eBGP Flashcards
Define Single Homed
A single link to One ISP
Define Dual
Two or more links to the same router.
Define Multi-homed
Multiple ISPs
Define Dual Homed
One router with two links to One ISP
Define Single Multi-homed
One router with a link to 2 ISPs
Dual Multi-homed
One router with 2 links each to 2 ISPs (4 links total)
What protocol and port is used by BGP?
TCP 179
What kind of message does BGP use to exchange information between BGP Peers?
update message
What is the command to configure a BGP neighbor?
neighbor 1.2.3.4 remote-as 101
What 2 show commands verify a BGP neighbor relationship?
- show tcp brief * show ip bgp summary
What is the command to configure a router-id in BGP?
- bgp router-id (id)
How does BGP determine its router ID?
1.) bgp router-id command 2.) highest loopback IP or 3) highest interface IP
What is the command to administratively shutdown a BGP neighbor relationship?
In router-config mode, “neighbor 1.2.3.4 shutdown”
When a neighbor relationship is shut down, what does the ‘state’ show?
Idle (Admin)
What is a Discard Route?
A route to null0
