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After receiving user complaints, I took it upon myself to investigate the issue. Upon inspection of my entire network, including EX2300 (two or three units in a cluster) and EX3400 (two units in a cluster), I discovered packet drops occurring on the egress of the users' 1Gb ports. I promptly opened a ticket with Juniper for assistance, but unfortunately, they were unable to provide a solution. They did acknowledge the presence of microbursts, but beyond that, their support was limited.
In an attempt to mitigate the issue, I configured the following:
set chassis fpc 0 pic 0 q-pic-large-buffer
set chassis fpc 1 pic 0 q-pic-large-buffer
Regrettably, this configuration adjustment did not yield the desired results.
If anyone has any further insights or suggestions on how to address this problem of packet drops on the egress ports, I would greatly appreciate your assistance.
Hi, nobody any suggestion?
set chassis fpc 0 pic 0 q-pic-large-bufferset chassis fpc 1 pic 0 q-pic-large-buffer
Have you tried this?
set class-of-service shared-buffer percent 100
I recommend this setting for all deployments. I have seen drastic improvements by using this.
Yes, I forgot to mention it here. I am using this command on every switch. I was wondering if 100 is the appropriate number. There isn't a specific "magic number" - what is considered best practice? It's not always beneficial to have the maximum value. If I don't use this command, what is the default value?