Thanks for the excellent post @Bruno De Oliveira Novais! @StuartClark (@bigevilbeard) posted a link to this article on Twitter ... Thanks again!! @ittybittypacket fjm
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Please try your install again after reading this post from Python core developer Brett Cannon. *Why you should use _'python -m pip'_ https://snarky.ca/why-you-should-use-python-m-pip/
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Joseph,
Thanks for the detail regarding a copy of the original header. This information is key to understanding the "magic" behind the pre-classify command.
vrs
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Hello cknox1, I've not heard of any Cisco Standard for racking equipment, but there are some familiar terms that provide clues if you're building out more than a few racks. * ToR Switch = Top of Rack -- Use this switch for connections to all devices within the same rack and possibly the racks to either side. * EoR Switch = End of Row -- Use this switch to terminate uplink connections from all the ToR switches in the aisle. This can be a distribution layer switch or may be a core layer switch dependent upon how much capacity you need and the size of your installation. There's another train of thought about locating the EoR Switch in the middle of the row/line-up to minimize long cable runs, but if the connections are optical, there's little difference. In general, you need to ensure you have adequate room between equipment for proper air flow and cooling. You generally want to position heavier equipment near the bottom of the rack to avoid a top heavy rack that can tip over. You may want to consider using patch panels to tie equipment in different racks together, but in today's Ethernet-rich environment, switches take the place of patch panels. Finally, here's a link to some information as food for thought: http://www.anchor.com.au/hosting/planning/Server_Rack_Equipment_Layout_and_Cable_Organisation
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Hello dake_zh,
The line item appears to refer to the Cisco ONE Software program that governs software purchasing and upgrades.
Specifically, the item appears to fall under the Cisco ONE perpetual model outlined in this At A Glance brochure, and speaks to base functions in the device.
Cisco ONE for Access (switching and wireless), WAN, and Data Center are available through the perpetual model. The software is organized by domain (access, WAN, and data center) and product type: Foundation for base functions and Advanced for more complex customer use cases (Figure 2).
I didn't find the exact part number you mention, but this page provides some additional information on Cisco ONE for WAN part numbers along with purchase guidance.
HTH
--- fjm
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I realize this is an old post, but it was referenced in the answer to a recent question regarding the configuration of a back-to-back T1 connection.
My interest here was in providing a bit of extra information that was asked for by huangedmc in his follow-on question, specifically: ** Also, why are the T1's generally believed to have 1.544M of bandwidth, when it's actually 1.536M? (24 * 64K) **
This is a great question and deserves an answer that is found within this wikipedia article on Digital Signal 1 -- "A total of 1.536 Mbit/s of bandwidth is achieved by sampling each of the twenty-four 8-bit DS0s 8000 times per second. This sampling is referred to as 8-kHz sampling (See Pulse-code modulation ). An additional 8 kbit/s of overhead is obtained from the placement of one framing bit, for a total of 1.544 Mbit/s"
In other words, the additional 8 kbps needed to get from 1536 kbps to 1544 kbps is framing overhead unrelated to the data that is being carried. It allows the two ends of the T1 to determine where a T1 frame (physical layer) starts and stops.
--- fjm
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I've been unable to find the extra background videos and associated files, but I did manage to find the session videos and slides for the three DevNet classes on ciscolive.com. DevNet-1040 -- Introduction to Python Network Programming for Network Architects and Engineers - Part 1: The Basics (2017 Berlin) DevNet-1041 -- Introduction to Python Network Programming for Network Architects and Engineers - Part 2: Python OS, File and Network Pr… DevNet-1042 -- Introduction to Python Network Programming for Network Architects and Engineers - Part 3: Building Additional Tools (201… fjm
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