Re: [VRRP] Proposal for Maintenance Event for VRRP [RFC-5798]
"Adrian Farrel" <adrian@olddog.co.uk> Wed, 22 May 2013 16:12 UTC
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From: Adrian Farrel <adrian@olddog.co.uk>
To: vrrp@ietf.org
References: <512F8815.5010204@ibtechnology.com> <A2BB90B33FFDF740876C5AAE307D83DB1C295D1C@xmb-rcd-x05.cisco.com> <5130366D.6070302@ibtechnology.com> <A2BB90B33FFDF740876C5AAE307D83DB1C2963EE@xmb-rcd-x05.cisco.com> <5131B583.3000500@ibtechnology.com> <A2BB90B33FFDF740876C5AAE307D83DB1C297B31@xmb-rcd-x05.cisco.com>
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Date: Wed, 22 May 2013 17:12:05 +0100
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Cc: "'fhrp-team(mailer list)'" <fhrp-team@cisco.com>
Subject: Re: [VRRP] Proposal for Maintenance Event for VRRP [RFC-5798]
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Hi, If you are wondering how to progress this in the IETF, the answer is... - write an I-D - discuss it (here) - polish it - ask me to sponsor it for publication as an RFC. Cheers, Adrian > -----Original Message----- > From: vrrp-bounces@ietf.org [mailto:vrrp-bounces@ietf.org] On Behalf Of > Anurag Kothari (ankothar) > Sent: 04 March 2013 23:43 > To: sreenatha; vrrp@ietf.org > Cc: fhrp-team(mailer list) > Subject: Re: [VRRP] Proposal for Maintenance Event for VRRP [RFC-5798] > > Hi Sreenatha > > If you mean "if I am not wrong" then yes what you have said below is correct. > > Also I believe the objective (particularly in case of time sensitive application) is to > avoid any unnecessary switch overs; as already suggested earlier let's call this a > "Change Event" instead of "Maintenance Event". The "Change Event" would be > triggered by change in one of the following parameters of the VRRP Packet : > > 1) Priority (Section 5.2.4. of RFC-5798) > 2) Max Adver Int (Section 5.2.7. of RFC-5798) > > And possibly: > > 3) IPvX Address(es) (Section 5.2.9. of RFC-5798) > > The "Change Event" would only be handled in Master State and ignored in other > state as the VRRP Packets are only supposed to be sent by the Master. > > So to rephrase the proposal: > > - If a Change event is received, then: > > + Send an ADVERTISEMENT > > + Reset the Adver_Timer to Advertisement_Interval > > -endif // Change recv > > To cover the failover scenario (in the absence of preemption) Priority = 0 will now > have to be allowed along with the previously discussed modifications to avoid a > storm of Priority = 0 Advertisements from two masters. > > Please Share your thoughts. > > Thanks > -Anurag > > -----Original Message----- > From: sreenatha [mailto:sreenatha.setty@ibtechnology.com] > Sent: Saturday, March 02, 2013 3:17 AM > To: Anurag Kothari (ankothar) > Cc: vrrp@ietf.org > Subject: Re: Proposal for Maintenance Event for VRRP [RFC-5798] > > Hi Anurag, > Thanks for clarification. > > If i am wrong, user is allowed to configure Priority value as zero(i.e., > Maintenance_Event), priority value will be changed. And handling of the > Maintenance_Event is done only in Master state and ignored in Backup and Init > state. > > Thanks, > Sreenatha > > On 03/01/2013 08:31 PM, Anurag Kothari (ankothar) wrote: > > Hi Sreenatha > > > > I don't think we need to define a "Maintenance_Event" when the router is in > either Init or Backup State. The intention of the "Maintenance_Event" is to > trigger a failover from "Master" to a "Backup" router as soon as possible > (especially when preemption is not configured). > > > > But if you are asking if priority = 0 should be allowed (either by user > configuration or dynamically) when the router is in "Init" or "Backup" state then I > think the answer should be yes, It should be treated just like any other change in > priority is treated when the router is in these states. > > > > Please let me know if I am missing something. > > > > Thanks > > -Anurag > > > > > > Disclaimer : > This email communication may contain privileged and confidential information > and is intended for the use of the addressee only.If you are not an intended > recipient you are requested not to reproduce, copy disseminate or in any manner > distribute this email communication as the same is strictly prohibited. If you have > received this email in error, please notify the sender immediately by return e- > mail and delete the communication sent in error. Email communications cannot > be guaranteed to be secure & error free and IB Technology is not liable for any > errors in the email communication or for the proper, timely and complete > transmission thereof. > > _______________________________________________ > vrrp mailing list > vrrp@ietf.org > https://www.ietf.org/mailman/listinfo/vrrp
- [VRRP] Proposal for Maintenance Event for VRRP [R… Anurag Kothari (ankothar)
- Re: [VRRP] Proposal for Maintenance Event for VRR… sreenatha
- Re: [VRRP] Proposal for Maintenance Event for VRR… Anurag Kothari (ankothar)
- Re: [VRRP] Proposal for Maintenance Event for VRR… sreenatha
- Re: [VRRP] Proposal for Maintenance Event for VRR… Anurag Kothari (ankothar)
- Re: [VRRP] Proposal for Maintenance Event for VRR… Anurag Kothari (ankothar)
- Re: [VRRP] Proposal for Maintenance Event for VRR… Anurag Kothari (ankothar)
- Re: [VRRP] Proposal for Maintenance Event for VRR… sreenatha
- Re: [VRRP] Proposal for Maintenance Event for VRR… Anurag Kothari (ankothar)
- Re: [VRRP] Proposal for Maintenance Event for VRR… sreenatha
- Re: [VRRP] Proposal for Maintenance Event for VRR… Anurag Kothari (ankothar)
- Re: [VRRP] Proposal for Maintenance Event for VRR… sreenatha
- Re: [VRRP] Proposal for Maintenance Event for VRR… Anurag Kothari (ankothar)
- Re: [VRRP] Proposal for Maintenance Event for VRR… Adrian Farrel