I'm having an issue I was hoping someone could help me with...
My setup is as such:
Primary location has internet connection and should be used by all remotes.Primary location connected to WAN via 30mb PVC
WAN is MPLS VPN with BPG routing
Primary location advertises a default route via "network 0.0.0.0" command, not default-originate.
Disaster recovery location also has internet, but should only be used in the event the internet at primary is unavailable. DR location also on WAN via 30MB circuit.
18 other branch locations on MPLS WAN
What I'm trying to do:
I would like to advertise a default route from the DR location and make it less desirable then the default route from the primary location. To accomplish this, i've used a prefix-list to identify the default route, then used that prefix-list in a route-map which tweaks the AS-PATH for the route.
It actually works well... there is a 2nd default route in the PE router with a higher AS-PATH. I tied the default route advertised from the Primary location to a track-object, so if the internet connection is unavailable (IP SLA pings next hop past our internet router), the default route is removed and the other route is inserted into the routing table pointing everything to the DR location for its default route.
Problem is, all the other routes from the DR location are no longer advertised, only the default route.Can someone please tell me what I'm missing? I guess I could tweak the prefix-list to match all routes (0.0.0.0/0 le 32), but I really only want to influence the default route. any thoughts? Thanks in advance!
Here's my config for the DR location:
router bgp 64519 no synchronization bgp log-neighbor-changes network 0.0.0.0 redistribute connected redistribute static neighbor <ISP PEER> remote-as <ISPASN> neighbor <ISP PEER> allowas-in neighbor <ISP PEER> route-map AS-PREPEND out no auto-summary
ip route 0.0.0.0 0.0.0.0 192.168.246.1
ip prefix-list default-route seq 5 permit 0.0.0.0/0 route-map AS-PREPEND permit 10 match ip address prefix-list default-route set as-path prepend 64519 64519
Just curious, can you explain why I'd need the blank statement?
I've got this all labbed out in GNS3 right now, even created a simulated "provider" network with VPNv4 routing / VRF to get it as accurate as possible. Everything seems to be updating as expected. Time to schedule its install in the production network
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