Hi,
OSPF overload causes LSAs advertised by the router to set its metrics to 65535 (max metric).
In the NSSA it would depend on NSSA configuration whether summaries or default-lsa is generated by ABR and sent into NSSA.
If summaries are allowed, then max-metric is set.
Example:
Summary 1.1.1.1 1.1.1.5 0x80000002 126 0x20 0x41f0 28
mask 255.255.255.255
Topology default (ID 0) -> Metric: 65535
Aging timer 00:57:54
Installed 00:02:05 ago, expires in 00:57:54, sent 00:02:03 ago
Last changed 00:02:05 ago, Change count: 2
If no-summaries and only default-lsa is sent into NSSA generated by ABR, then overload max-metric will not be set, as the default-metric is a static value.
On vmx5/8, the metrics can be verified:
show ospf database area 2 advertising-router <router-id-vmx5> extensive
Cheers,
------------------------------
Ashvin
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Original Message:
Sent: 06-03-2021 13:37
From: Unknown User
Subject: OSPF overload configuration
I have the following diagram