BGP messages
BGP communication uses four message types, as shown in the following table:
Type |
Name |
Functional Overview |
1 |
OPEN |
Sets up and establishes BGP adjacency |
2 |
UPDATE |
Advertises, updates, or withdraw routes |
3 |
NOTIFICATION |
Indicates and error condition to a BGP neighbor |
4 |
KEEPALIVE |
Ensures that BGP neighbors are still alive |