Hi everyone!
I've got a pretty confusing network situation at a customer's site and hope
that anyone of you could guide me in the right direction...
| |
Internet - - - GRE - - - Internet
| |
| |
============ ============
| Router A | | Router B |
============ ============
| |
| Cat5 | Leased Line
| |
============ ============
| Switch 1 |--------------| Switch 2 |
============ LL ============
| |
| Cat 5 | Cat 5
| |
============ ============
| Router C | | Router D |
============ ============
Router A, B, C and D have iBGP peerings to each other over the two switches.
All the routers are in the same subnet (10.0.0.0/28)!!!
Router A and B are connected to the Internet. They announce the whole
netblock. The problem is, that if the leased line
between both switches or between Switch 2 and Router B goes down, C and D
will have huge connectivity problems (of course) :-(
There is no other way to connect those routers together as there are a
couple of kilometers in between.
What would be the best solution that if a leased line goes down, packets
that come in to Router A still find their way to Router D and packets that
come in to Router B find their way to Router C?
Route Reflecting, OSPF, ...?
Thanks and kind regards,
Bernd
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