About James Jun

James Jun · 05-24-2025

Hello,Seeing the following message from syslog on A9K-48X10GE-1G-TR Powerglide card:LC/0/0/CPU0:May 24 23:08:07.427 EDT: pfm_node_lc[373]: %PLATFORM-FCA-2-TX_RX_TIMEOUT : Set|lda_server[5011]|0x1032003|Device driver for device 'Tom_POLLER3' detected ...

James Jun · 04-23-2021

Hello, I have an NCS540 terminating 10GE to a Metro-E provider. I need to set 2 Gbps CIR shaping and need to have a small 2ms committed burst (Bc) facing that provider. But unlike ASR9K, I can't configure burst when doing shaping on NCS 540 and ser...

James Jun · 03-05-2021

When doing multi-hop async BFD sessions on ASR9K, the following restrictions / caveats are noted:1. HW-offload is not supported2. LC CPU which hosts the session is randomized according to line cards listed under 'multipath include location X/X/CPU0...

James Jun · 03-05-2021

Hello,In previous post (https://community.cisco.com/t5/xr-os-and-platforms/asr9000-forwarding-latency/td-p/2708349) back in 2015, it was identified that Typhoon to Typhoon forwarding latency on ASR9K is estimated to be around 15usec. Is there such fi...

James Jun · 12-14-2020

Hello,We have a couple 5th Gen (Lightspeed Plus) line cards with 400GE/100GE combo ports coming our way. I've been reading the xrdocs.io article regarding dynamic buffering (http://xrdocs.io/asr9k/blogs/2018-09-06-dynamic-packet-buffering/) used on ...

James Jun · 03-30-2022

Just to close the loop on this, we do continue to see these messages, but they are infrequent -- we seem them occur once every week or once every 2-3 weeks. We used to see them more often, once every week, or once every few days, in the past. It a...

James Jun · 03-06-2021

Thanks for the note, this helps. So it seems on multi-line card (chassis based) platforms, multi-hop BFD facing iBGP RRs is more hassle and complications than it is worth (solving one outage risk scenario by creating another outage risk). FWIW, belo...

James Jun · 03-06-2021

iBGP RR sessions are multi-hop by nature. If the router dies for whatever reason (due to accidental power loss, software upgrade, or reload rack 0, etc), unless session is culled manually, it will stay up on RR side until hold-down timer has expired...

James Jun · 12-05-2020

Thank you for the detailed information! I'll take a look at the SMU (though 6.5.3 CSCvs36064 SMU Readme lists 5 prerequisites, where they themselves also have prerequisites, it appears to have complex dependencies). The second question that I have -...

James Jun · 05-06-2020

It looks like this is happening even on eXR 7.1.15. Time to open TAC case

Member Since	‎11-25-2015 01:47 PM
Date Last Visited	‎05-24-2025 10:19 PM
Posts	33
Total Helpful Votes Received	15

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LDA FMEA TIMEOUT ERR on Powerglide

NCS 540: shaper Committed Burst?

ASR9K Multi-hop BFD resiliency

ASR 9000 forwarding latency in 2021

ASR9K Default TM Behavior w/ respect to egress port buffering

Re: Continuous PM_OUTPUT_EN_PIN_HI alarm on ASR 9922

Re: ASR9K Multi-hop BFD resiliency

Re: ASR9K Multi-hop BFD resiliency

Re: ASR 9901 with bad External TCAMs?

Re: Continuous PM_OUTPUT_EN_PIN_HI alarm on ASR 9922