GRE TUNNEL Recursive error
hi guys
i hope you are doing well
i am preparing for ccie exam using INE topology v5 , now i am stuck at the GRE Tunnel Recursive error , i applied access-list and then ip prefix-list to solve the issue of the Recursive , but it is not solved , the tunnel keep getting up and then get down , both the configuration and topology are in the attachment .
i am trying to do GRE tunnel between R4 and R8
can you please advise what ip prefix list i should applied to solve the issue , i treid too much things but it didnt solve the issue
the error massage is below :
*Aug 27 08:20:25.103: %ADJ-5-PARENT: Midchain parent maintenance for IP midchain out of Tunnel100 - looped chain attempting to stack
*Aug 27 08:20:30.023: %TUN-5-RECURDOWN: Tunnel100 temporarily disabled due to recursive routing
*Aug 27 08:20:30.027: %LINEPROTO-5-UPDOWN: Line protocol on Interface Tunnel100, changed state to down
*Aug 27 08:20:30.031: %DUAL-5-NBRCHANGE: EIGRP-IPv4 1: Neighbor 79.0.0.8 (Tunnel100) is down: interface down
R4.txt
R8.txt
INE-Topology.png
i hope you are doing well
i am preparing for ccie exam using INE topology v5 , now i am stuck at the GRE Tunnel Recursive error , i applied access-list and then ip prefix-list to solve the issue of the Recursive , but it is not solved , the tunnel keep getting up and then get down , both the configuration and topology are in the attachment .
i am trying to do GRE tunnel between R4 and R8
can you please advise what ip prefix list i should applied to solve the issue , i treid too much things but it didnt solve the issue
the error massage is below :
*Aug 27 08:20:25.103: %ADJ-5-PARENT: Midchain parent maintenance for IP midchain out of Tunnel100 - looped chain attempting to stack
*Aug 27 08:20:30.023: %TUN-5-RECURDOWN: Tunnel100 temporarily disabled due to recursive routing
*Aug 27 08:20:30.027: %LINEPROTO-5-UPDOWN: Line protocol on Interface Tunnel100, changed state to down
*Aug 27 08:20:30.031: %DUAL-5-NBRCHANGE: EIGRP-IPv4 1: Neighbor 79.0.0.8 (Tunnel100) is down: interface down
R4.txt
R8.txt
INE-Topology.png
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Great. I did not notice that prefix is missing, and to be honest I would miss it again. When added it finally stopped advertisement of tunnel destination network through tunnel.
This is already my knowledgebase.
:)
Thank you.
This is already my knowledgebase.
:)
Thank you.
ASKER
the problem has been solved
ASKER
many thanks for you Predrag
ASKER
the commend change solve the issue
Possible solutions (if my assumption is correct)
- create static route (better AD) to other side of tunnel (on both routers) that point through physical interface
- make route through tunnel looks worse to reach other side of tunnel (you could use offset list - to make cost through tunnel worse than through physical interface)
- make in EIGRP - passive-interface tunnel 100
I guess you should also include no auto-summary in EIGRP (both sides now advertise 155.1.0.0/16).