Hi Shraddha,
I thought that one of goals of the draft is to minimize manual
intervention as a preparation for maintenance. My assumption is that
workarounds do require some manual intervention. Are mentioned
workarounds specific for particular implementation where BDR always
generates Network LSA in addition to DR's Network LSA? Or is essence of
workarounds in (manual) tuning of SPF delay timer?
Thank you.
25.04.2017 07:00, Shraddha Hegde пишет:
Yes. You are right.
This is a problem specific to BDR taking over the role of DR.
The problem you describe has been around for a while and I have seen
people using
decent workarounds without requiring protocol changes to solve this
problem.
Rgds
Shraddha
*From:*Alexander Okonnikov [mailto:alexander.okonni...@gmail.com]
*Sent:* Monday, April 24, 2017 3:33 PM
*To:* Shraddha Hegde <shrad...@juniper.net>;
draft-ietf-ospf-link-overl...@ietf.org; ospf@ietf.org
*Subject:* Re: draft-ietf-ospf-link-overload-06 - DR migration
Hi Shraddha,
For planned link maintenance there still could be traffic disruption.
Even if router with overloaded link is detached from broadcast link,
the latter still could be used by other routers on this one. If router
with overloaded link was DR, traffic between other routers on
broadcast link could be disrupted. Am I correct?
24.04.2017 12:55, Shraddha Hegde пишет:
Hi Alexander,
The objective of this draft is to re-route the traffic from the
link that is expected to undergo maintenance
And the case of broadcast links is explained in sec 5.2 which
achieves the objective.
The case you described may be relevant for unplanned link-down
events which is outside the scope of this draft.
Thanks
Shraddha
*From:*Alexander Okonnikov [mailto:alexander.okonni...@gmail.com]
*Sent:* Thursday, April 20, 2017 6:50 PM
*To:* draft-ietf-ospf-link-overl...@ietf.org
<mailto:draft-ietf-ospf-link-overl...@ietf.org>; ospf@ietf.org
<mailto:ospf@ietf.org>
*Subject:* draft-ietf-ospf-link-overload-06 - DR migration
Hi authors,
In case when the node that has the link to be overloaded is DR (for
broadcast/NBMA link case), taking this link out of service could be
disruptive. What if to modify procedure in such manner that when BDR
receives Link-Overload-sub-TLV from DR, it generates Network LSA in
advance, before taking DR role. The node with overloading link then
waits some time (for example, 3 secs) and changes its interface
priority
to 0.
Thank you.
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