Page MenuHomePhabricator

Set minimum-links 2 to AMS-IX LACP
Closed, ResolvedPublic

Description

[edit interfaces ae2 aggregated-ether-options]
-    minimum-links 1;
+    minimum-links 2;

We're above 10G of traffic so if one (soon 2) link goes down, it will saturate the other one, paging people, until someone disable it.

Better to take the whole bundle down and let BGP balance traffic to the transit links.

Relevant doc: https://www.juniper.net/documentation/en_US/junos/topics/topic-map/link-protection-aggregated-ethernet-interfaces.html#id-configuring-aggregated-ethernet-minimum-links
No mention of the change to cause any flap.

Event Timeline

ayounsi triaged this task as High priority.Tue, May 19, 2:08 PM
ayounsi created this task.
Restricted Application added a project: Operations. · View Herald TranscriptTue, May 19, 2:08 PM
Restricted Application added a subscriber: Aklapper. · View Herald Transcript
ayounsi added a subscriber: jbond.Tue, May 19, 2:11 PM

LGTM assuming we don't also configure optimize-aggregate-frr: https://kb.juniper.net/InfoCenter/index?page=content&id=KB34635&actp=METADATA

Mentioned in SAL (#wikimedia-operations) [2020-05-19T14:26:03Z] <XioNoX> Set minimum-links 2 to AMS-IX LACP - T253122

ayounsi closed this task as Resolved.Tue, May 19, 2:28 PM

Thanks! This will also help in case the wrong cable gets bumped into during the new link provisioning.