From: Ken.Farrington@barclayscapital.com
Date: Mon Sep 29 2003 - 14:47:34 GMT-3
actually, I can use both attributes to set the inbound path selection
correct?
ie in the following two BGP examples.
Ethernet
+-------------------------+
| |
rtr1 AS 65001 rtr2
| |
+-------------------------+
Serial
-------------SET-MED---------------------------------
!
router bgp 65001
neighbor 1.1.1.2 remote-as 65001
neighbor 1.1.1.2 route-map SET-MED-ETHERNET out
neighbor 2.2.2.2 remote-as 65001
neighbor 2.2.2.2 route-map SET-MED-ETHERNET out
!
route-map SET-MED-SERIAL permit 10
match as-path 11
set metric 1000
!
route-map SET-MED-SERIAL permit 20
!
!
no route-map SET-MED-ETHERNET
route-map SET-MED-ETHERNET permit 10
match as-path 11
set metric 2000
!
route-map SET-MED-ETHERNET permit 20
or
-------------SET-LOCALPREF---------------------------------
router bgp 65001
neighbor 1.1.1.2 remote-as 65001
neighbor 1.1.1.2 route-map SET-LOCALPREF-ETHERNET out
neighbor 2.2.2.2 remote-as 65001
neighbor 2.2.2.2 route-map SET-LOCALPREF-ETHERNET out
!
route-map SET-LOCALPREF-SERIAL permit 10
match as-path 11
set local-pref 80
!
route-map SET-MED-SERIAL permit 20
!
!
route-map SET-LOCALPREF-ETHERNET permit 10
match as-path 11
set local-pref 90
!
route-map SET-MED-ETHERNET permit 20
!
-----Original Message-----
From: Ken.Farrington@barclayscapital.com
[mailto:Ken.Farrington@barclayscapital.com]
Sent: 29 September 2003 18:24
To: ccielab@groupstudy.com
Subject: BGP BOLD Statements
Hello,
Can I just think of the two BGP attributes LOCAL_PREF and MULTI-EXIT_DISC in
the following way.
LOCAL_PREF = To influence a path to a network outside my AS from my AS ->
outbound path selection
(shared between iBGP peers)
MULTI-EXIT-DISC = To influence to an external AS which path to take coming
to a network in my AS <- inbound path selection
(used "ONLY" with eBGP peers)
Is this about the crucks of it, or it it dangerous to think of these two
attribs this way. Just during my study, my brain is full up and I cant get
too much more in there me thinks.
Many thx indeed.
Ken
------------------------------------------------------------------------
For more information about Barclays Capital, please
visit our web site at http://www.barcap.com.
Internet communications are not secure and therefore the Barclays
Group does not accept legal responsibility for the contents of this
message. Although the Barclays Group operates anti-virus programmes,
it does not accept responsibility for any damage whatsoever that is
caused by viruses being passed. Any views or opinions presented are
solely those of the author and do not necessarily represent those of the
Barclays Group. Replies to this email may be monitored by the Barclays
Group for operational or business reasons.
------------------------------------------------------------------------
***Get your CCIE and a FREE vacation: Shop.GroupStudy.com***
This archive was generated by hypermail 2.1.4 : Wed Oct 01 2003 - 07:24:39 GMT-3