Re: [j-nsp] ISIS flaps caused by MX em0 MTU

2024-09-19 Thread Andrey Kostin via juniper-nsp
Hi Nitzan, Maybe this article could be helpful because it refers to similar symptoms: https://supportportal.juniper.net/s/article/PacketIO-PFE-process-may-drop-small-fragments-of-TCP-and-UDP-packets-destined-to-the-routing-engine https://prsearch.juniper.net/problemreport/PR1796344 Kind regard

[j-nsp] ISIS flaps caused by MX em0 MTU

2024-08-30 Thread Nitzan Tzelniker via juniper-nsp
Something I discovered a few days ago and I would like to understand if others saw it and you mitigate it. The em0/em3 (RE to PFE ) on Juniper MX is using a hardcoded MTU of 1500. All of the traffic on that interface is encapsulated with Juniper TTP protocol As a result, any control packet which us