Posted on Tuesday, 26th July 2005 by sean
Route aggregation happens where multiple routes are rolled up into a series of shorter prefixes (ie 4 /24′s become a /22). The idea is to reduce the number of routes that need to be processed. Often, the specifics don’t matter. If I’m advertising the 4 /24′s as above and they all go the the same [...]
Posted in Routing | Comments (0)
Posted on Friday, 22nd July 2005 by sean
BGP receives path updates from its peers, and then makes a decision as to which route is best. This is the route that is potentially transferred to the IP routing table and advertised to peers. The synchronization rule also plays a part in this decision, and is investigated more closely. Cisco has the BGP Best [...]
Posted in Routing | Comments (1)
Posted on Wednesday, 20th July 2005 by sean
Networking is all about understanding the behaviour of the underlying protocols. Many of these protocols are deterministic, meaning they will always produce a predictable result for a given set of inputs. This is achieved by using predictable values, such as MAC and IP addresses, and reproducable values such as cost and hop count. These numbers [...]
Posted in General | Comments (0)
Posted on Sunday, 3rd July 2005 by sean
CCNPRecertification.com, and some other sites, have run off my cable modem since inception. The server started to become bogged down after time, so I thought it time to pay for some off site hosting. Dedicated servers were in the $100US/month range, and the $5/mo cheapie hosting deals didn’t have the features I needed. Virtual Private [...]
Posted in General | Comments (5)
I'm a happy Linode customer. This is a Linode 540 VPS.