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Rishard Chapoteau

My Networking adventures

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

Category: Multicast

RTP Flow Monitor

August 18, 2020 Rishard Chapoteau

I thought I made a post about this a while ago, but it turns out I never got back around to it :-). While I have a lot of issues with Cisco at the moment ....

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Multicast multicast, nexus, nxos, rtp

Nexus 9000 Queue drops

July 1, 2020July 13, 2020 Rishard Chapoteau

This particular post won't have a resolution to the problem I'm currently experiencing but I want to illustrate the problem now and HOPEFULLY have another blog that actually has the resolution later if Cisco ever ....

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IPFM, Multicast cisco, ipfm, NAT, queue

No More Tree-Sid

June 24, 2020July 1, 2020 Rishard Chapoteau

A lot is changing right now with our Next Gen Backbone lab. Its been up and in full swing for a bit. Due to Covid I haven't been in the office to take advantage of ....

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Multicast, Segment Routing segment routing, tree-sid

IGMP Messages

February 19, 2020 Rishard Chapoteau

Recently in troubleshooting an issue I saw some odd IGMP messages that I had never seen before. One of the record types was called "block-old-sources". From RFC 3376 It states BLOCK OLD SOURCES: Indicates that ....

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Multicast igmp, multicast

show ip igmp event-history

February 14, 2019February 14, 2019 Rishard Chapoteau

During a late night troubleshooting session I came across this command on my Cisco Nexus switches. show ip igmp event-history debug may be a life saver when troubleshooting Multicast issues. I wish I had known ....

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Multicast cisco, multicast, nexus

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 ....

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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 ....

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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 ....

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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 ....

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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 ....

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

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  • About Me (2)
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  • Multicast (13)
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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.

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