[j-nsp] disable “soft-reconf-inbound”

[Adam Vitkovsky]

Hi folks,

Is it possible to disable the default “soft-reconf-inbound” kind of thing in Junos please?
Or is the RT based ORF between PEs and RRs the only option if one does not want to keep the unmodified copy of ADJ-RIB-IN with millions of prefixes in it?

Thanks

adam
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[Olivier Benghozi]

set keep none

Post by Adam Vitkovsky
Hi folks,
Is it possible to disable the default “soft-reconf-inbound” kind of thing in Junos please?
Or is the RT based ORF between PEs and RRs the only option if one does not want to keep the unmodified copy of ADJ-RIB-IN with millions of prefixes in it?

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[Alexander Arseniev]

Yes it is.
Cconfigure "keep none" under "protocols bgp" and You will have CSCO-like
behaviour when after changing import policy You'd have to reset BGP
session(s).
"keep none" discards routes denied by import policy.
Thanks
Alex

Post by Adam Vitkovsky
Hi folks,
Is it possible to disable the default “soft-reconf-inbound” kind of thing in Junos please?
Or is the RT based ORF between PEs and RRs the only option if one does not want to keep the unmodified copy of ADJ-RIB-IN with millions of prefixes in it?
Thanks
adam
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[Olivier Benghozi]

http://www.juniper.net/techpubs/en_US/junos13.3/information-products/topic-collections/release-notes/13.3/index.html?topic-76113.html <http://www.juniper.net/techpubs/en_US/junos13.3/information-products/topic-collections/release-notes/13.3/index.html?topic-76113.html>

"Starting in Junos OS Release 13.3, configuring keep none or keep all no longer causes all BGP sessions to restart. For peers that do not support route refresh, when you configure keep none or keep all, the associated BGP sessions are restarted (flapped). For peers that do support route refresh, the local speaker sends a route refresh and performs an import evaluation. For these peers, the sessions do not restart when you configure keep none or keep all. To determine if a peer supports refresh, check for Peer supports Refresh capability in the output of the show bgp neighbor command. In previous releases, configuring keep none or keep all caused all BGP sessions to restart."

Post by Alexander Arseniev
Yes it is.
Cconfigure "keep none" under "protocols bgp" and You will have CSCO-like behaviour when after changing import policy You'd have to reset BGP session(s).
"keep none" discards routes denied by import policy.
Thanks
Alex

Post by Adam Vitkovsky
Hi folks,
Is it possible to disable the default “soft-reconf-inbound” kind of thing in Junos please?
Or is the RT based ORF between PEs and RRs the only option if one does not want to keep the unmodified copy of ADJ-RIB-IN with millions of prefixes in it?
Thanks
adam

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[Adam Vitkovsky]

Thank you very much folks.

I actually see the “Peer supports Refresh capability” on 12.3

adam

From: Olivier Benghozi [mailto:***@wifirst.fr]
Sent: 17 June 2015 12:29
To: Alexander Arseniev; Adam Vitkovsky; juniper-nsp
Subject: Re: [j-nsp] disable “soft-reconf-inbound”

http://www.juniper.net/techpubs/en_US/junos13.3/information-products/topic-collections/release-notes/13.3/index.html?topic-76113.html

"Starting in Junos OS Release 13.3, configuring keep none or keep all no longer causes all BGP sessions to restart. For peers that do not support route refresh, when you configure keep none or keep all, the associated BGP sessions are restarted (flapped). For peers that do support route refresh, the local speaker sends a route refresh and performs an import evaluation. For these peers, the sessions do not restart when you configure keep none or keep all. To determine if a peer supports refresh, check for Peer supports Refresh capability in the output of the show bgp neighbor command. In previous releases, configuring keep none or keep all caused all BGP sessions to restart."


Le 17 juin 2015 à 13:13, Alexander Arseniev <***@btinternet.com<mailto:***@btinternet.com>> a écrit :

Yes it is.
Cconfigure "keep none" under "protocols bgp" and You will have CSCO-like behaviour when after changing import policy You'd have to reset BGP session(s).
"keep none" discards routes denied by import policy.
Thanks
Alex

On 17/06/2015 11:56, Adam Vitkovsky wrote:

Hi folks,

Is it possible to disable the default “soft-reconf-inbound” kind of thing in Junos please?
Or is the RT based ORF between PEs and RRs the only option if one does not want to keep the unmodified copy of ADJ-RIB-IN with millions of prefixes in it?

Thanks

adam


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