Industry Forums > Wireless Service Providers > [Tech Ops] MPLS

reply to TomS_

Re: [Tech Ops] MPLS

I have mostly RB50g or 493ah at each pop - Imagestream at the core. I believe at most I have seen my routers spike at 15% cpu and that is with Butch's QOS script running. I will have to relocate Butch's scripts moving forward but was struggling to see just where the benefit in mpls would come vs what I already have in place.

reply to unwired
If you centrally assign IP addresses via RADIUS (from one common, central pool), you will inject one host route (a /32) into your IGP's (OSPF) routing table for every client who connects. Furthermore, every time one of your clients disconnects/reconnects their PPPoE connection, an update to your routing table will occur. Each device that participates in OSPF on your network will will receive the "update" every time a PPPoE connection state changes.

If you choose to route a block of IPs to each PPPoE concentrator, it will be a bit more difficult to manage your IPs efficiently. But, you will be able to summarize the route for the block of IPs. This means that instead of having 253 /32 host-routes for each client in a /24, the router/concentrator would only announce one summary route (the /24) to the rest of your network. In addition, because you are summarizing the route, your routing table won't update each time a client connects/disconnects.

Yeah. Most likely you can have the router doing the termination announce a summary route in place of all of the host routes.

If youre terminating locally at each tower or in a non-centralised way, naturally you have little choice.