Hi ZhiBo
On 26/04/18 09:50 , Huzhibo wrote:
Hi,
Here are some clarification questions about the flex-algo draft.
1. As described in section 5, in path computation for a flex-algorithm,
the node firstly needs to prune the links not included for this
flex-algorithm, then run SPF or other algorithm within the pruned
topology. If a node supports multiple algorithms, does this mean the
node needs to maintain multiple pruned topologies?
no, there is no need to maintain any additional topologies for Flex-algo
functionality.
There is however a need to run multiple SPFs, one for each Flex-algo in
which the calculating node participates.
2. If one path computed in algorithm-1 with latency metric and another
path computed in algorithm-2 with bandwidth metric traverse the same
link(s) in the network, can the latency or bandwidth SLA be guaranteed
for the service? Or the path may need to be re-computed and adjusted to
another link to avoid potential performance degradation?
above depends on how you define you Flex-algo 1 and 2 respectively. If
you define it in a way that they may share links, they may impact each
other. If you define in in a way that they would never share any link,
they would not impact each other. You choose the behavior you need -
that's the beauty of the Flex-algo solution.
thanks,
Peter
ZhiBo Hu
*发件人:*Lsr [mailto:[email protected]] *代表 *Acee Lindem (acee)
*发送时间:*2018年4月17日22:44
*收件人:*[email protected]
*主题:*[Lsr] LSR Working Group Adoption Poll for Flex Algorithm Drafts
This begins a two-week adoption poll for the following Flex Algorithm
drafts:
https://datatracker.ietf.org/doc/draft-hegdeppsenak-isis-sr-flex-algo/
https://datatracker.ietf.org/doc/draft-ppsenak-ospf-sr-flex-algo/
The adoption poll will end at 12:00 AM EST on May 2^nd , 2018. Please
indicate your support of opposition of the drafts.
Additionally, the authors are amenable to combining the drafts into a
single draft. If you have an opinion, please state that as well.
Thanks,
Acee
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