On Oct 11, 2013, at 10:27 AM, William Waites <wwaites@tardis.ed.ac.uk> wrote:
I'm having a discussion with a small network in a part of the world where bandwidth is scarce and multiple DSL lines are often used for upstream links. The topic is policy-based routing, which is being described as "load balancing" where end-user traffic is assigned to a line according to source address.
In my opinion the main problems with this are:
- It's brittle, when a line fails, traffic doesn't re-route
it's brittle
- None of the usual debugging tools work properly - Adding a new user is complicated because it has to be done in (at least) two places
you take all the useful information that an IGP could be (or is) providing you, and then you ignore it and do something else.
But I'm having a distinct lack of success locating rants and diatribes or even well-reasoned articles supporting this opinion.
Am I out to lunch?
evil is not a synonym for ugly patch placed over a problem that could be handled better. If it's being used as an alternative to VRF, it isn't.
-w -- The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336.