| 1 |
3 types of routing between BGP routers
-
intra-autonomous system routing
-
inter-autonomous system routing
-
pass-through autonomous system routing
|
| 2 |
BGP operation
-
maintains routing tables (lists all physical paths to a particular network)
-
transmits routing updates (routers send the portion of their routing tables that have changed)
-
bases routing decisions on routing metrics
-
keeps information about global topology of network
|
| 3 |
Types of BGP messages (version 4)
-
open messages (open BGP communication session)
-
update message (provides routing updates to other BGP systems; TCP )
-
notification message (sent when error occurs)
-
keep-alive message - notify BGP peers that a device is still alive)
|
