Hello Redditors,
I've got an ASR1004 with ESP20 and SIP40 and 2x10GE interfaces, as far I can understand, the ESP20 means the router can output up to 20 Gbps of traffic (according to this documentation this should be the case unless I am missing something https://www.cisco.com/c/en/us/support/docs/routers/asr-1000-series-aggregation-services-routers/200674-Throughput-issues-on-ASR1000-Series-rout.html)
Currently, this router has a LaCP link towards a switch (2x10GE), everything was working fine until this link started to receive over 11 Gbps of traffic (basically sits at 11.5 Gbps in and since we don't deal with multicast, it's also 11.5 Gbps out), now I am seeing a lot of input drops (overruns) in the interface and the overall latency increased by 30 - 40 ms. Below 10.8 Gbps everything starts to work normally again.
This leads me to believe it's congestion and the latency is due to buffering, but I really don't know why this is happening, shouldn't this router still be capable of processing at least 8 Gbps of additional traffic? There are no other interfaces aside from this LaCP.
Or the 20 Gbps "output" was just marketing and the real number is just 10? and they say 20 because is the sum of the "input + output" (which I find misleading tbh). Anyone with experience using this platform that can share some light?
Thank you in advance
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