tag:blogger.com,1999:blog-10557620924135524782024-02-20T09:59:07.773-08:003BR CommsJonathan Samshttp://www.blogger.com/profile/01009099135807273432noreply@blogger.comBlogger25125tag:blogger.com,1999:blog-1055762092413552478.post-38125117167846859782017-11-06T06:22:00.002-08:002017-11-06T06:22:21.464-08:00Thought provoking article on DevOps and some possible down falls...<div dir="ltr" style="text-align: left;" trbidi="on">
<a href="https://lionfacelemonface.wordpress.com/2015/03/08/devops-is-bullshit-why-one-programmer-doesnt-do-it-anymore/">DevOps Is BS: Why One Programmer Doesn’t Do It Anymore</a><br />
<br />
Having experienced the friction between Dev & Ops departments and the path of least resistance leading to bypassing of policy and guidance I have some sympathy with the author. He makes some good points near the end but if your easily offended but frank and fruity language you might want to skip this one...... </div>
Jonathan Samshttp://www.blogger.com/profile/01009099135807273432noreply@blogger.com0tag:blogger.com,1999:blog-1055762092413552478.post-45662965157971886302017-10-04T11:13:00.003-07:002017-10-04T11:13:50.923-07:00TCP congestion control Reno, CUBIC, Vages & BBR<div dir="ltr" style="text-align: left;" trbidi="on">
This was a really good article to help decipher the hype behind BBR with lots of back ground and well written.<br />
<br />
<a href="https://blog.apnic.net/2017/05/09/bbr-new-kid-tcp-block/">https://blog.apnic.net/2017/05/09/bbr-new-kid-tcp-block/</a></div>
Jonathan Samshttp://www.blogger.com/profile/01009099135807273432noreply@blogger.com0tag:blogger.com,1999:blog-1055762092413552478.post-54199878028881353162017-07-14T05:55:00.002-07:002017-07-14T05:56:14.836-07:00Cisco Nexus NX-OS command shortcuts and scripting<div dir="ltr" style="text-align: left;" trbidi="on">
Over your time with a Cli you get to know the shortcuts and useful but lightly published commands and shortcuts to proficient and fast access to info you need when trouble shooting. The following link to <a href="http://firewall.cx/">firewall.cx</a> is a greate article bring a wide ranging subset of these most useful commands all tougher in one place.<br />
<br />
<a href="http://www.firewall.cx/cisco-technical-knowledgebase/cisco-data-center/1206-nexus-nx-os-commands-scripting-hints-and-tips.html">NEXUS NX-OS: USEFUL COMMANDS, CLI SCRIPTING, HINTS & TIPS, PYTHON SCRIPTING AND MORE</a></div>
Jonathan Samshttp://www.blogger.com/profile/01009099135807273432noreply@blogger.com0tag:blogger.com,1999:blog-1055762092413552478.post-63747527924413300172017-07-06T04:26:00.000-07:002017-07-06T04:26:50.290-07:00Team "Chaos" day<div dir="ltr" style="text-align: left;" trbidi="on">
<br />
My team took part in a couple of Chaos days in getting ready to support the first fully in house production work load on AWS. This has resulted in our partner Cloud Reach putting out a blog on the experience of facilitation of the chaos! This also resulted in some further press articles below.<br />
<br />
<a href="https://www.cloudreach.com/blog/training-cloud-operations-teams-met-office/">CloudReach Blog</a><br />
<br />
<a href="http://diginomica.com/2017/07/06/met-office-chaos-welcome-new-cloud/">http://diginomica.com/2017/07/06/met-office-chaos-welcome-new-cloud/</a><br />
<br />
<a href="http://www.cloudpro.co.uk/hr/training/6904/met-office-asks-cloudreach-to-purposefully-break-its-systems">http://www.cloudpro.co.uk/hr/training/6904/met-office-asks-cloudreach-to-purposefully-break-its-systems</a><br />
<br />
<br /></div>
Jonathan Samshttp://www.blogger.com/profile/01009099135807273432noreply@blogger.com0tag:blogger.com,1999:blog-1055762092413552478.post-14203356911531317612017-05-12T02:14:00.000-07:002017-05-12T02:14:24.006-07:00<div dir="ltr" style="text-align: left;" trbidi="on">
<h1 style="background-color: white; box-sizing: inherit; color: #4a4a4a; font-family: OpenSans, sans-serif; font-size: 2.25rem; line-height: 3.375rem; margin: 0px 0px 10px;">
<a href="https://www.linux.com/news/linux-workstation-security/2017/5/4-best-practices-web-browser-security-your-linux-workstation">4 Best Practices for Web Browser Security on Your Linux Workstation</a></h1>
<div>
<br /></div>
</div>
Jonathan Samshttp://www.blogger.com/profile/01009099135807273432noreply@blogger.com0tag:blogger.com,1999:blog-1055762092413552478.post-565448008978033012016-12-04T05:23:00.003-08:002016-12-04T05:23:56.113-08:00New GCHQ CyberChef Open Source tool has some useful networking elements. <div dir="ltr" style="text-align: left;" trbidi="on">
Just played with the new CyberChef tool GCHQ has put up on <a href="https://gchq.github.io/CyberChef/?recipe=%5B%7B%22op%22%3A%22Parse%20IPv6%20address%22%2C%22args%22%3A%5B%5D%7D%5D&input=RkUwMjo6Mg">GitHub</a>, Just had a quick play with the "Parse IPv6 address" & "Change IP Format" functions also useful for embedding IPv4 into IPv6 and checking IPv6 addressing among other things!<br />
<br />
It runs in Chrome or Firefox, give it a go! <a href="https://gchq.github.io/CyberChef/#">CyberChef - The Cyber Swiss Army Knife</a><br />
<br /></div>
Jonathan Samshttp://www.blogger.com/profile/01009099135807273432noreply@blogger.com0tag:blogger.com,1999:blog-1055762092413552478.post-51222191622900285382016-12-04T04:54:00.000-08:002016-12-04T05:01:44.660-08:00Troubleshooting BGP Neighbor Establishment<div dir="ltr" style="text-align: left;" trbidi="on">
This is the most through explanation and has a really logical flowchart for troubleshooting, BGP neighbour issues that I have found, hope its helpful to you also.<br />
<br />
<a href="http://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/22166-bgp-trouble-main.html%C2%A0">Why Do BGP Neighbors Toggle Between Idle, Connect, and Active States?</a><br />
<br />
<a href="http://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/22166-bgp-trouble-main.html">Troubleshooting BGP Flow Charts</a></div>
Jonathan Samshttp://www.blogger.com/profile/01009099135807273432noreply@blogger.com0tag:blogger.com,1999:blog-1055762092413552478.post-82214171108986466262016-10-20T01:05:00.000-07:002016-10-20T01:12:57.896-07:00Simulating Emulating WAN Latency in Linux - Linux Advanced Routing & Traffic Control<div dir="ltr" style="text-align: left;" trbidi="on">
<div style="text-align: left;">
<span style="font-family: inherit;">Needing to simulate delay to test an application ability to fill a pipe in the prototype lab, I needed to emulate the latency to get a more realistic view. The blog post from Benjamin Cane (<a href="http://bencane.com/2012/07/16/tc-adding-simulated-network-latency-to-your-linux-server/" style="font-size: 14.6667px;" target="_blank">tc: Adding simulated network latency to your Linux server</a>) got me onto this method. I also found <a href="http://lartc.org/manpages/tc.txt" target="_blank">tc man page</a> & </span><a href="https://wiki.archlinux.org/index.php/Advanced_traffic_control" style="font-family: inherit;" target="_blank">ArchLinux Advanced Traffic Control Wiki</a><span style="font-family: inherit;"> useful for a deeper dive.</span><br />
<span style="font-family: inherit;">Also see my previous post on </span><a href="http://3brcomms.blogspot.co.uk/2015/07/toxiproxy-wan-simulator-of-sorts.html" style="color: #33aaff; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; text-decoration: none;">Toxiproxy - WAN simulator of sorts!</a></div>
</div>
Jonathan Samshttp://www.blogger.com/profile/01009099135807273432noreply@blogger.com0tag:blogger.com,1999:blog-1055762092413552478.post-28687149696849057282016-10-18T03:00:00.003-07:002016-10-20T01:08:33.157-07:00Foundation of setting up a CloudOps team<div dir="ltr" style="text-align: left;" trbidi="on">
I found this useful and reassuring that we are going down the right route in the new challenge I have taken on.<br />
<br />
<a href="https://medium.com/aws-enterprise-collection/4-foundational-investments-for-your-cloud-journey-c65c1adfd6e9#.pjszw2udz " target="_blank">4 Foundational Investments for Your Cloud Journey</a></div>
Jonathan Samshttp://www.blogger.com/profile/01009099135807273432noreply@blogger.com0tag:blogger.com,1999:blog-1055762092413552478.post-73963401865620156492015-09-08T01:20:00.003-07:002015-09-08T01:20:46.632-07:00The Jump Box/Jump Server is Not Dead – it is more necessary than ever<div dir="ltr" style="text-align: left;" trbidi="on">
worth a read :-) <a href="http://skyportblog.com/2015/08/27/the-jump-boxjump-server-is-not-dead-it-is-more-necessary-than-ever/" target="_blank">http://skyportblog.com/2015/08/27/the-jump-boxjump-server-is-not-dead-it-is-more-necessary-than-ever/</a></div>
Jonathan Samshttp://www.blogger.com/profile/01009099135807273432noreply@blogger.com0tag:blogger.com,1999:blog-1055762092413552478.post-2313163649412768942015-07-08T01:09:00.003-07:002015-07-08T01:09:31.840-07:00How to receive a million packets per second<div dir="ltr" style="text-align: left;" trbidi="on">
Interesting blog post with help with my understanding of the design of a Linux networking stack.<br />
<br />
<a href="https://blog.cloudflare.com/how-to-receive-a-million-packets/" target="_blank">https://blog.cloudflare.com/how-to-receive-a-million-packets/</a></div>
Jonathan Samshttp://www.blogger.com/profile/01009099135807273432noreply@blogger.com0tag:blogger.com,1999:blog-1055762092413552478.post-83404938319634642262015-07-08T01:01:00.002-07:002015-07-08T01:01:42.952-07:00Ostinato - packet crafter/traffic generator <div dir="ltr" style="text-align: left;" trbidi="on">
Ostinato aims to be "Wireshark in Reverse" and become complementary to Wireshark.<br />
<br />
<a href="http://ostinato.org/" target="_blank">http://ostinato.org</a></div>
Jonathan Samshttp://www.blogger.com/profile/01009099135807273432noreply@blogger.com0tag:blogger.com,1999:blog-1055762092413552478.post-36236313269002445162015-07-08T00:57:00.000-07:002015-07-08T00:57:06.955-07:00 Toxiproxy - WAN simulator of sorts!<div dir="ltr" style="text-align: left;" trbidi="on">
Toxiproxy is a framework for simulating network conditions. It's made specifically to work in testing, CI and development environments, supporting deterministic tampering with connections, but with support for randomized chaos and customization.<br />
<br />
<a href="https://github.com/shopify/toxiproxy">https://github.com/shopify/toxiproxy</a> </div>
Jonathan Samshttp://www.blogger.com/profile/01009099135807273432noreply@blogger.com0tag:blogger.com,1999:blog-1055762092413552478.post-30423250722257681732015-06-02T05:09:00.002-07:002016-10-20T01:09:46.285-07:00Time isnt money<div dir="ltr" style="text-align: left;" trbidi="on">
<span style="font-family: inherit;">Interesting take on meetings and their true cost "People say
"time is money," but they are wrong; time is much more
valuable" </span><br />
<div style="margin: 0cm 0cm 0.0001pt;">
<span style="font-family: inherit;"><br /></span></div>
<div style="margin: 0cm 0cm 0.0001pt;">
<span style="font-family: inherit; font-size: 13.5pt;"><a href="http://boz.com/articles/time-isnt-money.html" target="_blank">http://boz.com/</a><o:p></o:p></span></div>
<div style="margin: 0cm 0cm 0.0001pt;">
<span style="font-family: inherit;"><br /></span></div>
<div style="margin: 0cm 0cm 0.0001pt;">
<span style="font-family: inherit; font-size: 13.5pt;">Also found some
resonance with <a href="http://ethancbanks.com/">Ethan C Banks</a> post in his
news letter “The Hot Aisle Newsletter” under “Behind The Tweet”<o:p></o:p></span></div>
<div style="margin-bottom: .0001pt; margin: 0cm;">
<span style="font-family: inherit;"><br /></span></div>
<div style="margin: 0cm 0cm 0.0001pt;">
<span style="font-family: inherit; font-size: 13.5pt;">"when I don't
meet my productivity goals by the end of the week, despite an enormous amount
of expended energy. It's disheartening to feel mentally exhausted, and yet
still have the roughly the same list of tasks I started with."<o:p></o:p></span></div>
<div class="MsoNormal">
<span style="font-family: inherit;"><br /></span></div>
<div class="MsoNormal">
<span class="MsoBookTitle"><span style="font-family: inherit;">The plan of action, time to make some changes!</span><o:p></o:p></span></div>
</div>
Jonathan Samshttp://www.blogger.com/profile/01009099135807273432noreply@blogger.com0tag:blogger.com,1999:blog-1055762092413552478.post-23667782681472672362015-02-02T02:14:00.004-08:002015-02-02T02:22:19.416-08:00Multigigabit (mGIG) - NBASE-T – IEEE 802.3bz - 2.5 and 5 Gigabits per second over 100m of Cat 5e cable.<div dir="ltr" style="text-align: left;" trbidi="on">
<div class="Default">
<br /></div>
<div class="MsoNormal">
<span lang="NL">Pre standards alliance
of companies have created <a href="http://www.nbaset.org/">NBASE-T</a>, it can
increase network speeds of existing Cat 5e/Cat 6 cables up to 5 Gbps at lengths
up to 100m. It seems to have now been resently pickup by the IEEE </span><span class="MsoBookTitle"><a href="http://grouper.ieee.org/groups/802/3/NGEBASET/public/index.html"><span style="letter-spacing: 0pt;">IEEE 802.3 Next Generation Enterprise Access BASE-T
PHY Study Group</span></a> <o:p></o:p></span></div>
<div class="Default">
<br /></div>
<div class="Default">
Cisco multigigabit will
be supported on... (as of 02/02/2015)<o:p></o:p></div>
<div class="Default" style="margin-left: 36.0pt;">
Cisco
Catalyst 4500 <o:p></o:p></div>
<div class="Default" style="margin-left: 36.0pt;">
Cisco
Catalyst 3850<o:p></o:p></div>
<div class="Default" style="margin-left: 36.0pt;">
Cisco
Catalyst 3560-CX and possibly the 2960-CX?<o:p></o:p></div>
<div class="MsoNormal">
<br /></div>
<div class="Default" style="margin-bottom: 3.95pt;">
Cisco
Catalyst 4500 current apparent caveats <o:p></o:p></div>
<div class="Default">
“The Cisco Catalyst
4500 product family supports the technology with a new 48-port line card that
supports 12 multigigabit switch ports. All the ports, including the multigigabit
ports, support POE, POE+, and UPOE. Furthermore, line cards offer significant
investment protection by supporting the new multigigabit technology on both
types of Cisco Supervisor Engines - Supervisor 7 and Supervisor 8.”<o:p></o:p></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
It has been driven by the up coming 802.11ac Wave 2 where the use of extended 5G range will allow for speeds wireless speeds greater than 1 Gigabit. With AP's currently cabled with CAT5e/6 the cabling back to the NER would become the bottle neck, the cost of upgrading this cable to CAT6a/7 would slow adoption for sure.</div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
What I cant find is a Server/Workstation NIC that will support this technology at this time? I can see a demand for this with from our power workstation users, as even with port channels of bonded at 1 Gigabit the links limit the flows to the individual channel that flow takes. The cost of replacing floor plate copper is mostly prohibitive at this time this could provide an acceptable compromise if the tech does migrate beyond it current exclusive use for networking hardware? </div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<span class="MsoBookTitle">Other useful links.....<o:p></o:p></span></div>
<div class="MsoNormal">
<span class="MsoBookTitle"><a href="http://www.cisco.com/go/multigigabit"><span style="letter-spacing: 0pt;">http://www.cisco.com/go/multigigabit</span></a>
<o:p></o:p></span></div>
<br />
<div class="Default">
<a href="http://www.cisco.com/c/dam/en/us/products/collateral/switches/catalyst-4500-series-switches/at-a-glance-c45-733656.pdf">http://www.cisco.com/c/dam/en/us/products/collateral/switches/catalyst-4500-series-switches/at-a-glance-c45-733656.pdf</a>
<o:p></o:p></div>
<div class="Default">
<br /></div>
<div class="Default">
If you know of any NIC vendors that are planning to support please comment below!</div>
</div>
Jonathan Samshttp://www.blogger.com/profile/01009099135807273432noreply@blogger.com0tag:blogger.com,1999:blog-1055762092413552478.post-80032740989503316452015-01-13T08:19:00.001-08:002015-01-13T08:19:33.991-08:0040 Gbps & 100 Gbps cabling infrastucture<div dir="ltr" style="text-align: left;" trbidi="on">
I have been working on putting in the new Nexus equipment with 40/100 Gbps capability over the past few months. After searching around today I found this link this page, wish I had found it earlier! Good summary of technology and infrastructure requirements including Link Loss Budgets.<br />
<br />
<a href="http://www.cablinginstall.com/articles/print/volume-18/issue-11/features/data-center-migrating-to-40-and-100g-with-om3-and-om4-connectivity.html">http://www.cablinginstall.com/articles/print/volume-18/issue-11/features/data-center-migrating-to-40-and-100g-with-om3-and-om4-connectivity.html</a></div>
Jonathan Samshttp://www.blogger.com/profile/01009099135807273432noreply@blogger.com0tag:blogger.com,1999:blog-1055762092413552478.post-52979594128289473692015-01-02T03:04:00.001-08:002015-01-02T03:08:44.109-08:00VRF Lite on Nexus 5600 <div dir="ltr" style="text-align: left;" trbidi="on">
We are using 5696Q with VRF-Lite with BGP as the routing protocol, stumbled upon this from<a href="http://blog.ipspace.net/" target="_blank"> Ian Pepenlnjak</a>, hes found similar findings so that's good! Anyway not worth rewriting his post either as it will be much better than anything I could put out right now.<br />
<a href="http://blog.ipspace.net/2014/12/vrf-lite-on-nexus-5600.html?m=1#more" target="_blank">VRF Lite on Nexus 5600 </a></div>
Jonathan Samshttp://www.blogger.com/profile/01009099135807273432noreply@blogger.com0tag:blogger.com,1999:blog-1055762092413552478.post-63372861748020965112015-01-01T11:41:00.001-08:002015-01-01T11:55:07.668-08:00Chistmas Linux Media server build<div dir="ltr" style="text-align: left;" trbidi="on">
Over Christmas brake I have been playing with a Linux media server build as I haven't had much chance lately at work to keep my Linux skills up.<br />
<br />
Basic Build HP Micro server NL54 + 4 Gig ECC Ram.<br />
<br />
OS Ubuntu 14.04 (Should have gone for Mint)<br />
Plex - Media libary + trans coder and DNLA - some fun making profile work for Bravia TV but forums are good.<br />
CatFish File search - cli locate + grep also good!<br />
Thunar File Manager - Batch rename with Regex to assist in getting library clear for Plex.<br />
<div class="r" style="text-align: left;">
<a href="https://www.greyhole.net/">Greyhole - Redundant Storage Pooling using Samba</a></div>
<br />
<div class="entry-title" itemprop="name" style="text-align: left;">
Graphical System monitoring tool quick Google and found <a href="http://www.omgubuntu.co.uk/2011/11/5-system-monitoring-tools-for-ubuntu" target="_blank">5 System Monitoring Tools for Ubuntu</a> &<span style="font-size: small;"><a href="http://www.upubuntu.com/2012/06/list-of-best-system-monitoring.html" itemprop="url"> A List Of Best System Monitoring Applications (GUI & CLI) For Ubuntu 12.04/Linux Mint 13</a>, </span>I Picked Open System Monitor.</div>
<div class="entry-title" itemprop="name" style="text-align: left;">
<br /></div>
<div class="entry-title" itemprop="name" style="text-align: left;">
So far so good no real issues and I hadn't got as rusty as I had feared! Trans coding well even though its only a little AMD 1.5 dual core.</div>
</div>
Jonathan Samshttp://www.blogger.com/profile/01009099135807273432noreply@blogger.com0tag:blogger.com,1999:blog-1055762092413552478.post-55378053324051935182014-08-11T01:22:00.001-07:002015-01-02T03:08:56.284-08:00Privacy Badger - Stop Third Party Trackers<div dir="ltr" style="text-align: left;" trbidi="on">
<div style="text-align: left;">
<span style="color: #b4b4b4; font-family: Arial, Helvetica, sans-serif; font-size: small;">Privacy Badger is a browser add-on that stops advertisers and other third-party trackers from secretly tracking where you go and what pages you look at on the web. If an advertiser seems to be tracking you across multiple websites without your permission, Privacy Badger automatically blocks that advertiser from loading any more content in your browser.</span></div>
<div style="text-align: left;">
<span style="font-family: Arial, Helvetica, sans-serif;"><span style="color: #b4b4b4; font-size: small;"><br /></span>
<span style="color: #b4b4b4; font-size: small;">Its in Beta but I have been running it in Firefox and Chrome and its working well, limiting the tracking for Ads and webpages are loading faster so check it out!</span></span></div>
<div style="text-align: left;">
<span style="color: #b4b4b4; font-family: 'Open Sans Condensed'; font-size: small;"><br /></span>
<span style="color: #b4b4b4; font-family: 'Open Sans Condensed'; font-size: small;"><a href="https://www.eff.org/privacybadger">https://www.eff.org/privacybadger</a></span></div>
</div>
Jonathan Samshttp://www.blogger.com/profile/01009099135807273432noreply@blogger.com0tag:blogger.com,1999:blog-1055762092413552478.post-89594083357901981082014-02-10T01:17:00.003-08:002014-02-10T01:17:32.274-08:00Forget the Nexus 6001 the Nexus 5600 just replaced it! well kind of....<div dir="ltr" style="text-align: left;" trbidi="on">
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Cisco look to have rebranded the Nexus 6001 in to the Nexus 5672 platform
but added Fibre Channel support.<br />
<br />
They have also released a 2U logical replacement for the Nexus 5596
called the Nexus 56128, somewhat confusing for the customer and kind of brakes
there numbering schema they have been running, Cisco a bit more planning, Prior
Planning Prevent Poor Performance? Bit harsh but hay, they were announced at
Cisco Live Europe, the Data Sheet is out at <a href="http://www.cisco.com/en/US/prod/collateral/switches/ps9441/ps9670/ps13653/datasheet-c78-730760.html">Cisco.com</a>
but the from my CCO login I can’t get a price on anything other than software
upgrades as yet!<br />
<br />
Well the upshot, can’t see why you would buy a Nexus 5500 or the Nexus 6001 over
the new Nexus 5600’s once you can actually get a price for them ;-)<br />
<br />
Also announced the Cisco Nexus 3172 it’s a 10-Gbps SFP+-based ToR switch
with 48 SFP+ ports and 6 QSFP ports, allot of forwarding power to Top of Rack!<br />
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Jonathan Samshttp://www.blogger.com/profile/01009099135807273432noreply@blogger.com0tag:blogger.com,1999:blog-1055762092413552478.post-9629990746439946692014-01-17T04:16:00.000-08:002014-01-17T04:16:02.781-08:00Nexus 5548 vs 6001<div dir="ltr" style="text-align: left;" trbidi="on">
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The Cisco Nexus 6001 provides higher port density, 48x10G
& 4x40G, throughput, built in Layer 3 and 40G uplinks, although it only
supports FCoE not Native Fiber Channel as the 5548UP. The lack of FC on the 6001 Leaf switch however is not a big problem as I'm sure that Cisco will be building a 1/2/4/8 Gbps SAN Fiber Channel card for
the 6004 allowing for converged networking in the future at the Spine.</div>
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<o:p></o:p></div>
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<strong><span style="font-family: "Arial","sans-serif"; mso-bidi-font-family: "Times New Roman"; mso-bidi-theme-font: minor-bidi;">Switch<o:p></o:p></span></strong></div>
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<strong><span style="font-family: "Arial","sans-serif"; mso-bidi-font-family: "Times New Roman"; mso-bidi-theme-font: minor-bidi;">Port Density<o:p></o:p></span></strong></div>
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<strong><span style="font-family: "Arial","sans-serif"; mso-bidi-font-family: "Times New Roman"; mso-bidi-theme-font: minor-bidi;">Forwarding Rate – Layer 2<o:p></o:p></span></strong></div>
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<strong><span style="font-family: "Arial","sans-serif"; mso-bidi-font-family: "Times New Roman"; mso-bidi-theme-font: minor-bidi;">Forwarding Rate – Layer 3<o:p></o:p></span></strong></div>
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<td style="border-bottom: solid black 1.0pt; border-left: none; border-right: solid black 1.0pt; border-top: solid windowtext 1.0pt; height: 45.75pt; mso-border-alt: solid black 1.0pt; mso-border-left-alt: solid black 1.0pt; mso-border-top-alt: solid windowtext .5pt; padding: 0cm 5.4pt 0cm 5.4pt; width: 2.0cm;" width="76">
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<strong><span style="font-family: "Arial","sans-serif"; mso-bidi-font-family: "Times New Roman"; mso-bidi-theme-font: minor-bidi;">MAC Entries<o:p></o:p></span></strong></div>
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<strong><span style="font-family: "Arial","sans-serif"; mso-bidi-font-family: "Times New Roman"; mso-bidi-theme-font: minor-bidi;">USD List Price<o:p></o:p></span></strong></div>
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Nexus 5548<o:p></o:p></div>
<div align="center" class="MsoNormal" style="text-align: center;">
(N5K-C5548UPM-B-S48)<o:p></o:p></div>
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48 SFP+<o:p></o:p></div>
</td>
<td style="border-bottom: solid black 1.0pt; border-left: none; border-right: solid black 1.0pt; border-top: none; height: 45.5pt; mso-border-left-alt: solid black 1.0pt; mso-border-top-alt: solid black 1.0pt; padding: 0cm 5.4pt 0cm 5.4pt; width: 99.25pt;" width="132">
<div align="center" class="MsoNormal" style="text-align: center;">
960 Gbps or 714.24 mpps<o:p></o:p></div>
</td>
<td style="border-bottom: solid black 1.0pt; border-left: none; border-right: solid black 1.0pt; border-top: none; height: 45.5pt; mso-border-left-alt: solid black 1.0pt; mso-border-top-alt: solid black 1.0pt; padding: 0cm 5.4pt 0cm 5.4pt; width: 99.2pt;" width="132">
<div align="center" class="MsoNormal" style="text-align: center;">
160 Gbps or 240 mpps<o:p></o:p></div>
</td>
<td style="border-bottom: solid black 1.0pt; border-left: none; border-right: solid black 1.0pt; border-top: none; height: 45.5pt; mso-border-left-alt: solid black 1.0pt; mso-border-top-alt: solid black 1.0pt; padding: 0cm 5.4pt 0cm 5.4pt; width: 2.0cm;" width="76">
<div align="center" class="MsoNormal" style="text-align: center;">
32,000<o:p></o:p></div>
</td>
<td style="border-bottom: solid black 1.0pt; border-left: none; border-right: solid windowtext 1.0pt; border-top: none; height: 45.5pt; mso-border-alt: solid black 1.0pt; mso-border-left-alt: solid black 1.0pt; mso-border-right-alt: solid windowtext .5pt; mso-border-top-alt: solid black 1.0pt; padding: 0cm 5.4pt 0cm 5.4pt; width: 67.15pt;" width="90">
<div align="center" class="MsoNormal" style="text-align: center;">
$42,000<o:p></o:p></div>
</td>
</tr>
<tr style="height: 33.4pt; mso-yfti-irow: 2; mso-yfti-lastrow: yes;">
<td style="border-bottom: solid windowtext 1.0pt; border-left: solid windowtext 1.0pt; border-right: solid black 1.0pt; border-top: none; height: 33.4pt; mso-border-bottom-alt: windowtext .5pt; mso-border-left-alt: windowtext .5pt; mso-border-right-alt: black 1.0pt; mso-border-style-alt: solid; mso-border-top-alt: black 1.0pt; mso-border-top-alt: solid black 1.0pt; padding: 0cm 5.4pt 0cm 5.4pt; width: 114.25pt;" width="152">
<div align="center" class="MsoNormal" style="text-align: center;">
Nexus 6001<o:p></o:p></div>
<div align="center" class="MsoNormal" style="text-align: center;">
(N6K-C6001-64P)<o:p></o:p></div>
</td>
<td style="border-bottom: solid windowtext 1.0pt; border-left: none; border-right: solid black 1.0pt; border-top: none; height: 33.4pt; mso-border-alt: solid black 1.0pt; mso-border-bottom-alt: solid windowtext .5pt; mso-border-left-alt: solid black 1.0pt; mso-border-top-alt: solid black 1.0pt; padding: 0cm 5.4pt 0cm 5.4pt; width: 63.8pt;" width="85">
<div align="center" class="MsoNormal" style="text-align: center;">
48 SFP+<o:p></o:p></div>
<div align="center" class="MsoNormal" style="text-align: center;">
4 QSFP+<o:p></o:p></div>
</td>
<td style="border-bottom: solid windowtext 1.0pt; border-left: none; border-right: solid black 1.0pt; border-top: none; height: 33.4pt; mso-border-alt: solid black 1.0pt; mso-border-bottom-alt: solid windowtext .5pt; mso-border-left-alt: solid black 1.0pt; mso-border-top-alt: solid black 1.0pt; padding: 0cm 5.4pt 0cm 5.4pt; width: 99.25pt;" width="132">
<div align="center" class="MsoNormal" style="text-align: center;">
Full Line rate<o:p></o:p></div>
</td>
<td style="border-bottom: solid windowtext 1.0pt; border-left: none; border-right: solid black 1.0pt; border-top: none; height: 33.4pt; mso-border-alt: solid black 1.0pt; mso-border-bottom-alt: solid windowtext .5pt; mso-border-left-alt: solid black 1.0pt; mso-border-top-alt: solid black 1.0pt; padding: 0cm 5.4pt 0cm 5.4pt; width: 99.2pt;" width="132">
<div align="center" class="MsoNormal" style="text-align: center;">
1.28 Tbps<o:p></o:p></div>
</td>
<td style="border-bottom: solid windowtext 1.0pt; border-left: none; border-right: solid black 1.0pt; border-top: none; height: 33.4pt; mso-border-alt: solid black 1.0pt; mso-border-bottom-alt: solid windowtext .5pt; mso-border-left-alt: solid black 1.0pt; mso-border-top-alt: solid black 1.0pt; padding: 0cm 5.4pt 0cm 5.4pt; width: 2.0cm;" width="76">
<div align="center" class="MsoNormal" style="text-align: center;">
256,000<o:p></o:p></div>
</td>
<td style="border-bottom: solid windowtext 1.0pt; border-left: none; border-right: solid windowtext 1.0pt; border-top: none; height: 33.4pt; mso-border-bottom-alt: windowtext .5pt; mso-border-left-alt: black 1.0pt; mso-border-left-alt: solid black 1.0pt; mso-border-right-alt: windowtext .5pt; mso-border-style-alt: solid; mso-border-top-alt: black 1.0pt; mso-border-top-alt: solid black 1.0pt; padding: 0cm 5.4pt 0cm 5.4pt; width: 67.15pt;" width="90">
<div align="center" class="MsoNormal" style="text-align: center;">
$40,000<o:p></o:p></div>
</td>
</tr>
</tbody></table>
</div>
</div>
Jonathan Samshttp://www.blogger.com/profile/01009099135807273432noreply@blogger.com0tag:blogger.com,1999:blog-1055762092413552478.post-43198282275535023862013-12-23T01:11:00.001-08:002015-01-02T03:51:52.453-08:00Cisco 40G BiDi optics<div dir="ltr" style="text-align: left;" trbidi="on">
<div class="MsoNormal">
Working on some Data Center refresh work, looking further
at the most resent Nexus platforms I noticed that Cisco have released a
cleaver 40Gb QSFP that will use only a single fiber pair to transport
40Gb. Currently only available on the Nexus 9000 but I’m sure
something this useful will make its way down the product list.</div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<a href="http://www.cisco.com/en/US/prod/collateral/switches/ps9441/ps13386/datasheet-c78-730160.html">Cisco QSFP 40-Gbps Bidirectional Short-Reach Transceiver Data Sheet.</a><br />
<br />
Update: I have them working now on the Cisco Nexus 5696Q running 7.0 NXOS, currently only prototype setup <10 Meters but they are working well.</div>
</div>
Jonathan Samshttp://www.blogger.com/profile/01009099135807273432noreply@blogger.com0tag:blogger.com,1999:blog-1055762092413552478.post-53643398116160586102013-12-23T00:37:00.000-08:002013-12-23T00:38:19.052-08:00Cisco Catalyst 6500E/SUP720 Architecture<div dir="ltr" style="text-align: left;" trbidi="on">
<br />
Used this this morning for a quick refresher on the 6509E back plane cross connect, another useful posting from Mr Greg Ferro of the <a href="http://packetpushers.net/">Packet Pushers</a> fame. <a href="http://etherealmind.com/cisco-supervisor-720-why-architecture-performance/">http://etherealmind.com/cisco-supervisor-720-why-architecture-performance/</a></div>
Jonathan Samshttp://www.blogger.com/profile/01009099135807273432noreply@blogger.com0tag:blogger.com,1999:blog-1055762092413552478.post-68747418470802007282013-12-18T03:16:00.001-08:002013-12-23T00:38:40.030-08:00Easy Sandbox for your home PC<div dir="ltr" style="text-align: left;" trbidi="on">
If like me your security paranoid/educated (take you pick which one apply to you?) you have set up Sandbox VM's or run boot Linux boot distros form DVD/CD's for that just in case protection from Malware then this might be of interest to you.<br />
<br />
<a href="http://www.sandboxie.com/">http://www.sandboxie.com/</a><br />
<br />
Sandboxie runs your programs in an isolated space which prevents them from making permanent changes to other programs and data in your computer. should be less effort for the every day user that other solution and for 15 euros it will not brake the bank.<br />
<br />
Lifehacker have a install guide and review <a href="http://lifehacker.com/sandboxie-tests-apps-without-risking-your-system-now-s-514339469">here</a></div>
Jonathan Samshttp://www.blogger.com/profile/01009099135807273432noreply@blogger.com0tag:blogger.com,1999:blog-1055762092413552478.post-70922453152191825702013-12-18T02:25:00.000-08:002013-12-18T02:59:05.894-08:00When to hard drives meet their maker? <div dir="ltr" style="text-align: left;" trbidi="on">
Interesting Statistics from Back Blaze on the life of hard drives, they have over 25,000 of them so they have a good sample to work from. Brings home that they are mechanical, they will fail, so keep your backups at the ready. <br />
<br />
<ul style="text-align: left;">
<li>4 years 20% Fail, </li>
<li>6 Years 50% Fail.</li>
</ul>
<br />
<a href="http://blog.backblaze.com/2013/11/12/how-long-do-disk-drives-last/">http://blog.backblaze.com/2013/11/12/how-long-do-disk-drives-last/</a></div>
Jonathan Samshttp://www.blogger.com/profile/01009099135807273432noreply@blogger.com0