On Fri, 4 Dec 2015, Donald Sharp wrote:
All -
In 3 days I plan to collapse into master the
volatile/patch-tracking/5/accepted branch.
If you have concerns/questions please speak now.
Comments outstanding on:
zebra: send new interface messages if ifindex changes
No?
Also:
BGP: Update dump to allow Extended Time Format
BGP: crash from not NULLing freed pointers
Quagga: Cleanup RTADV define
Quagga: Fix some more compiler warnings
Add friction on collating short-log release announcement with gratuituous
differences on the topic. Plus there's a string earlier that don't have a
topic.
If it seems annoying to have to get this right, it's annoying when you're
collating the subjects for a release and the topics are all over the place
or missing. ;)
Also, you've put these in rejected:
Lower the default MRAI timer for iBGP peers to 0
Lower the default MRAI timer for EBGP peers to zero
There is work, including some interesting academic work, that suggests 0
is a bad value for MRAI. /Some/ MRAI is advisable to damp down BGP's
incredible and ever-increasing (exponentially) propensity to send messages
as MRAI approaches 0. That work, which was quite old, suggested the best
value was likely under 5s for Internet use - i.e. for eBGP.
A quick summary and links to the primary works are in:
https://tools.ietf.org/html/draft-jakma-mrai-02
No MRAI is likely ungood, from what's been described (empirically and
theoretically). However, the current 30s in Quagga is certainly way, way
too high, we'd surely all agree.
We /should/ lower that dramatically - just not to 0. I'd be happy to have
the eBGP MRAI set to 5s, and the iBGP one to 1s. Note that some increase
in messaging and hence CPU is unavoidable, but the convergence benefits
should make it worth it for most.
regards,
--
Paul Jakma [email protected] @pjakma Key ID: 64A2FF6A
Fortune:
"Don't hate me because I'm beautiful. Hate me because I'm beautiful, smart
and rich."
-- Calvin Keegan
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