Hi Evryone!
I have strange flapping situtaion on my two N7K they have VPC-PEER-LINK (the port-channel) (don't have vlan 302, it's excluded), and second connection is via 10G normal trunk, who have only routed vlans (in my situation 302), on VPC are non routed vlans. This normal trunk iterface have MTU with 1500.
On debug log I see that one dvice recive and send HELLO, but seccond only send HELLO but don't recive anything. Parameters of this two nexuses are thisame
Hardware are: cisco Nexus7000 C7004
Software are: 6.2(8a)
N7K1:
Xmit Queue Mean Pacing Time Multicast Pending
Interface Peers Un/Reliable SRTT Un/Reliable Flow Timer Routes
Vlan302 0 0/0 0 0/0 50 0
Hello interval is 5 sec
Holdtime interval is 15 sec
Next xmit serial <none>
Un/reliable mcasts: 0/6 Un/reliable ucasts: 11/126
Mcast exceptions: 0 CR packets: 0 ACKs suppressed: 0
Retransmissions sent: 101 Out-of-sequence rcvd: 0
Authentication mode is not set
Use multicast
Classic/wide metric peers: 0/0
N7K2:
Xmit Queue Mean Pacing Time Multicast Pending
Interface Peers Un/Reliable SRTT Un/Reliable Flow Timer Routes
Vlan302 0 0/0 0 0/0 50 0
Hello interval is 5 sec
Holdtime interval is 15 sec
Next xmit serial <none>
Un/reliable mcasts: 0/6 Un/reliable ucasts: 42/329
Mcast exceptions: 0 CR packets: 0 ACKs suppressed: 4
Retransmissions sent: 296 Out-of-sequence rcvd: 97
Authentication mode is not set
Use multicast
Classic/wide metric peers: 0/0
Show from log:
2014 Dec 17 16:02:08 PLCORE01 %EIGRP-5-NBRCHANGE_DUAL: eigrp-100 [6601] (default-base) IP-EIGRP(0) 100: Neighbor 192.168.78.2 (Vlan302) is up: new adjacency
2014 Dec 17 16:02:09 PLCORE01 %EIGRP-5-NBRCHANGE_DUAL: eigrp-100 [6601] (default-base) IP-EIGRP(0) 100: Neighbor 192.168.78.2 (Vlan302) is down: interface status down
Show from debug:
N7K2:
2014 Dec 18 11:47:52.031574 eigrp: 100 [6606] (default-base) EIGRP: Sending HELLO on Vlan302
2014 Dec 18 11:47:52.031591 eigrp: 100 [6606] (default-base) AS 100, Flags 0x0, Seq 0/0idbQ 0/0
2014 Dec 18 11:47:52.031599 eigrp: 100 [6606] (default-base) iidbQ un/rely 0/0
2014 Dec 18 11:47:55.834580 eigrp: 100 [6606] (default-base) EIGRP: Received HELLO on Vlan302
2014 Dec 18 11:47:55.834620 eigrp: 100 [6606] (default-base) nbr 192.168.78.1
2014 Dec 18 11:47:55.834646 eigrp: 100 [6606] (default-base) AS 100, Flags 0x0, Seq 0/0idbQ 0/0
2014 Dec 18 11:47:55.834669 eigrp: 100 [6606] (default-base) iidbQ un/rely 0/0
2014 Dec 18 11:47:55.834691 eigrp: 100 [6606] (default-base) peerQ un/rely 0/1
2014 Dec 18 11:47:56.764744 eigrp: 100 [6606] (default-base) EIGRP: Sending HELLO on Vlan302
2014 Dec 18 11:47:56.764780 eigrp: 100 [6606] (default-base) AS 100, Flags 0x0, Seq 0/0idbQ 0/0
2014 Dec 18 11:47:56.764805 eigrp: 100 [6606] (default-base) iidbQ un/rely 0/0
2014 Dec 18 11:48:00.644895 eigrp: 100 [6606] (default-base) EIGRP: Received HELLO on Vlan302
2014 Dec 18 11:48:00.644974 eigrp: 100 [6606] (default-base) nbr 192.168.78.1
2014 Dec 18 11:48:00.645000 eigrp: 100 [6606] (default-base) AS 100, Flags 0x0, Seq 0/0idbQ 0/0
2014 Dec 18 11:48:00.645023 eigrp: 100 [6606] (default-base) iidbQ un/rely 0/0
2014 Dec 18 11:48:00.645045 eigrp: 100 [6606] (default-base) peerQ un/rely 0/1
2014 Dec 18 11:48:01.504971 eigrp: 100 [6606] (default-base) EIGRP: Sending HELLO on Vlan302
2014 Dec 18 11:48:01.505008 eigrp: 100 [6606] (default-base) AS 100, Flags 0x0, Seq 0/0idbQ 0/0
2014 Dec 18 11:48:01.505033 eigrp: 100 [6606] (default-base) iidbQ un/rely 0/0
2014 Dec 18 11:48:05.234037 eigrp: 100 [6606] (default-base) EIGRP: Received HELLO on Vlan302
2014 Dec 18 11:48:05.234114 eigrp: 100 [6606] (default-base) nbr 192.168.78.1
2014 Dec 18 11:48:05.234140 eigrp: 100 [6606] (default-base) AS 100, Flags 0x0, Seq 0/0idbQ 0/0
2014 Dec 18 11:48:05.234163 eigrp: 100 [6606] (default-base) iidbQ un/rely 0/0
2014 Dec 18 11:48:05.234186 eigrp: 100 [6606] (default-base) peerQ un/rely 0/1
2014 Dec 18 11:48:05.962235 eigrp: 100 [6606] (default-base) EIGRP: Sending HELLO on Vlan302
2014 Dec 18 11:48:05.962277 eigrp: 100 [6606] (default-base) AS 100, Flags 0x0, Seq 0/0idbQ 0/0
2014 Dec 18 11:48:05.962301 eigrp: 100 [6606] (default-base) iidbQ un/rely 0/0
2014 Dec 18 11:48:05.964607 eigrp: 100 [6606] (default-base) EIGRP: Received HELLO on Vlan302
2014 Dec 18 11:48:05.964679 eigrp: 100 [6606] (default-base) nbr 192.168.78.1
2014 Dec 18 11:48:05.964704 eigrp: 100 [6606] (default-base) AS 100, Flags 0x0, Seq 0/0idbQ 0/0
2014 Dec 18 11:48:05.964727 eigrp: 100 [6606] (default-base) iidbQ un/rely 0/0
2014 Dec 18 11:48:05.964749 eigrp: 100 [6606] (default-base) peerQ un/rely 0/1
2014 Dec 18 11:48:10.667492 eigrp: 100 [6606] (default-base) EIGRP: Sending HELLO on Vlan302
2014 Dec 18 11:48:10.667536 eigrp: 100 [6606] (default-base) AS 100, Flags 0x0, Seq 0/0idbQ 0/0
2014 Dec 18 11:48:10.667561 eigrp: 100 [6606] (default-base) iidbQ un/rely 0/0
2014 Dec 18 11:48:10.861817 eigrp: 100 [6606] (default-base) EIGRP: Received HELLO on Vlan302
2014 Dec 18 11:48:10.861889 eigrp: 100 [6606] (default-base) nbr 192.168.78.1
2014 Dec 18 11:48:10.861914 eigrp: 100 [6606] (default-base) AS 100, Flags 0x0, Seq 0/0idbQ 0/0
2014 Dec 18 11:48:10.861937 eigrp: 100 [6606] (default-base) iidbQ un/rely 0/0
2014 Dec 18 11:48:10.861959 eigrp: 100 [6606] (default-base) peerQ un/rely 0/1
2014 Dec 18 11:48:15.080747 eigrp: 100 [6606] (default-base) EIGRP: Sending HELLO on Vlan302
2014 Dec 18 11:48:15.080785 eigrp: 100 [6606] (default-base) AS 100, Flags 0x0, Seq 0/0idbQ 0/0
2014 Dec 18 11:48:15.080809 eigrp: 100 [6606] (default-base) iidbQ un/rely 0/0
2014 Dec 18 11:48:15.441051 eigrp: 100 [6606] (default-base) EIGRP: Received HELLO on Vlan302
2014 Dec 18 11:48:15.441129 eigrp: 100 [6606] (default-base) nbr 192.168.78.1
2014 Dec 18 11:48:15.441155 eigrp: 100 [6606] (default-base) AS 100, Flags 0x0, Seq 0/0idbQ 0/0
2014 Dec 18 11:48:15.441179 eigrp: 100 [6606] (default-base) iidbQ un/rely 0/0
2014 Dec 18 11:48:15.441201 eigrp: 100 [6606] (default-base) peerQ un/rely 0/1
2014 Dec 18 11:48:19.357977 eigrp: 100 [6606] (default-base) EIGRP: Sending HELLO on Vlan302
2014 Dec 18 11:48:19.358020 eigrp: 100 [6606] (default-base) AS 100, Flags 0x0, Seq 0/0idbQ 0/0
2014 Dec 18 11:48:19.358046 eigrp: 100 [6606] (default-base) iidbQ un/rely 0/0
N7K1:
2014 Dec 18 11:48:20.264723 eigrp: 100 [6601] (default-base) AS 100, Flags 0x0, Seq 0/0idbQ 0/0
2014 Dec 18 11:48:20.264746 eigrp: 100 [6601] (default-base) iidbQ un/rely 0/0
2014 Dec 18 11:48:25.052925 eigrp: 100 [6601] (default-base) EIGRP: Sending HELLO on Vlan302
2014 Dec 18 11:48:25.052967 eigrp: 100 [6601] (default-base) AS 100, Flags 0x0, Seq 0/0idbQ 0/0
2014 Dec 18 11:48:25.052991 eigrp: 100 [6601] (default-base) iidbQ un/rely 0/0
2014 Dec 18 11:48:29.513154 eigrp: 100 [6601] (default-base) EIGRP: Sending HELLO on Vlan302
2014 Dec 18 11:48:29.513196 eigrp: 100 [6601] (default-base) AS 100, Flags 0x0, Seq 0/0idbQ 0/0
2014 Dec 18 11:48:29.513220 eigrp: 100 [6601] (default-base) iidbQ un/rely 0/0
2014 Dec 18 11:48:30 PLCORE01 %EIGRP-5-NBRCHANGE_DUAL: eigrp-100 [6601] (default-base) IP-EIGRP(0) 100: Neighbor 192.168.78.2 (Vlan302) is down: holding time expired
2014 Dec 18 11:48:30.077284 eigrp: 100 [6601] (default-base) EIGRP: Sending HELLO on Vlan302
2014 Dec 18 11:48:30.077312 eigrp: 100 [6601] (default-base) AS 100, Flags 0x0, Seq 0/0idbQ 0/0
2014 Dec 18 11:48:30.077334 eigrp: 100 [6601] (default-base) iidbQ un/rely 0/0
2014 Dec 18 11:48:35.055529 eigrp: 100 [6601] (default-base) EIGRP: Sending HELLO on Vlan302
2014 Dec 18 11:48:35.055572 eigrp: 100 [6601] (default-base) AS 100, Flags 0x0, Seq 0/0idbQ 0/0
2014 Dec 18 11:48:35.055599 eigrp: 100 [6601] (default-base) iidbQ un/rely 0/0
2014 Dec 18 11:48:35.069128 eigrp: 100 [6601] (default-base) EIGRP: Received HELLO on Vlan302
2014 Dec 18 11:48:35.069144 eigrp: 100 [6601] (default-base) nbr 192.168.78.2
2014 Dec 18 11:48:35.069153 eigrp: 100 [6601] (default-base) AS 100, Flags 0x0, Seq 0/0idbQ 0/0
2014 Dec 18 11:48:35 PLCORE01 %EIGRP-5-NBRCHANGE_DUAL: eigrp-100 [6601] (default-base) IP-EIGRP(0) 100: Neighbor 192.168.78.2 (Vlan302) is up: new adjacency
2014 Dec 18 11:48:35.070242 eigrp: 100 [6601] (default-base) EIGRP: Sending HELLO on Vlan302
2014 Dec 18 11:48:35.070274 eigrp: 100 [6601] (default-base) AS 100, Flags 0x0, Seq 0/0idbQ 0/0
2014 Dec 18 11:48:35.070296 eigrp: 100 [6601] (default-base) iidbQ un/rely 0/1
2014 Dec 18 11:48:40.076076 eigrp: 100 [6601] (default-base) EIGRP: Sending HELLO on Vlan302
2014 Dec 18 11:48:40.076116 eigrp: 100 [6601] (default-base) AS 100, Flags 0x0, Seq 0/0idbQ 0/0
2014 Dec 18 11:48:40.076139 eigrp: 100 [6601] (default-base) iidbQ un/rely 0/0
2014 Dec 18 11:48:44.394315 eigrp: 100 [6601] (default-base) EIGRP: Sending HELLO on Vlan302
2014 Dec 18 11:48:44.394356 eigrp: 100 [6601] (default-base) AS 100, Flags 0x0, Seq 0/0idbQ 0/0
2014 Dec 18 11:48:44.394380 eigrp: 100 [6601] (default-base) iidbQ un/rely 0/0
2014 Dec 18 11:48:48.873604 eigrp: 100 [6601] (default-base) EIGRP: Sending HELLO on Vlan302
2014 Dec 18 11:48:48.873644 eigrp: 100 [6601] (default-base) AS 100, Flags 0x0, Seq 0/0idbQ 0/0
2014 Dec 18 11:48:48.873667 eigrp: 100 [6601] (default-base) iidbQ un/rely 0/0
2014 Dec 18 11:48:50 PLCORE01 %EIGRP-5-NBRCHANGE_DUAL: eigrp-100 [6601] (default-base) IP-EIGRP(0) 100: Neighbor 192.168.78.2 (Vlan302) is down: holding time expired
2014 Dec 18 11:48:50.084675 eigrp: 100 [6601] (default-base) EIGRP: Sending HELLO on Vlan302
2014 Dec 18 11:48:50.084703 eigrp: 100 [6601] (default-base) AS 100, Flags 0x0, Seq 0/0idbQ 0/0
2014 Dec 18 11:48:50.084727 eigrp: 100 [6601] (default-base) iidbQ un/rely 0/0
2014 Dec 18 11:48:54.772941 eigrp: 100 [6601] (default-base) EIGRP: Sending HELLO on Vlan302
2014 Dec 18 11:48:54.772980 eigrp: 100 [6601] (default-base) AS 100, Flags 0x0, Seq 0/0idbQ 0/0
2014 Dec 18 11:48:54.773004 eigrp: 100 [6601] (default-base) iidbQ un/rely 0/0
2014 Dec 18 11:48:59.226245 eigrp: 100 [6601] (default-base) EIGRP: Sending HELLO on Vlan302
2014 Dec 18 11:48:59.226288 eigrp: 100 [6601] (default-base) AS 100, Flags 0x0, Seq 0/0idbQ 0/0
2014 Dec 18 11:48:59.226312 eigrp: 100 [6601] (default-base) iidbQ un/rely 0/0
2014 Dec 18 11:49:03.495479 eigrp: 100 [6601] (default-base) EIGRP: Sending HELLO on Vlan302
2014 Dec 18 11:49:03.495521 eigrp: 100 [6601] (default-base) AS 100, Flags 0x0, Seq 0/0idbQ 0/0
2014 Dec 18 11:49:03.495544 eigrp: 100 [6601] (default-base) iidbQ un/rely 0/0
2014 Dec 18 11:49:04.320708 eigrp: 100 [6601] (default-base) EIGRP: Received HELLO on Vlan302
2014 Dec 18 11:49:04.320723 eigrp: 100 [6601] (default-base) nbr 192.168.78.2
2014 Dec 18 11:49:04.320733 eigrp: 100 [6601] (default-base) AS 100, Flags 0x0, Seq 0/0idbQ 0/0
2014 Dec 18 11:49:04 PLCORE01 %EIGRP-5-NBRCHANGE_DUAL: eigrp-100 [6601] (default-base) IP-EIGRP(0) 100: Neighbor 192.168.78.2 (Vlan302) is up: new adjacency
2014 Dec 18 11:49:04.321902 eigrp: 100 [6601] (default-base) EIGRP: Sending HELLO on Vlan302
2014 Dec 18 11:49:04.321934 eigrp: 100 [6601] (default-base) AS 100, Flags 0x0, Seq 0/0idbQ 0/0
2014 Dec 18 11:49:04.321956 eigrp: 100 [6601] (default-base) iidbQ un/rely 0/1
2014 Dec 18 11:49:08.998143 eigrp: 100 [6601] (default-base) EIGRP: Sending HELLO on Vlan302
2014 Dec 18 11:49:08.998180 eigrp: 100 [6601] (default-base) AS 100, Flags 0x0, Seq 0/0idbQ 0/0
2014 Dec 18 11:49:08.998204 eigrp: 100 [6601] (default-base) iidbQ un/rely 0/0
Any idea, why one nexus send only Hello, and second send and recive?