My Networking adventures
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 about various hardware platforms and issues, the one platform that hasn’t burned me yet is the Nexus 9k series with
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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 gives me a good one. *UPDATE* – Cisco came up with a resolution which was some odd programming to how
Read MoreA 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 as much as I would like to. We have the backbone in the lab working the way we think it
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I like the general idea of using a Fex because it makes my life easier 99% of the time in having a central management point for all of my connectivity. Having our 5K’s VPC’d together and then VPC’ing down to our 2K’s makes life easy for the most part. For those not familiar with the
Read MoreRecently 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 the Source Address [i] fields in this Group Record contain a list of the sources that the system no longer
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I’ve been working with Cisco on the our Next Gen backbone build with Segment Routing and Crossworks Optimization Engine and keep coming across stumbling blocks which is unfortunate. Crossworks function is to communicate to XR-PCE which controls the Segment Routing environment. Unfortunately in the 1.0 deployment COE only works on one interface, and XR-PCE only
Read MoreToday my company and Cisco had a giant kickoff meeting for the Next Gen Backbone, and it mostly went well, but there was a lot of Cisco giving us bad news in how we can’t do certain things with Segment Routing or Tree-Sid. ASM is currently not supported in Tree-Sid which is going to be
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Just wanted to make a post on the fact that I’m starting to try to teach myself Python. I had an employee working for me that was learning Python on the job here. He created a few really good scripts that helped our operations tremendously. Then he left the company and took that skill set
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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 about it before! I’m still learning all of the different commands but so far the most powerful looks to be
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