Skip to content
  • 12:20 am
  • Friday
  • May 23, 2025

Rishard Chapoteau

My Networking adventures

Latest News
RTP Flow Monitor  |  
Nexus 9000 Queue drops  |  
No More Tree-Sid  |  
5K / 2K FEX issues  |  
IGMP Messages  |  

Author: Rishard Chapoteau

Adding Multicast to a Cisco NCS 540

December 4, 2018January 28, 2020 Rishard Chapoteau

We recently got some Cisco NCS 540's which we need to deploy.  By default when they were shipped they didn't have multicast activated or even have the RPM installed. For those familiar with the ASR ....

Continue reading
Multicast ASR, multicast, NCS

Non Blocking Multicast

October 11, 2018October 11, 2018 Rishard Chapoteau

My current company has gone all in with Cisco on their IPFM (IP Fabric for Media) using a "Spine/Leaf" solution.  I put Spine/Leaf in quotes because it definitely isn't traditional.  We have a chassis acting ....

Continue reading
IPFM, Multicast dcnm, ipfm, multicast, nbm

Troubleshooting 0 bit traffic

October 10, 2018October 10, 2018 Rishard Chapoteau

I just ran into an issue where I could see the multicast join was happening and the mroute seemed to be formed on my Nexus 7K, but we were receiving 0 bits of traffic.  This ....

Continue reading
Multicast multicast

Credited Vs Uncredited Buffers

August 31, 2018August 31, 2018 Rishard Chapoteau

One of the biggest issues we ran into in 2017 was finding out that Multicast was buffered differently on the Cisco Nexus platform.  This took a while to troubleshoot because you really have to know ....

Continue reading
Multicast buffers, egress buffer, multicast, nexus

Multicast on a 2K Fex

August 2, 2018August 2, 2018 Rishard Chapoteau

I just had an issue where I was attempting to do a packet capture on a 2K Fex that was attached to a Nexus 5K.  Since you can't use the Fex port as a destination ....

Continue reading
Multicast, Wireshark 2k, 5k, cisco, fex, multicast

Continuity Count Errors

August 1, 2018 Rishard Chapoteau

Recently I had an issue where I would up troubleshooting multicast with a TON of CC errors.  We were sending a 20 Mbps stream to a station, and they were only receiving 15 Mbps.  They ....

Continue reading
Multicast, Wireshark CC Errors, multicast, wireshark

IGMP V3 Mode 1 VS Mode 2

July 31, 2018August 1, 2018 Rishard Chapoteau

We had an ongoing issue recently with multicast receivers on our 4507 that would loose their multicast groups every so often and we couldn't explain why.  It looked like the problem was the 4507.  We ....

Continue reading
Multicast 4500, 4507, cisco, DCM, multicast

Multicast Forwarders

July 31, 2018August 1, 2018 Rishard Chapoteau

I just had a good lesson last night with Cisco TAC in multicast Forwarding that took a few hours to figure out.  The initial call I received was that multicast was going in and out ....

Continue reading
Multicast 7k, cisco, DCM, multicast, nexus

My First Post

July 27, 2018July 31, 2018 Rishard Chapoteau

I've been thinking about doing a blog of my networking career for a bit after listening to the Packet Pushers podcast, and I'm finally doing it.  I have seen a lot of things over the ....

Continue reading
About Me

Posts navigation

Newer posts
Categories
  • About Me (2)
  • General Switching (1)
  • IPFM (2)
  • Multicast (13)
  • Network Automation (2)
  • Segment Routing (3)
  • Wireshark (2)
Tags
2k 5k 7k 4500 4507 ASR buffers CC Errors cisco Crossworks DCM dcnm egress buffer fex igmp ipfm multicast NAT nbm NCS nexus nxos python queue rtp segment routing tree-sid wireshark
About Me

My name is Rishard Chapoteau and I have been doing some form of computer networking since 1997.  I started out more on the desktop side of things working with Banyan Vines.  I was a Cisco MCSE which I kept for a few years but I eventually moved on to do more Cisco networking.  I’ve had many Cisco certifications over the years, but I have never attained CCIE status. I’ve been both an employee and a consultant at many different locations.  I’ve worked for Government agencies and private firms.  Currently I work in the entertainment industry dealing with a lot of video and multicast.

Proudly powered by WordPress | Theme: news-box by wpthemespace.com.