[OSPF] draft-ietf-ospf-two-part-metric : Max metric handling

Shraddha Hegde <shraddha@juniper.net> Tue, 06 October 2015 09:58 UTC

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From: Shraddha Hegde <shraddha@juniper.net>
To: "draft-ietf-ospf-two-part-metric@ietf.org" <draft-ietf-ospf-two-part-metric@ietf.org>
Thread-Topic: draft-ietf-ospf-two-part-metric : Max metric handling
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Date: Tue, 6 Oct 2015 09:58:09 +0000
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Cc: OSPF WG List <ospf@ietf.org>
Subject: [OSPF] draft-ietf-ospf-two-part-metric : Max metric handling
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Authors,

As per my understanding of the draft, SPF calculation uses sum of metric from the interface cost and the network to router cost advertised by the neighbor.
Handling of MAX metric is not described in the draft.  Since the metric will be sum of 2 16 bit numbers it can exceed the normal 0xffff metric value and the draft should talk about how to handle these cases.

Rgds
Shraddha