[c-nsp] bgp 0.0.0.0 in routing table

[Murphy, Jay, DOH]

1) It is the default route to the directly connected BGP next hop.
2) Any system that advertises this route, represents itself as a gateway of last resort.
3) When this route is present in the BGP table, preference can be set to determine which gateway of last resort is primary, and which is secondary, in the event you have two links connected to an ISP. It will allow accommodation for potential failures, in the event you receive 0/0 defaults from multiple sources.
4) There is much more involved with BGP attributes that can be set for the 0/0 route. :-)


~Jay Murphy 
IP Network Specialist
NM State Government
 
IT Services Division
PSB – IP Network Management Center
Santa Fé, New México 87505 
"We move the information that moves your world." 
“Good engineering demands that we understand what we’re doing and why, keep an open mind, and learn from experience.”
“Engineering is about finding the sweet spot between what's solvable and what isn't."
               Radia Perlman
 Please consider the environment before printing e-mail

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Michael Sprouffske
Sent: Thursday, June 10, 2010 1:13 PM
To: cisco-nsp at puck.nether.net
Subject: [c-nsp] bgp 0.0.0.0 in routing table

Just curious about this question for my exam. The answer says igp and aggregate command.  Just wondering why you couldn't manually put that in the table?  Might be a dumb question.

What are the two reasons for the appearance of 0.0.0.0 as the next hop for a network in the show ip bgp command output? 





      
_______________________________________________
cisco-nsp mailing list  cisco-nsp at puck.nether.net
https://puck.nether.net/mailman/listinfo/cisco-nsp
archive at http://puck.nether.net/pipermail/cisco-nsp/


Confidentiality Notice: This e-mail, including all attachments is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited unless specifically provided under the New Mexico Inspection of Public Records Act. If you are not the intended recipient, please contact the sender and destroy all copies of this message. -- This email has been scanned by the Sybari - Antigen Email System.