Re: Maximum Prefix Limit

"Manav Bhatia" <mnvbhatia@yahoo.com> Wed, 16 January 2002 05:50 UTC

Message-ID: <03f701c19e51$f2d4daa0$b4036c6b@Manav>
Reply-To: Manav Bhatia <mnvbhatia@yahoo.com>
From: Manav Bhatia <mnvbhatia@yahoo.com>
To: Enke Chen <enke@redback.com>
Cc: idr@merit.edu
References: <20020116053731.DC01615D3C1@popserv1.redback.com>
Subject: Re: Maximum Prefix Limit
Date: Wed, 16 Jan 2002 11:22:14 +0530
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Thanks Enke!

One more thing - Should we restart the session after the Idle timer expires
or should the session be freezed until a BGP Restart is given?

----- Original Message -----
From: "Enke Chen" <enke@redback.com>
To: "Manav Bhatia" <mnvbhatia@yahoo.com>
Cc: <idr@merit.edu>
Sent: Wednesday, January 16, 2002 11:07 AM
Subject: Re: Maximum Prefix Limit


| Hi, Manav:
| Regarding the CEASE subcode, please see the following draft:
|
|        draft-ietf-idr-cease-subcode-00.txt
|
| -- Enke
|
| > Message-ID: <03b001c19e4e$aa86e750$b4036c6b@Manav>
| > Reply-To: "Manav Bhatia" <mnvbhatia@yahoo.com>
| > From: "Manav Bhatia" <mnvbhatia@yahoo.com>
| > To: <idr@merit.edu>
| > Subject: Maximum Prefix Limit
| > Date: Wed, 16 Jan 2002 10:58:43 +0530
| > MIME-Version: 1.0
| >
| > Hi,
| >
| > I am working on BGP implementation of the "maximum prefix limit"
feature
| > which is like a protection mechanism against route leaking. A warning
flag
| > will be raised once the number of prefixes start exceeding some
percentage
| > for the user to do something about it. If nothing happens and the limit
| > reaches a configured threshold then the BGP session will be torn down.
| >
| > - In the current draft there is no mechanism for the other end to know
of
| > the reason why the session went down in the first place. IF this is
| > achieved then the admin at the other end can take some actions to
alleviate
| > the situation.
| >
| > - Should  the BGP session be restarted after some configured Idle Timer
| > expiration?
| >
| > This can result in consistent route flappings which is highly
undesirable.
| >
| > - Should the BGP session be freezed until a manual Restart is given?
| >
| > - Should there be counters for individual SAFI or should there be a
| > consolidated one for the entire AFI?
| >
| > We must have a mechanism wherein we can inform admin guys in the
network
| > leaking routes causing an overflow for us. This issue was brought up
some
| > time back in the list but i saw no apparent conclusion to the whole
| > discussion ;-)
| >
| > Is there any intention of introducing a new cease sub-code in the
| > NOTIFICATION message which will inform both the parties of the reason
why
| > the session was brought down!
| >
| > Regards,
| > Manav
| >
| >
| >
| > ----
| > "When you are courting a nice girl an hour seems like a second. When
you
| > sit on a red-hot cinder a second seems like an hour. That's
relativity."
| >
| > -Albert Einstein, on relativity
| >
| >
| >
| >
| > _________________________________________________________
| > Do You Yahoo!?
| > Get your free @yahoo.com address at http://mail.yahoo.com
| >


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