From: Scott Morris (swm@emanon.com)
Date: Sun Jan 07 2007 - 02:16:00 ART
The default address family is ipv4, so in and of itself, it is "kind of"
always there. You may find that it magically appears depending on your IOS
version and whether you have enabled other address families or not (kind of
a reminder).
But if you are only configuring ipv4 bgp operations (default, generic
method) then no, it is not a required command. It's simply a separator for
our (human) interpretation of the configuration, the router knows more than
we do most times!
HTH,
Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, JNCIE
#153, CISSP, et al.
CCSI/JNCI-M/JNCI-J
IPexpert VP - Curriculum Development
IPexpert Sr. Technical Instructor
smorris@ipexpert.com
http://www.ipexpert.com
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Xiangling
Sent: Saturday, January 06, 2007 11:55 PM
To: ccie >> Cisco certification
Subject: "address-family ipv4" for BGP
Hi, Buddies,
It might be stupid but I'm quite confused by this command. Will it make any
difference if this line is not there? For example. What's the difference
between the two BGP configuration below:
!
router bgp 100
nei 10.1.1.1 remote-as 200
nei 10.1.1.1 pass CISCO
nei 10.1.1.1 next-hop-self
nei 10.1.1.1 send-community both
nei 10.1.1.1 prefix-list AS54 in
nei 10.1.1.1 route-map TO_AS54 out
no auto-summary
no synchronization
!
and
router bgp 100
nei 10.1.1.1 remote-as 200
nei 10.1.1.1 pass CISCO
!
address-family ipv4
nei 10.1.1.1 next-hop-self
nei 10.1.1.1 send-community both
nei 10.1.1.1 prefix-list AS54 in
nei 10.1.1.1 route-map TO_AS54 out
no auto-summary
no synchronization
!
-- Thanks & Regards, Xiangling |-------------------------| | | \ I Love You All / \ / \___________/
This archive was generated by hypermail 2.1.4 : Thu Feb 08 2007 - 23:46:55 ART