Hello kronicklez,
in general it is not a secret that the less the packet size is, the less bandwidth throughput is possible.
Although I do not have experience with ACX5448, my personal guess is that the Broadcom ASIC inside is handling packets <= 512 Bytes differently than bigger packets.
If you can't find someone other within this community who can help you with your questions, the only remaining way is asking JTAC about this.
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Original Message:
Sent: 11-23-2020 07:21
From: Unknown User
Subject: Frame loss test 10G when using using frame size below 512 byte through L2VPN on ACX5448..
Hi E.K.H,
IGP i'm used ISIS. For MPLS i'm using LDP as signalling. It just basic setup just to simulate from traditional Metro-E using MPLS-TP to use MPLS-IP. All SFP already swap but the result is same.
Thanks
Original Message:
Sent: 11-20-2020 06:57
From: Elchin Khudiyev
Subject: Frame loss test 10G when using using frame size below 512 byte through L2VPN on ACX5448..
Hi, are you using LDP/RSVP or Labeled-ISIS to exchange label information across MPLS network? Any bandwidth reservations or traffic congestion on the MPLS path?
What type of L2VPN is being tested? Could you please provide configuration snip of that part from both sides and maybe overall topology to better understanding how devices are connected.
Please provide the following output from both sides: show mpls lsp extensive
Have you also tried to swap SFP modules and re-check after that? Any possible issues checked on physical part?
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Regards,
Elchin
Original Message:
Sent: 11-17-2020 06:33
From: Unknown User
Subject: Frame loss test 10G when using using frame size below 512 byte through L2VPN on ACX5448..
Hi all,
Currently i'm testing 10g traffic transit through L2VPN using ACX5448 and PE. All the jumbo MTU already configured properly and no issue in reachibility. The issue is when i generate traffiic 10g from Tester 1 to Tester 2 using frame size below 512 byte then we will detect frame loss on tester itself that look like frame loss start when traffic on 7g. On ACX itself we not see any traffic drop when execute command "show interface extensive". Is there any special knob to make sure it can success 10g traffic through MPLS? Below is my test topology.
Tester 1 (generate traffic 10g) -----> (L2VPN) PE1 (MPLS) ---------- (MPLS) PE2 (L2VPN) --------> Tester 2 (receiver should recevied 10g).
Thanks and appreciate your feedback.