AI Networks Can't Use SDN. Netris Built What's Next.
Alex Saroyan had about ninety seconds onstage before he made the architectural claim that the rest of the AI-networking conversation has been ducking.
Switching
Ethernet Commoditizes Everything. Except EOS
Halfway through Tom Emmons’ scale-out segment at NFD40, a fellow delegate looked at Arista’s load-balancing slide and said what most of us were thinking… this could have any vendor’s logo on it.
One Throat to Choke, or Any Silicon You Want: Cisco at NFD40
Cisco showed up to NFD40 selling two different pitches in the same session, and nobody on stage reconciled them.
VMware NSX is something something awesome
At times I have trouble focusing on writing articles for some of the presentations I am exposed to at Tech Field Day. Because of that, I really wanted to try something different.
Using Deny ACEs in your PBR ACL on your Nexus 7k
Quite a while ago I had a need for some network duct tape… Policy Based Routing while useful should only IMHO be used as a temporary fix.
Cisco Nexus 2000: A Love/Hate Relationship
My feelings towards the Nexus 2000 Fabric Extender (FEX) are hardly a secret. The myriad of design choices and platform limitations present engineers with some rather difficult decisions.
QinQ: IEEE 802.1Q Tunneling
In situations where service providers want to offer transparent LAN services that preserve a customers VLAN tags across your Layer-2 network, this amendment to the IEEE 802.
Brocade and VCS… quite impressive
Our second visit on day 2 of Network Field day was Brocade, who incidentally supplied us with a great lunch!
Juniper QFabric, Junosphere, Automation, and More
The second day of Network Field Day 2 started early at the Juniper EBC, luckily Abner Germanow was prepared with breakfast for the weary and slightly hung over delegates.
NEC and ProgrammableFlow Switching
NEC is currently the only Vendor that is shipping an OpenFlow enabled product today. So naturally, their presentation led off with a message about what they’re bringing to the market.
Cisco Systems Awesomesauce aka Full Tilt Boogie
First of all, I want to say thank you to everyone from Cisco Systems for inviting us into the CCIC (Cisco Cloud Innovation Center), this was an amazing room to hold our discussions.
Network Duct Tape Gone Wrong
As many of you may know, I’m in the middle of a huge network redesign, last week our new firewalls finally arrived and it became time for us to start migrating services onto the edge network I’ve been …
Nexus 7000 vPC Features
Next generation data centers across the world are taking advantage of Cisco’s Virtual PortChannel.
NX-OS 5.2(1) for the Nexus 7000
Rather quietly, at least I never heard anything, on July 29th, Cisco released NX-OS Version 5.2(1) for the Nexus 7000 platform.
SVI Autostate
Switch Virtual Interfaces, or SVIs on Cisco IOS use a feature called autostate to determine the interface availability.
Nexus 1000v – Out of Ports on a Virtual Switch?
Yesterday, work presented an interesting issue I wanted to share with everyone.
Introduction to the Nexus 1000V
The Nexus 1000V is a software-based Cisco NX-OS switch that integrates into VMware vSphere 4 and operates inside the VMware ESX hypervisor.
Nexus Virtual Port Channel (vPC)
The Nexus 7000 and 5000 series have taken port-channel functionality to the next level by enabling port-channels to exist between links that are connected to different devices.
Introduction to Private VLANs
The concepts behind Private VLANs are in fact rather simple, but it is quite easy to get discombobulated in the details.
Measuring Cable Lengths on a Catalyst Switch
A while back, I was playing on a 3750 switch in a customers lab and came across something I’ve never seen before. It seems that some Cisco switches have a built in Time-domain reflectometer, or TDR.
Using Discontiguous Wildcard Masks in ACLs
Unlike subnet masks, wildcard masks allow you to use discontiguous bits which enable you to match on a range of values.