OSPF Multipont send multicast hello's! really?

EdTheLadEdTheLad Member Posts: 2,111 ■■■■□□□□□□
in CCIE
I'm thinking i should have one big ospf thread lol.

I've got 2 routers R2 and R5 connected via a FR cloud, both setup as ospf network type point-to-multipoint, broadcast capability is added R5's dlci and R2s dlci is just unicast.

Interestingly enough the adjacency establishes and drop after dead interval expires and cycles through this behavior continuously. It turns out ospf multipoint interfaces will respond to the first received multicast hello with a unicast hello to complete the init state, all other states send unicast messages until the adjacency is established, after which hellos are multicast and hence the dead timer will expire on R5 due to no hello's being received from R2.

Same neighbor establishment behavior is seen when both sides support broadcast i.e. after init stage everything is unicast until adjacency forms.

If neither side supports broadcast, the neighbor cant establish as it cant get past the init stage, this is why i've never noticed this before.

Good to be aware of this as with long dead interval timers, you might be wondering why you are seeing network instability.



Rack1R5(config-router)#no shutdown
Rack1R5(config-router)#
*Mar 6 06:31:40.123: OSPF-1 ADJ Se8/0: Interface going Up
*Mar 6 06:31:40.123: IP: s=155.1.0.5 (local), d=224.0.0.5 (Serial8/0), len 76, sending broad/multicast, proto=89
*Mar 6 06:31:40.123: IP: s=155.1.0.5 (local), d=224.0.0.5 (Serial8/0), len 76, sending full packet, proto=89
*Mar 6 06:31:40.275: IP: s=155.1.0.2 (Serial8/0), d=155.1.0.5, len 80, rcvd 0, proto=89
*Mar 6 06:31:40.276: IP: s=155.1.0.2 (Serial8/0), d=155.1.0.5, len 80, input feature, proto=89, packet consumed, MCI Check(8icon_cool.gif, rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
*Mar 6 06:31:40.276: OSPF-1 ADJ Se8/0: 2 Way Communication to 150.1.2.2, state 2WAY
*Mar 6 06:31:40.276: OSPF-1 ADJ Se8/0: Nbr 150.1.2.2: Prepare dbase exchange
*Mar 6 06:31:40.276: OSPF-1 ADJ Se8/0: Send DBD to 150.1.2.2 seq 0x9C8 opt 0x52 flag 0x7 len 32
*Mar 6 06:31:40.276: IP: s=155.1.0.5 (local), d=155.1.0.2 (Serial8/0), len 64, sending, proto=89
*Mar 6 06:31:40.276: IP: s=155.1.0.5 (local), d=155.1.0.2 (Serial8/0), len 64, sending full packet, proto=89
*Mar 6 06:31:40.276: IP: s=155.1.0.5 (local), d=155.1.0.2 (Serial8/0), len 80, sending, proto=89
*Mar 6 06:31:40.276: IP: s=155.1.0.5 (local), d=155.1.0.2 (Serial8/0), len 80, sending full packet, proto=89
*Mar 6 06:31:40.375: IP: s=155.1.0.2 (Serial8/0), d=155.1.0.5, len 64, rcvd 0, proto=89
*Mar 6 06:31:40.375: IP: s=155.1.0.2 (Serial8/0), d=155.1.0.5, len 64, input feature, proto=89, packet consumed, MCI Check(8icon_cool.gif, rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
*Mar 6 06:31:40.375: OSPF-1 ADJ Se8/0: Rcv DBD from 150.1.2.2 seq 0x12DD opt 0x52 flag 0x7 len 32 mtu 1500 state EXSTART
*Mar 6 06:31:40.375: OSPF-1 ADJ Se8/0: First DBD and we are not SLAVE
*Mar 6 06:31:40.411: IP: s=155.1.0.2 (Serial8/0), d=155.1.0.5, len 84, rcvd 0, proto=89
*Mar 6 06:31:40.411: IP: s=155.1.0.2 (Serial8/0), d=155.1.0.5, len 84, input feature, proto=89, packet consumed, MCI Check(8icon_cool.gif, rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
*Mar 6 06:31:40.411: OSPF-1 ADJ Se8/0: Rcv DBD from 150.1.2.2 seq 0x9C8 opt 0x52 flag 0x2 len 52 mtu 1500 state EXSTART
*Mar 6 06:31:40.411: OSPF-1 ADJ Se8/0: NBR Negotiation Done. We are the MASTER
*Mar 6 06:31:40.411: OSPF-1 ADJ Se8/0: Nbr 150.1.2.2: Summary list built, size 0
*Mar 6 06:31:40.411: OSPF-1 ADJ Se8/0: Send DBD to 150.1.2.2 seq 0x9C9 opt 0x52 flag 0x1 len 32
*Mar 6 06:31:40.411: IP: s=155.1.0.5 (local), d=155.1.0.2 (Serial8/0), len 64, sending, proto=89
*Mar 6 06:31:40.411: IP: s=155.1.0.5 (local), d=155.1.0.2 (Serial8/0), len 64, sending full packet, proto=89
*Mar 6 06:31:40.562: IP: s=155.1.0.2 (Serial8/0), d=155.1.0.5, len 64, rcvd 0, proto=89
*Mar 6 06:31:40.562: IP: s=155.1.0.2 (Serial8/0), d=155.1.0.5, len 64, input feature, proto=89, packet consumed, MCI Check(8icon_cool.gif, rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
*Mar 6 06:31:40.562: OSPF-1 ADJ Se8/0: Rcv DBD from 150.1.2.2 seq 0x9C9 opt 0x52 flag 0x0 len 32 mtu 1500 state EXCHANGE
*Mar 6 06:31:40.562: OSPF-1 ADJ Se8/0: Exchange Done with 150.1.2.2
*Mar 6 06:31:40.562: OSPF-1 ADJ Se8/0: Send LS REQ to 150.1.2.2 length 36 LSA count 1
*Mar 6 06:31:40.562: IP: s=155.1.0.5 (local), d=155.1.0.2 (Serial8/0), len 56, sending, proto=89
*Mar 6 06:31:40.562: IP: s=155.1.0.5 (local), d=155.1.0.2 (Serial8/0), len 56, sending full packet, proto=89
*Mar 6 06:31:40.636: IP: s=155.1.0.5 (local), d=155.1.0.2 (Serial8/0), len 84, sending, proto=89
*Mar 6 06:31:40.636: IP: s=155.1.0.5 (local), d=155.1.0.2 (Serial8/0), len 84, sending full packet, proto=89
*Mar 6 06:31:40.706: IP: s=155.1.0.2 (Serial8/0), d=155.1.0.5, len 84, rcvd 0, proto=89
*Mar 6 06:31:40.706: IP: s=155.1.0.2 (Serial8/0), d=155.1.0.5, len 84, input feature, proto=89, packet consumed, MCI Check(8icon_cool.gif, rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
*Mar 6 06:31:40.706: OSPF-1 ADJ Se8/0: Rcv LS UPD from 150.1.2.2 length 64 LSA count 1
*Mar 6 06:31:40.706: OSPF-1 ADJ Se8/0: Synchronized with 150.1.2.2, state FULL
*Mar 6 06:31:40.706: %OSPF-5-ADJCHG: Process 1, Nbr 150.1.2.2 on Serial8/0 from LOADING to FULL, Loading Done
Rack1R5(config-router)#
*Mar 6 06:31:40.706: OSPF-1 ADJ Se8/0: Nbr 150.1.2.2: Clean-up dbase exchange
*Mar 6 06:31:41.062: IP: s=155.1.0.2 (Serial8/0), d=155.1.0.5, len 96, rcvd 0, proto=89
*Mar 6 06:31:41.062: IP: s=155.1.0.2 (Serial8/0), d=155.1.0.5, len 96, input feature, proto=89, packet consumed, MCI Check(8icon_cool.gif, rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
Rack1R5(config-router)#
*Mar 6 06:31:43.224: IP: s=155.1.0.5 (local), d=155.1.0.2 (Serial8/0), len 84, sending, proto=89
*Mar 6 06:31:43.224: IP: s=155.1.0.5 (local), d=155.1.0.2 (Serial8/0), len 84, sending full packet, proto=89
*Mar 6 06:31:43.261: IP: s=155.1.0.2 (Serial8/0), d=155.1.0.5, len 64, rcvd 0, proto=89
*Mar 6 06:31:43.261: IP: s=155.1.0.2 (Serial8/0), d=155.1.0.5, len 64, input feature, proto=89, packet consumed, MCI Check(8icon_cool.gif, rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
Rack1R5(config-router)#
*Mar 6 06:31:45.639: IP: s=155.1.0.5 (local), d=155.1.0.2 (Serial8/0), len 96, sending, proto=89
*Mar 6 06:31:45.639: IP: s=155.1.0.5 (local), d=155.1.0.2 (Serial8/0), len 96, sending full packet, proto=89
Rack1R5(config-router)#d
*Mar 6 06:31:48.309: IP: s=155.1.0.2 (Serial8/0), d=155.1.0.5, len 64, rcvd 0, proto=89
*Mar 6 06:31:48.309: IP: s=155.1.0.2 (Serial8/0), d=155.1.0.5, len 64, input feature, proto=89, packet consumed, MCI Check(8icon_cool.gif, rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
Rack1R5(config-router)#do sh ip os
*Mar 6 06:31:49.995: IP: s=155.1.0.5 (local), d=224.0.0.5 (Serial8/0), len 80, sending broad/multicast, proto=89
*Mar 6 06:31:49.995: IP: s=155.1.0.5 (local), d=224.0.0.5 (Serial8/0), len 80, sending full packet, proto=89
Rack1R5(config-router)#do sh ip ospf nei
% Ambiguous command: "do sh ip ospf nei"
Rack1R5(config-router)#do sh ip ospf nei

Neighbor ID Pri State Dead Time Address Interface
150.1.2.2 0 FULL/ - 00:00:35 155.1.0.2 Serial8/0

Rack1R5(config-router)#do un all
All possible debugging has been turned off
Rack1R5(config-router)#






Rack1R2#
*Mar 6 06:31:40.198: IP: s=155.1.0.5 (Serial8/0), d=224.0.0.5, len 76, rcvd 0, proto=89
*Mar 6 06:31:40.198: IP: s=155.1.0.5 (Serial8/0), d=224.0.0.5, len 76, input feature, proto=89, packet consumed, MCI Check(8icon_cool.gif, rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
*Mar 6 06:31:40.198: IP: s=155.1.0.2 (local), d=155.1.0.5 (Serial8/0), len 80, sending, proto=89
*Mar 6 06:31:40.199: IP: s=155.1.0.2 (local), d=155.1.0.5 (Serial8/0), len 80, sending full packet, proto=89
*Mar 6 06:31:40.371: IP: s=155.1.0.5 (Serial8/0), d=155.1.0.2, len 64, rcvd 0, proto=89
*Mar 6 06:31:40.371: IP: s=155.1.0.5 (Serial8/0), d=155.1.0.2, len 64, input feature, proto=89, packet consumed, MCI Check(8icon_cool.gif, rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
*Mar 6 06:31:40.371: IP: s=155.1.0.5 (Serial8/0), d=155.1.0.2, len 80, rcvd 0, proto=89
*Mar 6 06:31:40.371: IP: s=155.1.0.5 (Serial8/0), d=155.1.0.2, len 80, input feature, proto=89, packet consumed, MCI Check(8icon_cool.gif, rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
*Mar 6 06:31:40.371: OSPF-1 ADJ Se8/0: 2 Way Communication to 150.1.5.5, state 2WAY
*Mar 6 06:31:40.371: OSPF-1 ADJ Se8/0: Nbr 150.1.5.5: Prepare dbase exchange
*Mar 6 06:31:40.371: OSPF-1 ADJ Se8/0: Send DBD to 150.1.5.5 seq 0x12DD opt 0x52 flag 0x7 len 32
*Mar 6 06:31:40.371: IP: s=155.1.0.2 (local), d=155.1.0.5 (Serial8/0), len 64, sending, proto=89
*Mar 6 06:31:40.371: IP: s=155.1.0.2 (local), d=155.1.0.5 (Serial8/0), len 64, sending full packet, proto=89
*Mar 6 06:31:40.371: OSPF-1 ADJ Se8/0: Rcv DBD from 150.1.5.5 seq 0x9C8 opt 0x52 flag 0x7 len 32 mtu 1500 state EXSTART
*Mar 6 06:31:40.374: OSPF-1 ADJ Se8/0: NBR Negotiation Done. We are the SLAVE
*Mar 6 06:31:40.374: OSPF-1 ADJ Se8/0: Nbr 150.1.5.5: Summary list built, size 1
*Mar 6 06:31:40.374: OSPF-1 ADJ Se8/0: Send DBD to 150.1.5.5 seq 0x9C8 opt 0x52 flag 0x2 len 52
*Mar 6 06:31:40.374: IP: s=155.1.0.2 (local), d=155.1.0.5 (Serial8/0), len 84, sending, proto=89
*Mar 6 06:31:40.374: IP: s=155.1.0.2 (local), d=155.1.0.5 (Serial8/0), len 84, sending full packet, proto=89
*Mar 6 06:31:40.485: IP: s=155.1.0.5 (Serial8/0), d=155.1.0.2, len 64, rcvd 0, proto=89
*Mar 6 06:31:40.485: IP: s=155.1.0.5 (Serial8/0), d=155.1.0.2, len 64, input feature, proto=89, packet consumed, MCI Check(8icon_cool.gif, rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
*Mar 6 06:31:40.486: OSPF-1 ADJ Se8/0: Rcv DBD from 150.1.5.5 seq 0x9C9 opt 0x52 flag 0x1 len 32 mtu 1500 state EXCHANGE
*Mar 6 06:31:40.486: OSPF-1 ADJ Se8/0: Exchange Done with 150.1.5.5
*Mar 6 06:31:40.486: OSPF-1 ADJ Se8/0: Synchronized with 150.1.5.5, state FULL
*Mar 6 06:31:40.486: %OSPF-5-ADJCHG: Process 1, Nbr 150.1.5.5 on Serial8/0 from LOADING to FULL, Loading Done
*Mar 6 06:31:40.486: OSPF-1 ADJ Se8/0: Send DBD to 150.1.5.5 seq 0x9C9 opt 0x52 flag 0x0 len 32
*Mar 6 06:31:40.486: IP: s=155.1.0.2 (local), d=155.1.0.5 (Serial8/0), len 64, sending, proto=89
*Mar 6 06:31:40.486: IP: s=155.1.0.2 (local), d=155.1.0.5 (Serial8/0), len 64, sending full packet, proto=89
*Mar 6 06:31:40.637: IP: s=155.1.0.5 (Serial8/0), d=155.1.0.2, len 56, rcvd 0, proto=89
*Mar 6 06:31:40.637: IP: s=155.1.0.5 (Serial8/0), d=155.1.0.2, len 56, input feature, proto=89, packet consumed, MCI Check(8icon_cool.gif, rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
*Mar 6 06:31:40.638: OSPF-1 ADJ Se8/0: Rcv LS REQ from 150.1.5.5 length 36 LSA count 1
*Mar 6 06:31:40.638: IP: s=155.1.0.2 (local), d=155.1.0.5 (Serial8/0), len 84, sending, proto=89
*Mar 6 06:31:40.638: IP: s=155.1.0.2 (local), d=155.1.0.5 (Serial8/0), len 84, sending full packet, proto=89
*Mar 6 06:31:40.669: IP: s=155.1.0.5 (Serial8/0), d=155.1.0.2, len 84, rcvd 0, proto=89
*Mar 6 06:31:40.669: IP: s=155.1.0.5 (Serial8/0), d=155.1.0.2, len 84, input feature, proto=89, packet consumed, MCI Check(8icon_cool.gif, rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
*Mar 6 06:31:40.988: IP: s=155.1.0.2 (local), d=155.1.0.5 (Serial8/0), len 96, sending, proto=89
*Mar 6 06:31:40.988: IP: s=155.1.0.2 (local), d=155.1.0.5 (Serial8/0), len 96, sending full packet
Rack1R2#, proto=89
Rack1R2#
*Mar 6 06:31:43.187: IP: s=155.1.0.2 (local), d=155.1.0.5 (Serial8/0), len 64, sending, proto=89
*Mar 6 06:31:43.187: IP: s=155.1.0.2 (local), d=155.1.0.5 (Serial8/0), len 64, sending full packet, proto=89
*Mar 6 06:31:43.298: IP: s=155.1.0.5 (Serial8/0), d=155.1.0.2, len 84, rcvd 0, proto=89
*Mar 6 06:31:43.298: IP: s=155.1.0.5 (Serial8/0), d=155.1.0.2, len 84, input feature, proto=89, packet consumed, MCI Check(8icon_cool.gif, rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
Rack1R2#
*Mar 6 06:31:45.709: IP: s=155.1.0.5 (Serial8/0), d=155.1.0.2, len 96, rcvd 0, proto=89
*Mar 6 06:31:45.709: IP: s=155.1.0.5 (Serial8/0), d=155.1.0.2, len 96, input feature, proto=89, packet consumed, MCI Check(8icon_cool.gif, rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
Rack1R2#
*Mar 6 06:31:47.981: IP: s=155.1.0.2 (local), d=224.0.0.5 (Serial8/0), len 80, sending broad/multicast, proto=89
*Mar 6 06:31:47.981: IP: s=155.1.0.2 (local), d=224.0.0.5 (Serial8/0), len 80, encapsulation failed, proto=89
*Mar 6 06:31:48.233: IP: s=155.1.0.2 (local), d=155.1.0.5 (Serial8/0), len 64, sending, proto=89
*Mar 6 06:31:48.233: IP: s=155.1.0.2 (local), d=155.1.0.5 (Serial8/0), len 64, sending full packet, proto=89
Rack1R2#
*Mar 6 06:31:50.144: IP: s=155.1.0.5 (Serial8/0), d=224.0.0.5, len 80, rcvd 0, proto=89
*Mar 6 06:31:50.145: IP: s=155.1.0.5 (Serial8/0), d=224.0.0.5, len 80, input feature, proto=89, packet consumed, MCI Check(8icon_cool.gif, rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
Rack1R2#
*Mar 6 06:31:57.767: IP: s=155.1.0.2 (local), d=224.0.0.5 (Serial8/0), len 80, sending broad/multicast, proto=89
*Mar 6 06:31:57.767: IP: s=155.1.0.2 (local), d=224.0.0.5 (Serial8/0), len 80, encapsulation failed, proto=89
Rack1R2#



Broadcast capability added to R2


Rack1R2#
*Mar 6 06:40:31.557: IP: s=155.1.0.2 (local), d=224.0.0.5 (Serial8/0), len 76, sending broad/multicast, proto=89
*Mar 6 06:40:31.557: IP: s=155.1.0.2 (local), d=224.0.0.5 (Serial8/0), len 76, sending full packet, proto=89
Rack1R2#
*Mar 6 06:40:41.042: IP: s=155.1.0.2 (local), d=224.0.0.5 (Serial8/0), len 76, sending broad/multicast, proto=89
*Mar 6 06:40:41.042: IP: s=155.1.0.2 (local), d=224.0.0.5 (Serial8/0), len 76, sending full packet, proto=89
Rack1R2#



Rack1R5(config-router)#
*Mar 6 06:41:07.357: OSPF-1 ADJ Se8/0: Interface going Up
*Mar 6 06:41:07.357: IP: s=155.1.0.5 (local), d=224.0.0.5 (Serial8/0), len 76, sending broad/multicast, proto=89
*Mar 6 06:41:07.357: IP: s=155.1.0.5 (local), d=224.0.0.5 (Serial8/0), len 76, sending full packet, proto=89
*Mar 6 06:41:07.540: IP: s=155.1.0.2 (Serial8/0), d=155.1.0.5, len 80, rcvd 0, proto=89
*Mar 6 06:41:07.540: IP: s=155.1.0.2 (Serial8/0), d=155.1.0.5, len 80, input feature, proto=89, packet consumed, MCI Check(8icon_cool.gif, rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
*Mar 6 06:41:07.541: OSPF-1 ADJ Se8/0: 2 Way Communication to 150.1.2.2, state 2WAY
*Mar 6 06:41:07.541: OSPF-1 ADJ Se8/0: Nbr 150.1.2.2: Prepare dbase exchange
*Mar 6 06:41:07.541: OSPF-1 ADJ Se8/0: Send DBD to 150.1.2.2 seq 0x20E4 opt 0x52 flag 0x7 len 32
*Mar 6 06:41:07.541: IP: s=155.1.0.5 (local), d=155.1.0.2 (Serial8/0), len 64, sending, proto=89
*Mar 6 06:41:07.541: IP: s=155.1.0.5 (local), d=155.1.0.2 (Serial8/0), len 64, sending full packet, proto=89
*Mar 6 06:41:07.541: IP: s=155.1.0.5 (local), d=155.1.0.2 (Serial8/0), len 80, sending, proto=89
Rack1R5(config-router)#
*Mar 6 06:41:07.541: IP: s=155.1.0.5 (local), d=155.1.0.2 (Serial8/0), len 80, sending full packet, proto=89
*Mar 6 06:41:07.691: IP: s=155.1.0.2 (Serial8/0), d=155.1.0.5, len 64, rcvd 0, proto=89
*Mar 6 06:41:07.691: IP: s=155.1.0.2 (Serial8/0), d=155.1.0.5, len 64, input feature, proto=89, packet consumed, MCI Check(8icon_cool.gif, rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
*Mar 6 06:41:07.691: IP: s=155.1.0.2 (Serial8/0), d=155.1.0.5, len 84, rcvd 0, proto=89
*Mar 6 06:41:07.691: IP: s=155.1.0.2 (Serial8/0), d=155.1.0.5, len 84, input feature, proto=89, packet consumed, MCI Check(8icon_cool.gif, rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
*Mar 6 06:41:07.691: OSPF-1 ADJ Se8/0: Rcv DBD from 150.1.2.2 seq 0x2660 opt 0x52 flag 0x7 len 32 mtu 1500 state EXSTART
*Mar 6 06:41:07.691: OSPF-1 ADJ Se8/0: First DBD and we are not SLAVE
*Mar 6 06:41:07.691: OSPF-1 ADJ Se8/0: Rcv DBD from 150.1.2.2 seq 0x20E4 opt 0x52 flag 0x2 len 52 mtu 1500 state EXSTART
*Mar 6 06:41:07.691: OSPF-1 ADJ Se8/0: NBR Negotiation Done. We are the MASTER
*Mar 6 06:41:07.691: OSPF-1 ADJ Se8/0: Nbr 150.1.2.2: Summary list built, size 0
*Mar 6 06:41:07.691: OSPF-1 ADJ Se8/0: Send DBD to 150.1.2.2 seq 0x20E5 opt 0x52 flag 0x1 len 32
*Mar 6 06:41:07.691: IP: s=155.1.0.5 (local), d=155.1.0.2 (Serial8/0), len 64, sending, proto=89
*Mar 6 06:41:07.691: IP: s=155.1.0.5 (local), d=155.1.0.2 (Serial8/0), len 64, sending full packet, proto=89
*Mar 6 06:41:07.856: IP: s=155.1.0.2 (Serial8/0), d=155.1.0.5, len 64, rcvd 0, proto=89
*Mar 6 06:41:07.856: IP: s=155.1.0.2 (Serial8/0), d=155.1.0.5, len 64, input feature, proto=89, packet consumed, MCI Check(8icon_cool.gif, rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
*Mar 6 06:41:07.872: OSPF-1 ADJ Se8/0: Rcv DBD from 150.1.2.2 seq 0x20E5 opt 0x52 flag 0x0 len 32 mtu 1500 state EXCHANGE
*Mar 6 06:41:07.872: OSPF-1 ADJ Se8/0: Exchange Done with 150.1.2.2
*Mar 6 06:41:07.872: OSPF-1 ADJ Se8/0: Send LS REQ to 150.1.2.2 length 36 LSA count 1
*Mar 6 06:41:07.872: IP: s=155.1.0.5 (local), d=155.1.0.2 (Serial8/0), len 56, sending, proto=89
*Mar 6 06:41:07.873: IP: s=155.1.0.5 (local), d=155.1.0.2 (Serial8/0), len 56, sending full packet, proto=89
*Mar 6 06:41:07.873: IP: s=155.1.0.5 (local), d=155.1.0.2 (Serial8/0), len 84, sending, proto=89
*Mar 6 06:41:07.873: IP: s=155.1.0.5 (local), d=155.1.0.2 (Serial8/0), len 84, sending full packet, proto=89
*Mar 6 06:41:07.984: IP: s=155.1.0.2 (Serial8/0), d=155.1.0.5, len 84, rcvd 0, proto=89
*Mar 6 06:41:07.984: IP: s=155.1.0.2 (Serial8/0), d=155.1.0.5, len 84, input feature, proto=89, packet consumed, MCI Check(8icon_cool.gif, rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
*Mar 6 06:41:07.984: OSPF-1 ADJ Se8/0: Rcv LS UPD from 150.1.2.2 length 64 LSA count 1
*Mar 6 06:41:07.984: OSPF-1 ADJ Se8/0: Synchronized with 150.1.2.2, state FULL
*Mar 6 06:41:07.984: %OSPF-5-ADJCHG: Process 1, Nbr 150.1.2.2 on Serial8/0 from LOADING to FULL, Loading Done
Rack1R5(config-router)#
*Mar 6 06:41:07.984: OSPF-1 ADJ Se8/0: Nbr 150.1.2.2: Clean-up dbase exchange
*Mar 6 06:41:08.348: IP: s=155.1.0.2 (Serial8/0), d=155.1.0.5, len 96, rcvd 0, proto=89
*Mar 6 06:41:08.348: IP: s=155.1.0.2 (Serial8/0), d=155.1.0.5, len 96, input feature, proto=89, packet consumed, MCI Check(8icon_cool.gif, rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
Rack1R5(config-router)#
*Mar 6 06:41:10.045: IP: s=155.1.0.2 (Serial8/0), d=224.0.0.5, len 80, rcvd 0, proto=89
*Mar 6 06:41:10.045: IP: s=155.1.0.2 (Serial8/0), d=224.0.0.5, len 80, input feature, proto=89, packet consumed, MCI Check(8icon_cool.gif, rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
*Mar 6 06:41:10.488: IP: s=155.1.0.5 (local), d=155.1.0.2 (Serial8/0), len 84, sending, proto=89
*Mar 6 06:41:10.488: IP: s=155.1.0.5 (local), d=155.1.0.2 (Serial8/0), len 84, sending full packet, proto=89
*Mar 6 06:41:10.519: IP: s=155.1.0.2 (Serial8/0), d=155.1.0.5, len 64, rcvd 0, proto=89
*Mar 6 06:41:10.519: IP: s=155.1.0.2 (Serial8/0), d=155.1.0.5, len 64, input feature, proto=89, packet consumed, MCI Check(8icon_cool.gif, rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
Rack1R5(config-router)#
*Mar 6 06:41:12.938: IP: s=155.1.0.5 (local), d=155.1.0.2 (Serial8/0), len 96, sending, proto=89
*Mar 6 06:41:12.938: IP: s=155.1.0.5 (local), d=155.1.0.2 (Serial8/0), len 96, sending full packet, proto=89
Rack1R5(config-router)#
*Mar 6 06:41:15.592: IP: s=155.1.0.2 (Serial8/0), d=155.1.0.5, len 64, rcvd 0, proto=89
*Mar 6 06:41:15.592: IP: s=155.1.0.2 (Serial8/0), d=155.1.0.5, len 64, input feature, proto=89, packet consumed, MCI Check(8icon_cool.gif, rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
Rack1R5(config-router)#
*Mar 6 06:41:17.355: IP: s=155.1.0.5 (local), d=224.0.0.5 (Serial8/0), len 80, sending broad/multicast, proto=89
*Mar 6 06:41:17.355: IP: s=155.1.0.5 (local), d=224.0.0.5 (Serial8/0), len 80, sending full packet, proto=89
Rack1R5(config-router)#
*Mar 6 06:41:19.782: IP: s=155.1.0.2 (Serial8/0), d=224.0.0.5, len 80, rcvd 0, proto=89
*Mar 6 06:41:19.782: IP: s=155.1.0.2 (Serial8/0), d=224.0.0.5, len 80, input feature, proto=89, packet consumed, MCI Check(8icon_cool.gif, rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
Rack1R5(config-router)#do un all
All possible debugging has been turned off
Rack1R5(config-router)#
Networking, sometimes i love it, mostly i hate it.Its all about the $$$$
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Comments

  • wintermute000wintermute000 Banned Posts: 172
    Hence why there is the option to define point to multipoint non-broadcast :p

    re: your sig, that's unfortunate....
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  • EdTheLadEdTheLad Member Posts: 2,111 ■■■■□□□□□□
    I don't think you understood the post, the point is, point-to-multipoint can establish if only one side is broadcast capable. It will timeout however and cycle through this again and again. The database exchange is unicast but once established it will commence with multicast for hellos and LSAs. Before testing this, i would have said the neighbor would never establish. This would be a nice fault for TS or lab, if the multiaccess network has large timers imagine dead interval 240 or longer, everything looks good, full connectivity achieved, start working on redistribution and network starts falling over. All because "broadcast" missing on FR map, since neighbors were up you wouldn't be thinking about that.
    Networking, sometimes i love it, mostly i hate it.Its all about the $$$$
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  • Dieg0MDieg0M Member Posts: 861
    There's a couple of things like these in the config section. Most of them have to do with BGP as they have by default very long timers. If you have not seen these behaviours before, you might be in for a very expensive lunch. I didnt know about this one, thanks!
    Follow my CCDE journey at www.routingnull0.com
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