The three valid BGP (Border Gateway Protocol) message types are:
A. refresh
D. keepalive
E. update
These messages serve different purposes within the BGP protocol:
Refresh: Used for the route refresh capability in BGP to request the exchange of all routing information.
Keepalive: Sent periodically between BGP peers to maintain the connection and verify that the neighbor is reachable.
Update: Carries routing information and is used to advertise new routes or withdraw previously advertised routes.
A-D-E are exact :
BGP messages are used to establish and maintain BGP peering sessions
• All BGP messages use a common header
- Open message
- Keepalive message
- Update message
- Notification message
- Refresh message
Additional info:
https://networklessons.com/bgp/bgp-messages
"Optional Parameters: here you will find some optional capabilities of the BGP router. This field has been added so that new features could be added to BGP without having to create a new version.Things you might find here are:
support for MP-BGP (Multi Protocol BGP).
support for Route Refresh.
support for 4-octet AS numbers."
There are no refresh in BGP messages:
Open Message.
Update Message.
Keepalive Message.
Notification Message.
upvoted 2 times
...
Log in to ExamTopics
Sign in:
Community vote distribution
A (35%)
C (25%)
B (20%)
Other
Most Voted
A voting comment increases the vote count for the chosen answer by one.
Upvoting a comment with a selected answer will also increase the vote count towards that answer by one.
So if you see a comment that you already agree with, you can upvote it instead of posting a new comment.
julin_10
11 months, 2 weeks agoNasredd
1 year, 7 months agojj970us
2 years agojj970us
2 years agoCK_
2 years ago