02-20-2013 04:50 PM - edited 03-05-2019 06:49 AM
hi,
we have this hub and spoke setup, so each spoke connects to 2 hubs. then with eigrp we decide which hub gets priority. simply by using an offset list and saying any route you give to this hub1 and learn from it add 10000000 to the distance so this makes hub2 the primary.
we run our hubs with asr 1001 routers btw.
now the problem I'm seeing on my spoke is this,
Feb 21 00:45:07.933: EIGRP: Received HELLO on Tunnel1 nbr 192.168.128.1
Feb 21 00:45:08.157: EIGRP: Received HELLO on Tunnel1 nbr 192.168.128.1
Feb 21 00:45:08.265: EIGRP: Received HELLO on Tunnel0 nbr 192.168.120.1
Feb 21 00:45:08.405: EIGRP: Received HELLO on Tunnel1 nbr 192.168.128.1
Feb 21 00:45:08.729: EIGRP: Received HELLO on Tunnel1 nbr 192.168.128.1
Feb 21 00:45:08.781: EIGRP: Received HELLO on Tunnel1 nbr 192.168.128.1
Feb 21 00:45:08.861: EIGRP: Received HELLO on Tunnel1 nbr 192.168.128.1
Feb 21 00:45:08.957: EIGRP: Received HELLO on Tunnel1 nbr 192.168.128.1
Feb 21 00:45:09.089: EIGRP: Received HELLO on Tunnel1 nbr 192.168.128.1
Feb 21 00:45:09.185: EIGRP: Received HELLO on Tunnel1 nbr 192.168.128.1
Feb 21 00:45:09.405: EIGRP: Received HELLO on Tunnel0 nbr 192.168.120.1
Feb 21 00:45:09.413: EIGRP: Received HELLO on Tunnel1 nbr 192.168.128.1
Feb 21 00:45:09.445: EIGRP: Received HELLO on Tunnel1 nbr 192.168.128.1
Feb 21 00:45:09.637: EIGRP: Received HELLO on Tunnel1 nbr 192.168.128.1
Feb 21 00:45:09.741: EIGRP: Received HELLO on Tunnel1 nbr 192.168.128.1
Feb 21 00:45:09.773: EIGRP: Received HELLO on Tunnel1 nbr 192.168.128.1
Feb 21 00:45:09.865: EIGRP: Received HELLO on Tunnel1 nbr 192.168.128.1
Feb 21 00:45:10.081: EIGRP: Received HELLO on Tunnel1 nbr 192.168.128.1
Feb 21 00:45:10.085: EIGRP: Received HELLO on Tunnel1 nbr 192.168.128.1
Feb 21 00:45:10.101: EIGRP: Received HELLO on Tunnel1 nbr 192.168.128.1
Feb 21 00:45:10.329: EIGRP: Received HELLO on Tunnel1 nbr 192.168.128.1
for some reason I'm bombarded or seems that way with hellos unless I'm interpreting this wrong... the output is from a
debug eigrp packets hello
this command clearly shows that my hello interval is 5 seconds and hold time is 15 on the hub. my tunnel1 on the spoke connects to this hub.
router#sh ip eigrp 76 interfaces detail
EIGRP-IPv4 Interfaces for AS(76)
Xmit Queue PeerQ Mean Pacing Time Multicast Pending
Interface Peers Un/Reliable Un/Reliable SRTT Un/Reliable Flow Timer Routes
Tu0 305 0/0 0/2993 55 0/23 220 0
Hello-interval is 5, Hold-time is 15
Split-horizon is disabled
Next xmit serial <none>
Packetized sent/expedited: 352494/65952
Hello's sent/expedited: 674057/180921
Un/reliable mcasts: 0/136442 Un/reliable ucasts: 453228/2178270
Mcast exceptions: 742876 CR packets: 127377 ACKs suppressed: 104189
Retransmissions sent: 234364 Out-of-sequence rcvd: 43874
Interface has all stub peers
Next-hop-self disabled, next-hop info forwarded
Topology-ids on interface - 0
Authentication mode is md5, key-chain is "EIGRPKEY"
has anyone seen this?
now this happens only with 1 of the hubs, the other hub does not send hellos like this. as you can see from the spoke output the other hub tun0 sends packets every 1 second... which is still weird because I have set hellos to 30 seconds and holdtime to 90 seconds and still my spoke gets spammed with hellos...
thoughts?
thanks.
02-20-2013 05:41 PM
Hello,
Are your eigrp neighbors flapping?
Can you apply debug eigrp packet and post the output
res
Paul
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02-20-2013 06:50 PM
Hi there,
I would check your hubs again because it is at least unusual to see 305 peers on the other end of a tunnel. Possibly on the asr you are propagating the entire network hellos rather that EIGRP work itself with it. By the way, why are you using tunnels? Any load sharing? Post the design if you can
Hth
Alessio
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