Hello All,
I have a very weird but also very frustrating issue going on right now.
My current home WAN Setup involves a single 1921 with 2x HWIC1-ADSL Cards installed running OER for Wan Balancing.
The OER and WAN balancing side of things works very well and doesn't give us the issue that GLBP on 2 Routers that
This new
So, as part of a Group Project for my Network Security degree with 3 other friends, we have multiple IPSEC VTI Tunnels between our routers, and we use EIGRP for dynamic routing, each person has 2 tunnels from their wan router to 2x other people for redundancy, and over this our Labs and servers are able to communicate.
My
When
It should be noted that when a tunnel refuses to come up, the Peer router CAN NOT be Pinged from the respective wan interface (but often can on the other wan interface).
Tunnel 9004 goes to
Tunnel 9006 goes to
Tunnel 92004 goes to
Tunnel 92006 goes to
For example:
on a Cold boot, tunnels 9004 and 92006 Come up but 92004 and 9006 do not.
With the above being the case:
Sometimes as is the case right as
Turning off IP CEF results in Either HUB being Pingable from Either WAN Interface and all tunnels coming up.
I cant however leave IP CEF Disabled because its Required by the OER Load Balancing running on the router, and turning CEF off results in MASSIVE (often 50% or more) Packet drops.
Does anyone know why turning CEF OFF causes ALL the tunnels to come up, and turning it back on (or booting up with it enabled) means that half the tunnels just dont work?
I have attached a sanitised router config as an attachment.
IOS Version is:
Cisco IOS Software, C1900 Software (C1900-UNIVERSALK9-M), Version 15.0(1)M4, RELEASE SOFTWARE (fc1)
Thanks,
Alex.