From: Richard Dumoulin (richard.dumoulin@vanco.es)
Date: Mon May 10 2004 - 13:30:33 GMT-3
I believe there is an undocumented command that will decode the packets. But
only in hexadecimal format. A sniffer may be better,
--Richard
-----Original Message-----
From: Mohamed [mailto:nmohamed@cisco.com]
Sent: lunes, 10 de mayo de 2004 18:25
To: Richard Dumoulin; 'Yasser Abdullah'; groupstudy@cconlinelabs.com;
ccielab@groupstudy.com
Subject: RE: BGP Aggregate AS-Path Prepend
Unable to catch the AS information in debug,
01:50:56: BGP(0): route 216.1.1.0/24 up
01:50:56: BGP: Applying map to find origin for 216.1.1.0/24
01:50:56: BGP(0): Aggregate processing for IPv4 Unicast
01:50:56: BGP(0): For aggregate 200.100.0.0/16
01:50:56: BGP(0): 200.100.0.0/16 subtree has an entry 200.100.0.0/16
01:50:56: BGP(0): 200.100.0.0/16 subtree has an try 200.100.100.0/24
01:50:56: BGP(0): sub-prefix : 200.100.100.0
01:50:56: BGP(0): Need not be re-aggregated
01:50:56: BGP(0): nettable_walker 216.1.1.0/24 route sourced locally
01:50:56: BGP(0): 99.99.99.2 computing updates, afi 0, neighbor version 35,
table version 36, starting at 0.0.0.0
01:50:56: BGP(0): 99.99.99.2 send UPDATE (format) 216.1.1.0/24, next
99.99.99.1, metric 12345, path
01:50:56: BGP(0): 1 updates (average = 52, maximum = 52)
01:50:56: BGP(0): 99.99.99.2 updates replicated for neighbors: 99.99.99.2
01:50:56: BGP(0): 99.99.99.2 update run completed, afi 0, ran for 0ms,
neighbor version 36, start version 36, throttled to 36
01:50:56: BGP(0): 25.25.25.26 computing updates, afi 0, neighbor version 35,
table version 36, starting at 0.0.0.0
01:50:56: BGP(0): 25.25.25.26 send UPDATE (format) 216.1.1.0/24, next
25.25.25.25, metric 0, path
01:50:56: BGP(0): 1 updates (average = 55, maximum = 55)
01:50:56: BGP(0): 25.25.25.26 updates replicated for neighbors: 25.25.25.26
01:50:56: BGP(0): 25.25.25.26 update run completed, afi 0, ran for 0ms,
neighbor version 36, start version 36, throttled to 36
Which deb command captures the AS-path adverttised ?
Thanks
Mohamed.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Richard Dumoulin
Sent: Monday, May 10, 2004 8:28 PM
To: Mohamed; 'Yasser Abdullah'; groupstudy@cconlinelabs.com;
ccielab@groupstudy.com
Subject: RE: BGP Aggregate AS-Path Prepend
It was just a question. When a peer sends an update of locally originated
routes, if it is to a peer in the same AS then it sends the ASPATH with a
value of 0. If it is a peer in another AS then it adds his own AS number.
Thus my question, is having a value of 0 adding or modifying ?
--Richard
-----Original Message-----
From: Mohamed [mailto:nmohamed@cisco.com]
Sent: lunes, 10 de mayo de 2004 16:34
To: Richard Dumoulin; 'Yasser Abdullah'; groupstudy@cconlinelabs.com;
ccielab@groupstudy.com
Subject: RE: BGP Aggregate AS-Path Prepend
I feel manipulating is different from adding.
I really dint get your question,pls come again Richard
Thanks
Mohamed
-----Original Message-----
From: Richard Dumoulin [mailto:richard.dumoulin@vanco.es]
Sent: Monday, May 10, 2004 8:00 PM
To: Mohamed; 'Yasser Abdullah'; groupstudy@cconlinelabs.com;
ccielab@groupstudy.com
Subject: RE: BGP Aggregate AS-Path Prepend
But when not set, is an attribute empty or missing ?
-----Original Message-----
From: Mohamed [mailto:nmohamed@cisco.com <mailto:nmohamed@cisco.com> ]
Sent: lunes, 10 de mayo de 2004 16:19
To: 'Yasser Abdullah'; groupstudy@cconlinelabs.com; ccielab@groupstudy.com
Subject: RE: BGP Aggregate AS-Path Prepend
Hi Yasser,
The attribute map command is to manipulate the BGP attributes,that is what I
believe,so you can modify any BGP attributes,but cant add any more
attributes,pls correct if iam wrong. Thanks Mohamed.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com
<mailto:nobody@groupstudy.com> ] On Behalf Of Yasser Abdullah
Sent: Monday, May 10, 2004 6:02 PM
To: groupstudy@cconlinelabs.com; ccielab@groupstudy.com
Subject: Re: BGP Aggregate AS-Path Prepend
R2(AS1)-------R3(AS2)
R1 sends R2 150.2.2.0/24. In R2, I'm creating the aggregate 150.2.0.0/16.
I'm trying to manually set the as-path of the aggregate route. That is, I
don't want to use the as-set key work, rather a route-map with the as
prepend set feature.
Here is the command:
aggregate-address 150.2.0.0 255.255.0.0 attribute-map prepend
route-map prepend permit 10
set as-path prepend 1
I keep getting the same error.
Thanks,
Yasser
----- Original Message -----
From: "Tony Schaffran" <groupstudy@cconlinelabs.com>
To: "'Yasser Abdullah'" <yasser@alharbitelecom.com>;
<ccielab@groupstudy.com>
Sent: Monday, May 10, 2004 3:23 PM
Subject: RE: BGP Aggregate AS-Path Prepend
What is the exact command you are trying to issue? Could you paste your
config?
Tony Schaffran
Network Analyst
CCIE #11071
CCNP, CCNA, CCDA,
NNCDS, NNCSS, CNE, MCSE
www.cconlinelabs.com
Your #1 choice for online Cisco rack rentals.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com
<mailto:nobody@groupstudy.com> ] On Behalf Of Yasser Abdullah
Sent: Monday, May 10, 2004 5:15 AM
To: ccielab@groupstudy.com
Subject: BGP Aggregate AS-Path Prepend
Is it possible to prepend an AS path to a locally originated aggregate
route? What I'm trying to do is manually retain the as path without using
the as-set keyword.
I keep getting the following error when using a route/attribute map with the
aggregate-address command:
% "prepend" used as BGP attribute route-map, set as-path prepend not
supported
Many Thanks,
Yasser
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