On a ring using RRPP, we have several protected vlans (vlan 2 to 20, including a vlan 13). The VLAN 13 is an OSPF routing vlan.
Just to give you an idea, here's the topology and the configuration applied to HP10500VIL
I've decided to configure BFD for OSPF on interface vlan 13.
But, now I'm wondering if BFD is an appropriate mechanism on a link with several vlans.
OIndeed, one day, we had a BFD failure (see the logs below). No updown link, no RRPP failure.
To my mind, the BFD packet was not received before 300ms and an OSPF reconvergence occurs.
Should I disable BFD on my vlan 13 ?? If you have any idea ...?
Thanks
Herve
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HP10500VIL:
%Jun 10 09:35:32:631 2013 HP10500VIL BFD/5/BFD_CHANGE_FSM: Sess [10.61.5.8/10.61.5.9,516/33,Vlan13,Ctrl], Sta: UP->DOWN, Diag: 5
%Jun 10 09:35:32:632 2013 HP10500VIL OSPF/6/OSPF_LAST_NBR_DOWN: OSPF 1 Last neighbor down event: Router ID: 10.61.5.9 Local address: 10.61.5.8 Remote
address: 10.61.5.9 Reason: BFD session down.
%Jun 10 09:35:32:782 2013 HP10500VIL OSPF/5/OSPF_NBR_CHG: OSPF 1 Neighbor
10.61.5.9(Vlan-interface13) from Full to Down.
%Jun 10 09:35:41:494 2013 HP10500VIL OSPF/5/OSPF_NBR_CHG: OSPF 1 Neighbor
10.61.5.9(Vlan-interface13) from Loading to Full.
%Jun 10 09:35:41:655 2013 HP10500VIL BFD/5/BFD_CHANGE_FSM: Sess [10.61.5.8/10.61.5.9,517/36,Vlan13,Ctrl], Sta: DOWN->INIT, Diag: 0 %Jun 10 09:35:41:815 2013 HP10500VIL BFD/5/BFD_CHANGE_FSM: Sess [10.61.5.8/10.61.5.9,517/36,Vlan13,Ctrl], Sta: INIT->UP, Diag: 0
HP10500CAL:
%Jun 10 09:35:32:727 2013 HP10500CAL BFD/5/BFD_CHANGE_FSM: Sess [10.61.5.7/10.61.5.9,516/34,Vlan13,Ctrl], Sta: UP->DOWN, Diag: 5
%Jun 10 09:35:32:734 2013 HP10500CAL OSPF/6/OSPF_LAST_NBR_DOWN: OSPF 1 Last neighbor down event: Router ID: 10.61.5.9 Local address: 10.61.5.7 Remote
address: 10.61.5.9 Reason: BFD session down.
%Jun 10 09:35:32:734 2013 HP10500CAL OSPF/5/OSPF_NBR_CHG: OSPF 1 Neighbor
10.61.5.9(Vlan-interface13) from Full to Down.
%Jun 10 09:35:40:617 2013 HP10500CAL OSPF/5/OSPF_NBR_CHG: OSPF 1 Neighbor
10.61.5.9(Vlan-interface13) from Loading to Full.
%Jun 10 09:35:40:905 2013 HP10500CAL BFD/5/BFD_CHANGE_FSM: Sess [10.61.5.7/10.61.5.9,517/35,Vlan13,Ctrl], Sta: DOWN->INIT, Diag: 0 %Jun 10 09:35:40:926 2013 HP10500CAL BFD/5/BFD_CHANGE_FSM: Sess [10.61.5.7/10.61.5.9,517/35,Vlan13,Ctrl], Sta: INIT->UP, Diag: 0
HP500LYO:
%Jun 10 09:35:32:456 2013 HP5500LYO BFD/5/BFD_CHANGE_FSM: Sess [10.61.5.9/10.61.5.8,33/516,Vlan13,Ctrl], Sta: UP->DOWN, Diag: 5 %Jun 10 09:35:32:463 2013 HP5500LYO OSPF/6/OSPF_LAST_NBR_DOWN: OSPF 1 Last neighbor down event: Router ID: 10.61.5.8 Local address: 10.61.5.9 Remote
address: 10.61.5.8 Reason: BFD session down.
%Jun 10 09:35:32:464 2013 HP5500LYO OSPF/5/OSPF_NBR_CHG: OSPF 1 Neighbor
10.61.5.8(Vlan-interface13) from Full to Down.
%Jun 10 09:35:32:722 2013 HP5500LYO BFD/5/BFD_CHANGE_FSM: Sess [10.61.5.9/10.61.5.7,34/516,Vlan13,Ctrl], Sta: UP->DOWN, Diag: 5 %Jun 10 09:35:32:732 2013 HP5500LYO OSPF/6/OSPF_LAST_NBR_DOWN: OSPF 1 Last neighbor down event: Router ID: 10.61.5.7 Local address: 10.61.5.9 Remote
address: 10.61.5.7 Reason: BFD session down.
%Jun 10 09:35:32:732 2013 HP5500LYO OSPF/5/OSPF_NBR_CHG: OSPF 1 Neighbor
10.61.5.7(Vlan-interface13) from Full to Down.
%Jun 10 09:35:37:459 2013 HP5500LYO RM/3/RMLOG: The default route has been changed or deleted, protocol is OSPF, nexthop address is 10.61.5.8, output interface is Vlan-interface13
%Jun 10 09:35:37:459 2013 HP5500LYO RM/3/RMLOG: The default route has been changed or deleted, protocol is OSPF, nexthop address is 10.61.5.7, output interface is Vlan-interface13
%Jun 10 09:35:40:616 2013 HP5500LYO OSPF/5/OSPF_NBR_CHG: OSPF 1 Neighbor
10.61.5.7(Vlan-interface13) from Loading to Full.
%Jun 10 09:35:40:815 2013 HP5500LYO OSPF/5/OSPF_NBR_CHG: OSPF 1 Neighbor
10.61.5.8(Vlan-interface13) from Loading to Full.
%Jun 10 09:35:40:922 2013 HP5500LYO BFD/5/BFD_CHANGE_FSM: Sess [10.61.5.9/10.61.5.7,35/517,Vlan13,Ctrl], Sta: DOWN->UP, Diag: 0 %Jun 10 09:35:40:923 2013 HP5500LYO BFD/5/BFD_CHANGE_FSM: Sess [10.61.5.9/10.61.5.8,36/517,Vlan13,Ctrl], Sta: DOWN->UP, Diag: 0 %
