nanog mailing list archives
Re: Strange behavior on the Juniper MX240
From: Mark Tinka <mark@tinka.africa>
Date: Fri, 6 May 2022 09:55:51 +0200
On 5/5/22 21:50, Nick Olsen wrote:
His instance drove us crazy for a bit. The device would learn a route, show that it was installed (show routes) but traffic to said prefix would bounce net unreachable. We even pushed a static just for S&G's and that still didn't resolve it. It was a single prefix that a customer had reported.
Start with the memory command first and see where that gets you. But keep a watchful eye out for this to happen again (as the DFZ grows). Eventually your only option will be to filter routes and rely on a default or upgrade.
These are the reasons why I was saying that while there may be some commands to move FIB allocations around, it's a lot of admin. because the DFZ is very dynamic, and FIB programming issues due to lack of slots that affect different prefixes in different ways can have you chasing your tail for weeks before you figure things out.
I think doing this should be a short-term solution as you make plans to get newer hardware. As a long-term strategy, it will tax day-to-day operations.
Mark.
Current thread:
- Re: Strange behavior on the Juniper MX240, (continued)
- Re: Strange behavior on the Juniper MX240 Mark Tinka (May 05)
- Re: Strange behavior on the Juniper MX240 Paschal Masha (May 04)
- Re: Strange behavior on the Juniper MX240 Nehul Patel (May 04)
- RE: Strange behavior on the Juniper MX240 Tony Wicks (May 04)
- Re: Strange behavior on the Juniper MX240 Sabri Berisha (May 04)
- Re: Strange behavior on the Juniper MX240 Nehul Patel (May 04)
- Re: Strange behavior on the Juniper MX240 Mark Tinka (May 05)
- Re: Strange behavior on the Juniper MX240 Nick Olsen (May 05)
- Re: Strange behavior on the Juniper MX240 Nehul Patel (May 05)
- Re: Strange behavior on the Juniper MX240 Nick Olsen (May 05)
- Re: Strange behavior on the Juniper MX240 Nehul Patel (May 05)
- Re: Strange behavior on the Juniper MX240 Nehul Patel (May 05)
- Re: Strange behavior on the Juniper MX240 Mark Tinka (May 06)
- Re: Strange behavior on the Juniper MX240 Saku Ytti (May 06)
- Re: Strange behavior on the Juniper MX240 Mark Tinka (May 06)
- Message not available
- Re: Strange behavior on the Juniper MX240 Saku Ytti (May 06)
- Re: Strange behavior on the Juniper MX240 Mark Tinka (May 06)