youngest Key 10Nov 12 10:12:58.432 aest: OSPF:
> > > Send with youngest Key 10Nov 12 10:12:58.432 aest: OSPF:
> > > Send with youngest Key 10Nov 12 10:12:58.432 aest: OSPF:
> > > Send with youngest Key 10Nov 12 10:12:58.432 aest: OSPF:
> > > Send with youngest Key 10Nov 12 10:12:58.448 aest: OSPF: 2
> > > Way Communication to xxx.xxx.76.248 on Port-channel1.87,
> > > state 2WAYNov 12 10:12:58.448 aest: OSPF: Neighbor change
> > > Event on interface Port-channel1.87Nov 12 10:12:58.448 aest:
> > > OSPF: DR/BDR election on Port-channel1.87 Nov 12
> > > 10:12:58.448 aest: OSPF: Elect BDR 0.0.0.0Nov 12
> > > 10:12:58.448 aest: OSPF:!
> > > E!
> > > > lect DR xxx.xxx.76.248Nov 12 10:12:58.448 aest:
> > > OSPF: Elect BDR xxx.xxx.76.238Nov 12 10:12:58.448 aest:
> > > OSPF: Elect DR xxx.xxx.76.248Nov 12 10:12:58.448 aest:
> > > DR: xxx.xxx.76.248
> > > (Id) BDR: xxx.xxx.76.238 (Id)Nov 12
> > > 10:12:58.448 aest: OSPF: Send DBD to xxx.xxx.76.248 on
> > > Port-channel1.87 seq 0x1717 opt 0x52 flag 0x7 len 32Nov 12
> > > 10:12:58.448 aest: OSPF: Send with youngest Key 10Nov 12
> > > 10:12:58.448 aest: OSPF: Set Port-channel1.87 flush timerNov
> > > 12 10:12:58.448 aest: OSPF: Remember old DR xxx.xxx.76.238
> > > (id)Nov 12 10:12:58.448 aest: OSPF: Neighbor change Event on
> > > interface Port-channel1.87Nov 12 10:12:58.448 aest: OSPF:
> > > DR/BDR election on Port-channel1.87 Nov 12 10:12:58.448
> > > aest: OSPF: Elect BDR xxx.xxx.76.238Nov 12 10:12:58.448
> > > aest: OSPF: Elect DR xxx.xxx.76.248Nov 12 10:12:58.448
> > > aest: DR: xxx.xxx.76.248
> > > (Id) BDR: xxx.xxx.76.238 (Id)Nov 12
> > > 10:12:58.464 aest: OSPF: Rcv DBD from xxx.xxx.76.248 on
> > > Port-channel1.87 seq 0xB50 opt 0x52 flag 0x7 len 32
> > > mtu 150!
> > > 0 state EXSTARTNov 12 10:12:58.464 aest: OSPF: NBR
> > > Negotiation Done. We a!
> > > > re the SLAVENov 12 10:12:58.464 aest: OSPF: Send
> > > DBD to xxx.xxx.76.248 on Port-channel1.87 seq 0xB50 opt 0x52
> > > flag 0x2 len 1412Nov 12 10:12:58.464 aest: OSPF: Send with
> > > youngest Key 10Nov 12 10:12:58.484 aest: OSPF: Rcv DBD from
> > > xxx.xxx.76.248 on Port-channel1.87 seq 0xB51 opt 0x52 flag
> > > 0x3 len 1412 mtu 1500 state EXCHANGENov 12
> > > 10:12:58.484 aest: OSPF: Send DBD to xxx.xxx.76.248 on
> > > Port-channel1.87 seq 0xB51 opt 0x52 flag 0x2 len 1412Nov 12
> > > 10:12:58.484 aest: OSPF: Send with youngest Key 10Nov 12
> > > 10:12:58.500 aest: OSPF: Rcv DBD from xxx.xxx.76.248 on
> > > Port-channel1.87 seq 0xB52 opt 0x52 flag 0x3 len 1412
> > > mtu 1500 state EXCHANGENov 12 10:12:58.500 aest: OSPF: Send
> > > DBD to xxx.xxx.76.248 on Port-channel1.87 seq 0xB52 opt 0x52
> > > flag 0x2 len 1412Nov 12 10:12:58.500 aest: OSPF: Send with
> > > youngest Key 10Nov 12 10:12:58.520 aest: OSPF: Rcv DBD from
> > > xxx.xxx.76.248 on Port-channel1.87 seq 0xB53 opt 0x52 flag
> > > 0x3 len 1412 mtu 1500 state EXCHANGENov 12
> > > 10:12:58.520 aest: OSPF: Sen!
> > > d !
> > > > DBD to xxx.xxx.76.248 on Port-channel1.87 seq
> > > 0xB53 opt 0x52 flag 0x2 len 1412Nov 12 10:12:58.520 aest:
> > > OSPF: Send with youngest Key 10Nov 12 10:12:58.536 aest:
> > > OSPF: Rcv DBD from xxx.xxx.76.248 on Port-channel1.87 seq
> > > 0xB54 opt 0x52 flag 0x3 len 1412 mtu 1500 state
> > > EXCHANGENov 12 10:12:58.536 aest: OSPF: Send DBD to
> > > xxx.xxx.76.248 on Port-channel1.87 seq 0xB54 opt 0x52 flag
> > > 0x2 len 1412Nov 12 10:12:58.536 aest: OSPF: Send with
> > > youngest Key 10Nov 12 10:12:58.552 aest: OSPF: Rcv DBD from
> > > xxx.xxx.76.248 on Port-channel1.87 seq 0xB55 opt 0x52 flag
> > > 0x3 len 1412 mtu 1500 state EXCHANGENov 12
> > > 10:12:58.552 aest: OSPF: Send DBD to xxx.xxx.76.248 on
> > > Port-channel1.87 seq 0xB55 opt 0x52 flag 0x2 len 1412Nov 12
> > > 10:12:58.552 aest: OSPF: Send with youngest Key 10Nov 12
> > > 10:12:58.572 aest: OSPF: Rcv DBD from xxx.xxx.76.248 on
> > > Port-channel1.87 seq 0xB56 opt 0x52 flag 0x3 len 1412
> > > mtu 1500 state EXCHANGENov 12 10:12:58.572 aest: OSPF: Send
> > > DBD to xxx.xxx.76.248 on Port-channel1.87 seq 0!
> > > xB56 opt 0x52 flag 0x2 len 1412Nov 12 10:12:58.572 aest:
> > > OSPF: Send with !
> > > > youngest Key 10Nov 12 10:12:58.588 aest: OSPF:
> > > Rcv DBD from xxx.xxx.76.248 on Port-channel1.87 seq 0xB57
> > > opt 0x52 flag 0x3 len 1412 mtu 1500 state EXCHANGENov
> > > 12 10:12:58.588 aest: OSPF: Send DBD to xxx.xxx.76.248 on
> > > Port-channel1.87 seq 0xB57 opt 0x52 flag 0x2 len 1412Nov 12
> > > 10:12:58.588 aest: OSPF: Send with youngest Key 10Nov 12
> > > 10:12:58.604 aest: OSPF: Rcv DBD from xxx.xxx.76.248 on
> > > Port-channel1.87 seq 0xB58 opt 0x52 flag 0x3 len 1412
> > > mtu 1500 state EXCHANGENov 12 10:12:58.604 aest: OSPF: Send
> > > DBD to xxx.xxx.76.248 on Port-channel1.87 seq 0xB58 opt 0x52
> > > flag 0x2 len 1412Nov 12 10:12:58.604 aest: OSPF: Send with
> > > youngest Key 10Nov 12 10:12:58.624 aest: OSPF: Rcv DBD from
> > > xxx.xxx.76.248 on Port-channel1.87 seq 0xB59 opt 0x52 flag
> > > 0x3 len 1412 mtu 1500 state EXCHANGENov 12
> > > 10:12:58.624 aest: OSPF: Send DBD to xxx.xxx.76.248 on
> > > Port-channel1.87 seq 0xB59 opt 0x52 flag 0x2 len 1412Nov 12
> > > 10:12:58.624 aest: OSPF: Send with youngest Key 10Nov 12
> > > 10:12:58.640 aest: OSPF: !
> > > Rc!
> > > > v DBD from xxx.xxx.76.248 on Port-channel1.87
> > > seq 0xB5A opt 0x52 flag 0x3 len 1412 mtu 1500 state
> > > EXCHANGENov 12 10:12:58.640 aest: OSPF: Send DBD to
> > > xxx.xxx.76.248 on Port-channel1.87 seq 0xB5A opt 0x52 flag
> > > 0x2 len 1412Nov 12 10:12:58.640 aest: OSPF: Send with
> > > youngest Key 10Nov 12 10:12:58.656 aest: OSPF: Rcv DBD from
> > > xxx.xxx.76.248 on Port-channel1.87 seq 0xB5B opt 0x52 flag
> > > 0x3 len 1412 mtu 1500 state EXCHANGENov 12
> > > 10:12:58.656 aest: OSPF: Send DBD to xxx.xxx.76.248 on
> > > Port-channel1.87 seq 0xB5B opt 0x52 flag 0x2 len 1412Nov 12
> > > 10:12:58.656 aest: OSPF: Send with youngest Key 10Nov 12
> > > 10:12:58.676 aest: OSPF: Rcv DBD from xxx.xxx.76.248 on
> > > Port-channel1.87 seq 0xB5C opt 0x52 flag 0x3 len 1412
> > > mtu 1500 state EXCHANGENov 12 10:12:58.676 aest: OSPF: Send
> > > DBD to xxx.xxx.76.248 on Port-channel1.87 seq 0xB5C opt 0x52
> > > flag 0x2 len 1412Nov 12 10:12:58.676 aest: OSPF: Send with
> > > youngest Key 10Nov 12 10:12:58.692 aest: OSPF: Rcv DBD from
> > > xxx.xxx.76.248 on Port-channel1.87 s!
> > > eq 0xB5D opt 0x52 flag 0x3 len 1412 mtu 1500 state
> > > EXCHANGENov 12 10:12:!
> > > > 58.692 aest: OSPF: Send DBD to xxx.xxx.76.248 on
> > > Port-channel1.87 seq 0xB5D opt 0x52 flag 0x2 len 1412Nov 12
> > > 10:12:58.692 aest: OSPF: Send with youngest Key 10Nov 12
> > > 10:12:58.708 aest: OSPF: Rcv DBD from xxx.xxx.76.248 on
> > > Port-channel1.87 seq 0xB5E opt 0x52 flag 0x3 len 1412
> > > mtu 1500 state EXCHANGENov 12 10:12:58.708 aest: OSPF: Send
> > > DBD to xxx.xxx.76.248 on Port-channel1.87 seq 0xB5E opt 0x52
> > > flag 0x2 len 1412Nov 12 10:12:58.708 aest: OSPF: Send with
> > > youngest Key 10Nov 12 10:12:58.728 aest: OSPF: Rcv DBD from
> > > xxx.xxx.76.248 on Port-channel1.87 seq 0xB5F opt 0x52 flag
> > > 0x3 len 1412 mtu 1500 state EXCHANGENov 12
> > > 10:12:58.728 aest: OSPF: Send DBD to xxx.xxx.76.248 on
> > > Port-channel1.87 seq 0xB5F opt 0x52 flag 0x2 len 1412Nov 12
> > > 10:12:58.728 aest: OSPF: Send with youngest Key 10Nov 12
> > > 10:12:58.744 aest: OSPF: Rcv DBD from xxx.xxx.76.248 on
> > > Port-channel1.87 seq 0xB60 opt 0x52 flag 0x3 len 1412
> > > mtu 1500 state EXCHANGENov 12 10:12:58.744 aest: OSPF: Send
> > > DBD to xxx.xxx.76.248 o!
> > > n !
> > > > Port-channel1.87 seq 0xB60 opt 0x52 flag 0x2 len
> > > 1412Nov 12 10:12:58.744 aest: OSPF: Send with youngest Key
> > > 10Nov 12 10:12:58.760 aest: OSPF: Rcv DBD from
> > > xxx.xxx.76.248 on Port-channel1.87 seq 0xB61 opt 0x52 flag
> > > 0x3 len 1412 mtu 1500 state EXCHANGENov 12
> > > 10:12:58.760 aest: OSPF: Send DBD to xxx.xxx.76.248 on
> > > Port-channel1.87 seq 0xB61 opt 0x52 flag 0x2 len 92Nov 12
> > > 10:12:58.760 aest: OSPF: Send with youngest Key 10Nov 12
> > > 10:12:58.776 aest: OSPF: Rcv DBD from xxx.xxx.76.248 on
> > > Port-channel1.87 seq 0xB62 opt 0x52 flag 0x1 len 92
> > > mtu 1500 state EXCHANGENov 12 10:12:58.776 aest: OSPF:
> > > Exchange Done with xxx.xxx.76.248 on Port-channel1.87Nov 12
> > > 10:12:58.776 aest: OSPF: Synchronized with xxx.xxx.76.248 on
> > > Port-channel1.87, state FULLNov 12 10:12:58.776 aest:
> > > %OSPF-5-ADJCHG: Process 100, Nbr xxx.xxx.76.248 on
> > > Port-channel1.87 from LOADING to FULL, Loading DoneNov 12
> > > 10:12:58.776 aest: OSPF: Send DBD to xxx.xxx.76.248 on
> > > Port-channel1.87 seq 0xB62 opt 0x52 flag 0x0 len 32Nov !
> > > 12 10:12:58.780 aest: OSPF: Send with youngest Key 10Nov
> > > 12 10:12:58.948 !
> > > > aest: OSPF: Reset old DR on Port-channel1.87
> > > >
> > > >
> > > > R2 logs:
> > > > Nov 12 10:12:58.436 AEST: OSPF: Cannot see ourself in
> > > hello from xxx.xxx.76.238 on Port-channel1.87, state INITNov
> > > 12 10:12:58.436 AEST: OSPF: Neighbor change Event on
> > > interface Port-channel1.87Nov 12 10:12:58.436 AEST: OSPF:
> > > DR/BDR election on Port-channel1.87 Nov 12 10:12:58.436
> > > AEST: OSPF: Elect BDR 0.0.0.0Nov 12 10:12:58.436 AEST: OSPF:
> > > Elect DR xxx.xxx.76.248Nov 12 10:12:58.436 AEST:
> > > DR: xxx.xxx.76.248
> > > (Id) BDR: none Nov 12 10:12:58.436 AEST:
> > > OSPF: Send with youngest Key 10Nov 12 10:12:58.452 AEST:
> > > OSPF: Rcv DBD from xxx.xxx.76.238 on Port-channel1.87 seq
> > > 0x1717 opt 0x52 flag 0x7 len 32 mtu 1500 state INITNov
> > > 12 10:12:58.452 AEST: OSPF: 2 Way Communication to
> > > xxx.xxx.76.238 on Port-channel1.87, state 2WAYNov 12
> > > 10:12:58.452 AEST: OSPF: Neighbor change Event on interface
> > > Port-channel1.87Nov 12 10:12:58.452 AEST: OSPF: DR/BDR
> > > election on Port-channel1.87 Nov 12 10:12:58.452 AEST: OSPF:
> > > Elect BDR xxx.xxx.76.238Nov 12 10:12:58.452 AEST: OSPF:
> > > Elect DR xxx.xxx.76!
> > > .2!
> > > > 48Nov 12 10:12:58.452 AEST:
> > > DR: xxx.xxx.76.248 (Id) BDR:
> > > xxx.xxx.76.238 (Id)Nov 12 10:12:58.452 AEST: OSPF:
> > > Port-channel1.87 Nbr xxx.xxx.76.238: Prepare dbase
> > > exchangeNov 12 10:12:58.452 AEST: OSPF: Send DBD to
> > > xxx.xxx.76.238 on Port-channel1.87 seq 0xB50 opt 0x52 flag
> > > 0x7 len 32Nov 12 10:12:58.452 AEST: OSPF: Send with youngest
> > > Key 10Nov 12 10:12:58.452 AEST: OSPF: First DBD and we are
> > > not SLAVENov 12 10:12:58.472 AEST: OSPF: Rcv DBD from
> > > xxx.xxx.76.238 on Port-channel1.87 seq 0xB50 opt 0x52 flag
> > > 0x2 len 1412 mtu 1500 state EXSTARTNov 12 10:12:58.472
> > > AEST: OSPF: NBR Negotiation Done. We are the MASTERNov 12
> > > 10:12:58.472 AEST: OSPF: Port-channel1.87 Nbr
> > > xxx.xxx.76.238: Summary list built, size 1176Nov 12
> > > 10:12:58.472 AEST: OSPF: Send DBD to xxx.xxx.76.238 on
> > > Port-channel1.87 seq 0xB51 opt 0x52 flag 0x3 len 1412Nov 12
> > > 10:12:58.472 AEST: OSPF: Send with youngest Key 10Nov 12
> > > 10:12:58.488 AEST: OSPF: Rcv DBD from xxx.xxx.76.238 on
> > > Port-channel1.87 seq 0xB51 opt 0x5!
> > > 2 !
> > > > flag 0x2 len 1412 mtu 1500 state
> > > EXCHANGENov 12 10:12:58.488 AEST: OSPF: Send DBD to
> > > xxx.xxx.76.238 on Port-channel1.87 seq 0xB52 opt 0x52 flag
> > > 0x3 len 1412
> > > >
> > > > Any assistance is greatly appreciated.
> > > > Cheers
> > > >
> > > >
> > > > > From: johnelliot67 at hotmail.com
> > > > > To: cisco-nsp at puck.nether.net
> > > > > Date: Sat, 12 Nov 2011 11:30:45 +1100
> > > > > Subject: [c-nsp] OSPF issue
> > > > >
> > > > >
> > > > > OSPF Issue
> > > > > Hope someone can assist with an ospf problem - We
> > > have an existing ospf adj running fine between R1+R2, we
> > > have just provisioned a second link, enabled ospf and we see
> > > it form adjacency which lasts ~60seconds, then R1 sees R2 as
> > > dead, and R2 Cannot see ourself in hello from R1, and then
> > > the whole thing starts again.
> > > > >
> > > > > With both adj. up(From R1):
> > > > > Neighbor ID
> > > Pri State
> > > Dead
> > > Time Address
> > > Interfacexxx.xxx.76.248
> > > 1 FULL/DR
> > > 00:00:00
> > > xxx.xxx.66.62 Port-channel1.87xxx.xxx.76.248
> > > 1 FULL/DR
> > > 00:00:39 xxx.xxx.66.2
> > > FastEthernet3/0
> > > > >
> > > > > Then "new" link loses adj. after ~60seconds
> > > > > Neighbor ID
> > > Pri State
> > > Dead
> > > Time Address
> > > Interfacexxx.xxx.76.248
> > > 1 FULL/DR
> > > 00:00:38 xxx.xxx.66.2
> > > FastEthernet3/0
> > > > >
> > > > > NB - pings to/from both R1+R2 are clean(No
> > > loss/excessive latency), and both ends(Ints) set to mtu of
> > > 1500.
> > > > >
> > > > > R1 logs
> > > > >
> > > > > Nov 12 10:12:48.716 aest: OSPF: xxx.xxx.76.248
> > > address xxx.xxx.66.62 on Port-channel1.87 is deadNov 12
> > > 10:12:48.716 aest: OSPF: xxx.xxx.76.248 address
> > > xxx.xxx.66.62 on Port-channel1.87 is dead, state DOWNNov 12
> > > 10:12:48.716 aest: %OSPF-5-ADJCHG: Process 100, Nbr
> > > xxx.xxx.76.248 on Port-channel1.87 from FULL to DOWN,
> > > Neighbor Down: Dead timer expiredNov 12 10:12:48.716 aest:
> > > OSPF: Neighbor change Event on interface Port-channel1.87Nov
> > > 12 10:12:48.716 aest: OSPF: DR/BDR election on
> > > Port-channel1.87 Nov 12 10:12:48.716 aest: OSPF: Elect BDR
> > > xxx.xxx.76.238Nov 12 10:12:48.716 aest: OSPF: Elect DR
> > > xxx.xxx.76.238Nov 12 10:12:48.716 aest: OSPF: Elect BDR
> > > 0.0.0.0Nov 12 10:12:48.716 aest: OSPF: Elect DR
> > > xxx.xxx.76.238Nov 12 10:12:48.716 aest:
> > > DR: xxx.xxx.76.238 (Id) BDR: none
> > > Nov 12 10:12:48.716 aest: OSPF: Reset Port-channel1.87 flush
> > > timerNov 12 10:12:48.716 aest: OSPF: Remember old DR
> > > xxx.xxx.76.248 (id)Nov 12 10:12:49.216 aest: OSPF: Send with
> > > youngest Key 10Nov 12 10:!
> > > 12!
> > > > :4!
> > > > > 9.216 aest: OSPF: Send with youngest Key
> > > 10Nov 12 10:12:49.216 aest: OSPF: Send with youngest Key
> > > 10Nov 12 10:12:49.216 aest: OSPF: Build router LSA for area
> > > 0.0.0.0, router ID xxx.xxx.76.238, seq 0x80014360, process
> > > 100Nov 12 10:12:49.216 aest: OSPF: No full nbrs to build Net
> > > Lsa for interface Port-channel1.87Nov 12 10:12:51.716 aest:
> > > OSPF: Send with youngest Key 10Nov 12 10:12:51.732 aest:
> > > OSPF: Send with youngest Key 10Nov 12 10:12:58.432 aest:
> > > OSPF: Send with youngest Key 10Nov 12 10:12:58.432 aest:
> > > OSPF: Send with youngest Key 10Nov 12 10:12:58.432 aest:
> > > OSPF: Send with youngest Key 10Nov 12 10:12:58.432 aest:
> > > OSPF: Send with youngest Key 10Nov 12 10:12:58.448 aest:
> > > OSPF: 2 Way Communication to xxx.xxx.76.248 on
> > > Port-channel1.87, state 2WAYNov 12 10:12:58.448 aest: OSPF:
> > > Neighbor change Event on interface Port-channel1.87Nov 12
> > > 10:12:58.448 aest: OSPF: DR/BDR election on Port-channel1.87
> > > Nov 12 10:12:58.448 aest: OSPF: Elect BDR 0.0.0.0Nov 12
> > > 10:12:58.448 aest: OSP!
> > > F:!
> > > > E!
> > > > > lect DR xxx.xxx.76.248Nov 12 10:12:58.448
> > > aest: OSPF: Elect BDR xxx.xxx.76.238Nov 12 10:12:58.448
> > > aest: OSPF: Elect DR xxx.xxx.76.248Nov 12 10:12:58.448
> > > aest: DR: xxx.xxx.76.248
> > > (Id) BDR: xxx.xxx.76.238 (Id)Nov 12
> > > 10:12:58.448 aest: OSPF: Send DBD to xxx.xxx.76.248 on
> > > Port-channel1.87 seq 0x1717 opt 0x52 flag 0x7 len 32Nov 12
> > > 10:12:58.448 aest: OSPF: Send with youngest Key 10Nov 12
> > > 10:12:58.448 aest: OSPF: Set Port-channel1.87 flush timerNov
> > > 12 10:12:58.448 aest: OSPF: Remember old DR xxx.xxx.76.238
> > > (id)Nov 12 10:12:58.448 aest: OSPF: Neighbor change Event on
> > > interface Port-channel1.87Nov 12 10:12:58.448 aest: OSPF:
> > > DR/BDR election on Port-channel1.87 Nov 12 10:12:58.448
> > > aest: OSPF: Elect BDR xxx.xxx.76.238Nov 12 10:12:58.448
> > > aest: OSPF: Elect DR xxx.xxx.76.248Nov 12 10:12:58.448
> > > aest: DR: xxx.xxx.76.248
> > > (Id) BDR: xxx.xxx.76.238 (Id)Nov 12
> > > 10:12:58.464 aest: OSPF: Rcv DBD from xxx.xxx.76.248 on
> > > Port-channel1.87 seq 0xB50 opt 0x52 flag 0x7 len 32
> > > mtu 1!
> > > 50!
> > > > 0 state EXSTARTNov 12 10:12:58.464 aest: OSPF:
> > > NBR Negotiation Done. We a!
> > > > > re the SLAVENov 12 10:12:58.464 aest: OSPF:
> > > Send DBD to xxx.xxx.76.248 on Port-channel1.87 seq 0xB50 opt
> > > 0x52 flag 0x2 len 1412Nov 12 10:12:58.464 aest: OSPF: Send
> > > with youngest Key 10Nov 12 10:12:58.484 aest: OSPF: Rcv DBD
> > > from xxx.xxx.76.248 on Port-channel1.87 seq 0xB51 opt 0x52
> > > flag 0x3 len 1412 mtu 1500 state EXCHANGENov 12
> > > 10:12:58.484 aest: OSPF: Send DBD to xxx.xxx.76.248 on
> > > Port-channel1.87 seq 0xB51 opt 0x52 flag 0x2 len 1412Nov 12
> > > 10:12:58.484 aest: OSPF: Send with youngest Key 10Nov 12
> > > 10:12:58.500 aest: OSPF: Rcv DBD from xxx.xxx.76.248 on
> > > Port-channel1.87 seq 0xB52 opt 0x52 flag 0x3 len 1412
> > > mtu 1500 state EXCHANGENov 12 10:12:58.500 aest: OSPF: Send
> > > DBD to xxx.xxx.76.248 on Port-channel1.87 seq 0xB52 opt 0x52
> > > flag 0x2 len 1412Nov 12 10:12:58.500 aest: OSPF: Send with
> > > youngest Key 10Nov 12 10:12:58.520 aest: OSPF: Rcv DBD from
> > > xxx.xxx.76.248 on Port-channel1.87 seq 0xB53 opt 0x52 flag
> > > 0x3 len 1412 mtu 1500 state EXCHANGENov 12
> > > 10:12:58.520 aest: OSPF: S!
> > > en!
> > > > d !
> > > > > DBD to xxx.xxx.76.248 on Port-channel1.87
> > > seq 0xB53 opt 0x52 flag 0x2 len 1412Nov 12 10:12:58.520
> > > aest: OSPF: Send with youngest Key 10Nov 12 10:12:58.536
> > > aest: OSPF: Rcv DBD from xxx.xxx.76.248 on Port-channel1.87
> > > seq 0xB54 opt 0x52 flag 0x3 len 1412 mtu 1500 state
> > > EXCHANGENov 12 10:12:58.536 aest: OSPF: Send DBD to
> > > xxx.xxx.76.248 on Port-channel1.87 seq 0xB54 opt 0x52 flag
> > > 0x2 len 1412Nov 12 10:12:58.536 aest: OSPF: Send with
> > > youngest Key 10Nov 12 10:12:58.552 aest: OSPF: Rcv DBD from
> > > xxx.xxx.76.248 on Port-channel1.87 seq 0xB55 opt 0x52 flag
> > > 0x3 len 1412 mtu 1500 state EXCHANGENov 12
> > > 10:12:58.552 aest: OSPF: Send DBD to xxx.xxx.76.248 on
> > > Port-channel1.87 seq 0xB55 opt 0x52 flag 0x2 len 1412Nov 12
> > > 10:12:58.552 aest: OSPF: Send with youngest Key 10Nov 12
> > > 10:12:58.572 aest: OSPF: Rcv DBD from xxx.xxx.76.248 on
> > > Port-channel1.87 seq 0xB56 opt 0x52 flag 0x3 len 1412
> > > mtu 1500 state EXCHANGENov 12 10:12:58.572 aest: OSPF: Send
> > > DBD to xxx.xxx.76.248 on Port-channel1.87 seq!
> > > 0!
> > > > xB56 opt 0x52 flag 0x2 len 1412Nov 12
> > > 10:12:58.572 aest: OSPF: Send with !
> > > > > youngest Key 10Nov 12 10:12:58.588 aest:
> > > OSPF: Rcv DBD from xxx.xxx.76.248 on Port-channel1.87 seq
> > > 0xB57 opt 0x52 flag 0x3 len 1412 mtu 1500 state
> > > EXCHANGENov 12 10:12:58.588 aest: OSPF: Send DBD to
> > > xxx.xxx.76.248 on Port-channel1.87 seq 0xB57 opt 0x52 flag
> > > 0x2 len 1412Nov 12 10:12:58.588 aest: OSPF: Send with
> > > youngest Key 10Nov 12 10:12:58.604 aest: OSPF: Rcv DBD from
> > > xxx.xxx.76.248 on Port-channel1.87 seq 0xB58 opt 0x52 flag
> > > 0x3 len 1412 mtu 1500 state EXCHANGENov 12
> > > 10:12:58.604 aest: OSPF: Send DBD to xxx.xxx.76.248 on
> > > Port-channel1.87 seq 0xB58 opt 0x52 flag 0x2 len 1412Nov 12
> > > 10:12:58.604 aest: OSPF: Send with youngest Key 10Nov 12
> > > 10:12:58.624 aest: OSPF: Rcv DBD from xxx.xxx.76.248 on
> > > Port-channel1.87 seq 0xB59 opt 0x52 flag 0x3 len 1412
> > > mtu 1500 state EXCHANGENov 12 10:12:58.624 aest: OSPF: Send
> > > DBD to xxx.xxx.76.248 on Port-channel1.87 seq 0xB59 opt 0x52
> > > flag 0x2 len 1412Nov 12 10:12:58.624 aest: OSPF: Send with
> > > youngest Key 10Nov 12 10:12:58.640 aest: OSPF!
> > > : !
> > > > Rc!
> > > > > v DBD from xxx.xxx.76.248 on
> > > Port-channel1.87 seq 0xB5A opt 0x52 flag 0x3 len 1412
> > > mtu 1500 state EXCHANGENov 12 10:12:58.640 aest: OSPF: Send
> > > DBD to xxx.xxx.76.248 on Port-channel1.87 seq 0xB5A opt 0x52
> > > flag 0x2 len 1412Nov 12 10:12:58.640 aest: OSPF: Send with
> > > youngest Key 10Nov 12 10:12:58.656 aest: OSPF: Rcv DBD from
> > > xxx.xxx.76.248 on Port-channel1.87 seq 0xB5B opt 0x52 flag
> > > 0x3 len 1412 mtu 1500 state EXCHANGENov 12
> > > 10:12:58.656 aest: OSPF: Send DBD to xxx.xxx.76.248 on
> > > Port-channel1.87 seq 0xB5B opt 0x52 flag 0x2 len 1412Nov 12
> > > 10:12:58.656 aest: OSPF: Send with youngest Key 10Nov 12
> > > 10:12:58.676 aest: OSPF: Rcv DBD from xxx.xxx.76.248 on
> > > Port-channel1.87 seq 0xB5C opt 0x52 flag 0x3 len 1412
> > > mtu 1500 state EXCHANGENov 12 10:12:58.676 aest: OSPF: Send
> > > DBD to xxx.xxx.76.248 on Port-channel1.87 seq 0xB5C opt 0x52
> > > flag 0x2 len 1412Nov 12 10:12:58.676 aest: OSPF: Send with
> > > youngest Key 10Nov 12 10:12:58.692 aest: OSPF: Rcv DBD from
> > > xxx.xxx.76.248 on Port-channel1.87!
> > > s!
> > > > eq 0xB5D opt 0x52 flag 0x3 len 1412 mtu
> > > 1500 state EXCHANGENov 12 10:12:!
> > > > > 58.692 aest: OSPF: Send DBD to
> > > xxx.xxx.76.248 on Port-channel1.87 seq 0xB5D opt 0x52 flag
> > > 0x2 len 1412Nov 12 10:12:58.692 aest: OSPF: Send with
> > > youngest Key 10Nov 12 10:12:58.708 aest: OSPF: Rcv DBD from
> > > xxx.xxx.76.248 on Port-channel1.87 seq 0xB5E opt 0x52 flag
> > > 0x3 len 1412 mtu 1500 state EXCHANGENov 12
> > > 10:12:58.708 aest: OSPF: Send DBD to xxx.xxx.76.248 on
> > > Port-channel1.87 seq 0xB5E opt 0x52 flag 0x2 len 1412Nov 12
> > > 10:12:58.708 aest: OSPF: Send with youngest Key 10Nov 12
> > > 10:12:58.728 aest: OSPF: Rcv DBD from xxx.xxx.76.248 on
> > > Port-channel1.87 seq 0xB5F opt 0x52 flag 0x3 len 1412
> > > mtu 1500 state EXCHANGENov 12 10:12:58.728 aest: OSPF: Send
> > > DBD to xxx.xxx.76.248 on Port-channel1.87 seq 0xB5F opt 0x52
> > > flag 0x2 len 1412Nov 12 10:12:58.728 aest: OSPF: Send with
> > > youngest Key 10Nov 12 10:12:58.744 aest: OSPF: Rcv DBD from
> > > xxx.xxx.76.248 on Port-channel1.87 seq 0xB60 opt 0x52 flag
> > > 0x3 len 1412 mtu 1500 state EXCHANGENov 12
> > > 10:12:58.744 aest: OSPF: Send DBD to xxx.xxx.76.248!
> > > o!
> > > > n !
> > > > > Port-channel1.87 seq 0xB60 opt 0x52 flag
> > > 0x2 len 1412Nov 12 10:12:58.744 aest: OSPF: Send with
> > > youngest Key 10Nov 12 10:12:58.760 aest: OSPF: Rcv DBD from
> > > xxx.xxx.76.248 on Port-channel1.87 seq 0xB61 opt 0x52 flag
> > > 0x3 len 1412 mtu 1500 state EXCHANGENov 12
> > > 10:12:58.760 aest: OSPF: Send DBD to xxx.xxx.76.248 on
> > > Port-channel1.87 seq 0xB61 opt 0x52 flag 0x2 len 92Nov 12
> > > 10:12:58.760 aest: OSPF: Send with youngest Key 10Nov 12
> > > 10:12:58.776 aest: OSPF: Rcv DBD from xxx.xxx.76.248 on
> > > Port-channel1.87 seq 0xB62 opt 0x52 flag 0x1 len 92
> > > mtu 1500 state EXCHANGENov 12 10:12:58.776 aest: OSPF:
> > > Exchange Done with xxx.xxx.76.248 on Port-channel1.87Nov 12
> > > 10:12:58.776 aest: OSPF: Synchronized with xxx.xxx.76.248 on
> > > Port-channel1.87, state FULLNov 12 10:12:58.776 aest:
> > > %OSPF-5-ADJCHG: Process 100, Nbr xxx.xxx.76.248 on
> > > Port-channel1.87 from LOADING to FULL, Loading DoneNov 12
> > > 10:12:58.776 aest: OSPF: Send DBD to xxx.xxx.76.248 on
> > > Port-channel1.87 seq 0xB62 opt 0x52 flag 0x0 len 32No!
> > > v !
> > > > 12 10:12:58.780 aest: OSPF: Send with youngest
> > > Key 10Nov 12 10:12:58.948 !
> > > > > aest: OSPF: Reset old DR on
> > > Port-channel1.87
> > > > >
> > > > >
> > > > >
> > > > > R2 logs:
> > > > >
> > > > > Nov 12 10:12:58.436 AEST: OSPF: Cannot see
> > > ourself in hello from xxx.xxx.76.238 on Port-channel1.87,
> > > state INITNov 12 10:12:58.436 AEST: OSPF: Neighbor change
> > > Event on interface Port-channel1.87Nov 12 10:12:58.436 AEST:
> > > OSPF: DR/BDR election on Port-channel1.87 Nov 12
> > > 10:12:58.436 AEST: OSPF: Elect BDR 0.0.0.0Nov 12
> > > 10:12:58.436 AEST: OSPF: Elect DR xxx.xxx.76.248Nov 12
> > > 10:12:58.436 AEST: DR:
> > > xxx.xxx.76.248 (Id) BDR: none Nov 12
> > > 10:12:58.436 AEST: OSPF: Send with youngest Key 10Nov 12
> > > 10:12:58.452 AEST: OSPF: Rcv DBD from xxx.xxx.76.238 on
> > > Port-channel1.87 seq 0x1717 opt 0x52 flag 0x7 len 32
> > > mtu 1500 state INITNov 12 10:12:58.452 AEST: OSPF: 2 Way
> > > Communication to xxx.xxx.76.238 on Port-channel1.87, state
> > > 2WAYNov 12 10:12:58.452 AEST: OSPF: Neighbor change Event on
> > > interface Port-channel1.87Nov 12 10:12:58.452 AEST: OSPF:
> > > DR/BDR election on Port-channel1.87 Nov 12 10:12:58.452
> > > AEST: OSPF: Elect BDR xxx.xxx.76.238Nov 12 10:12:58.452
> > > AEST: OSPF: Elect DR xxx.xxx.!
> > > 76!
> > > > .2!
> > > > > 48Nov 12 10:12:58.452 AEST:
> > > DR: xxx.xxx.76.248 (Id) BDR:
> > > xxx.xxx.76.238 (Id)Nov 12 10:12:58.452 AEST: OSPF:
> > > Port-channel1.87 Nbr xxx.xxx.76.238: Prepare dbase
> > > exchangeNov 12 10:12:58.452 AEST: OSPF: Send DBD to
> > > xxx.xxx.76.238 on Port-channel1.87 seq 0xB50 opt 0x52 flag
> > > 0x7 len 32Nov 12 10:12:58.452 AEST: OSPF: Send with youngest
> > > Key 10Nov 12 10:12:58.452 AEST: OSPF: First DBD and we are
> > > not SLAVENov 12 10:12:58.472 AEST: OSPF: Rcv DBD from
> > > xxx.xxx.76.238 on Port-channel1.87 seq 0xB50 opt 0x52 flag
> > > 0x2 len 1412 mtu 1500 state EXSTARTNov 12 10:12:58.472
> > > AEST: OSPF: NBR Negotiation Done. We are the MASTERNov 12
> > > 10:12:58.472 AEST: OSPF: Port-channel1.87 Nbr
> > > xxx.xxx.76.238: Summary list built, size 1176Nov 12
> > > 10:12:58.472 AEST: OSPF: Send DBD to xxx.xxx.76.238 on
> > > Port-channel1.87 seq 0xB51 opt 0x52 flag 0x3 len 1412Nov 12
> > > 10:12:58.472 AEST: OSPF: Send with youngest Key 10Nov 12
> > > 10:12:58.488 AEST: OSPF: Rcv DBD from xxx.xxx.76.238 on
> > > Port-channel1.87 seq 0xB51 opt 0!
> > > x5!
> > > > 2 !
> > > > > flag 0x2 len 1412 mtu 1500 state
> > > EXCHANGENov 12 10:12:58.488 AEST: OSPF: Send DBD to
> > > xxx.xxx.76.238 on Port-channel1.87 seq 0xB52 opt 0x52 flag
> > > 0x3 len 1412
> > > > >
> > > > >
> > > > > Any assistance is greatly appreciated.
> > > > >
> > > > > Cheers
> > > > >
> > >
> > >
> > >
> > > > > _______________________________________________
> > > > > cisco-nsp mailing list cisco-nsp at puck.nether.net
> > > > > https://puck.nether.net/mailman/listinfo/cisco-nsp
> > > > > archive at http://puck.nether.net/pipermail/cisco-nsp/
> > > >
> > >
> > >
> > >
> > > > _______________________________________________
> > > > cisco-nsp mailing list cisco-nsp at puck.nether.net
> > > > https://puck.nether.net/mailman/listinfo/cisco-nsp
> > > > archive at http://puck.nether.net/pipermail/cisco-nsp/
> > >
> > >
> > >
> > >
> > > _______________________________________________
> > > cisco-nsp mailing list cisco-nsp at puck.nether.net
> > > https://puck.nether.net/mailman/listinfo/cisco-nsp
> > > archive at http://puck.nether.net/pipermail/cisco-nsp/
> > >
>
> _______________________________________________
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