We have 2 routers:
- 1 RRAS 2012 R2
- 1 TMG 2008 R2
Our RRAS server is routing 11 subnets. 1 is for the routing between RRAS and TMG
- The only static route is the 0.0.0.0
Our TMG is routing 4 subnets, 1 is the routing subnet (Internal), the others are Perimeter, External, VPN.
The routing was without issue since January 2015...
Early this morning (4 am), we lost some network connectivity. After some diagnostics, we identify some routing problem and we reboot our RRAS server. Every became as expected.
But on the RRAS server, the IP routing table is not identical if you type Route Print than if you right click on Static Routes in the Routing and Remote console and select "Show IP Routing Table...".
The routing table shown by the MMC is wrong. If we follow this routing table, all subnets have our TMG as interface and our TMG returns packets to RRAS because the routing table on TMG is good. That's was the problem we seen this morning.
The TMG routing table is updated by RIP.
The RRAS routing table is updated by RIP.
The routing table shown by Route print is good and is running as expected. RRAS is using is own interface to route packets on all subnets.
Did you encountered this kind of problem?
Do you think we have to remove RIP and use only static routes?