Hi Rene,
Could you please check the exact cause of this error. getting following error in spoke router.
*Dec 14 11:56:50.720: %DUAL-5-NBRCHANGE: EIGRP-IPv4 45678: Neighbor 123.20.1.25 (Tunnel0) is down: Peer Termination received
*Dec 14 11:56:54.320: %DUAL-5-NBRCHANGE: EIGRP-IPv4 45678: Neighbor 123.20.1.25 (Tunnel0) is up: new adjacency
*Dec 14 11:56:54.364: %ADJ-5-PARENT: Midchain parent maintenance for IP midchain out of Tunnel0, addr 123.20.1.25 - looped chain attempting to stack”
Topology:
Hub-----------------------ISP(AS20003)------------------------Spoke
Requirement is Spoke should use eigrp default route learned from hub not the ISP(BGP) default route. So i used distance for bgp default route. Actually bgp and eigrp configured first then tunnel configured. As soon as i configured the tunnel eigrp neig starts flapping and getting the error. The weird thing is if i delete the distance command from bgp configuration then eigrp neighborship gets stable and then if i put the distance command again it does not cause any issue even if i clear bgp and eigrp neighborship. I am using IOU. is it bug of IOU ?? Please advise.
HUB:
==================================================
interface Tunnel0
ip address 123.20.1.25 255.255.255.248
tunnel source Ethernet0/0
tunnel mode gre multipoint
ip nhrp map multicast dynamic
ip nhrp network-id 45678
ip nhrp redirect
bandwidth 1000
ip nhrp holdtime 300
ip nhrp authentication 45678key
ip mtu 1400
ip tcp adjust-mss 1380
delay 1000
no ip next-hop-self eigrp 45678
no ip split-horizon eigrp 45678
ip pim sparse-mode
access-list 1 permit 0.0.0.0
router bgp 45678
bgp router-id 123.17.17.17
bgp log-neighbor-changes
neighbor 203.3.17.1 remote-as 20003
!
address-family ipv4
neighbor 203.3.17.1 activate
distance 171 203.3.17.1 0.0.0.0 1
exit-address-family
router eigrp CCIE
!
address-family ipv4 unicast autonomous-system 45678
af-interface Tunnel0
authentication mode hmac-sha-256 cisco
authentication key-chain CCIE
exit-af-interface
network 123.17.17.17 0.0.0.0
network 123.20.1.10 0.0.0.0
network 123.20.1.18 0.0.0.0
network 123.20.1.25 0.0.0.0
exit-address-family
R17(config)#do sir
D*EX 0.0.0.0/0 [170/1075200] via 123.20.1.9, 01:51:22, Ethernet0/2
1.0.0.0/32 is subnetted, 1 subnets
B 1.2.3.4 [20/0] via 203.3.17.1, 01:50:56
R17(config)#do sh ip bg
r> 0.0.0.0 203.3.17.1 0 20003 30000 i
*> 1.2.3.4/32 203.3.17.1 0 20003 30000 i
Spoke:
===========================================
interface Tunnel0
bandwidth 1000
ip address 123.20.1.26 255.255.255.248
no ip redirects
ip mtu 1400
ip pim sparse-mode
ip nhrp authentication 45678key
ip nhrp map multicast 203.3.17.2
ip nhrp map 123.20.1.25 203.3.17.2
ip nhrp network-id 45678
ip nhrp holdtime 300
ip nhrp nhs 123.20.1.25
ip nhrp shortcut
ip tcp adjust-mss 1380
delay 1000
tunnel source Serial1/0
tunnel mode gre multipoint
end
router bgp 65222
bgp router-id 123.19.19.19
bgp log-neighbor-changes
neighbor 203.3.19.1 remote-as 20003
!
address-family ipv4
neighbor 203.3.19.1 activate
distance 171 203.3.19.1 0.0.0.0 1
exit-address-family
router eigrp CCIE
!
address-family ipv4 unicast autonomous-system 45678
!
af-interface Tunnel0
authentication mode hmac-sha-256 cisco
authentication key-chain CCIE
exit-af-interface
!
topology base
exit-af-topology
network 10.1.19.1 0.0.0.0
network 123.19.19.19 0.0.0.0
network 123.20.1.27 0.0.0.0
eigrp stub connected summary
exit-address-family
R19#sir
D*EX 0.0.0.0/0 [170/10803200] via 123.20.1.25, 00:33:42, Tunnel0
1.0.0.0/32 is subnetted, 1 subnets
B 1.2.3.4 [20/0] via 203.3.19.1, 00:33:50
R19#sh ip bg
Network Next Hop Metric LocPrf Weight Path
r> 0.0.0.0 203.3.19.1 0 20003 30000 i