One of the viewers of Rachel Traylor’s excellent Graph Algorithms in Networks webinar sent me this feedback:
I think it is too advanced for my needs. Interesting but difficult to apply. I love math and I find it interesting maybe for bigger companies, but for a small company it is not possible to apply it.
While a small company’s network might not warrant a graph-focused approach (I might disagree, but let’s not go there), keep in mind that almost everything we do in IT rides on top of some sort of graph:
One of the viewers of Rachel Traylor’s excellent Graph Algorithms in Networks webinar sent me this feedback:
I think it is too advanced for my needs. Interesting but difficult to apply. I love math and I find it interesting maybe for bigger companies, but for a small company it is not possible to apply it.
While a small company’s network might not warrant a graph-focused approach (I might disagree, but let’s not go there), keep in mind that almost everything we do in IT rides on top of some sort of graph:
Cisco Viptela SD-WAN solution builds a full-mesh topology between vEdge devices by default when there are no Control Policies implemented. This means that vEdges tries to build an IPSec/GRE tunnel to every reachable TLOC public IP addresses no matter which site or color (transport network) TLOCs belong to. We have already change the default behavior by using the restrictoption (chapter 2) under tunnel interfaces. In this way, tunnels are only established between TLOCs belonging to the same color. In this chapter, we are going to create a Hub and Spoke topology by implementing a Control Policy where the vSmart advertises TLOC/OMP routes from site 30 to sites 10 and 20 and TLOC/OMP routes from sites 10 and 20 to site 30. vSmart doesn’t advertise TLOC/OMP routes between sites 10 and 20. Site 10 and 20 will be our Branch/Remote sites and site 30 will be the Hub/DataCenter site.
Figure 5-1 recaps the operation of the Overlay Management Protocol (OMP). vEdge1 in site 10 advertises TLOC route advertisement to vSmart where it describes its System Id, transport color, and encapsulation method as well as Public/Private IP and restricts attributes (among several other attributes). vSmart forwards TLOC routes received from vEdge1 to both vEdge2 (site 20) and vEdge3 (site 30). vEdge1 also advertises OMP routes where it describes the reachability information about its local subnet 172.16.10.0/24 bound to VPN10.
Figure 5-1: TLOC Route advertisement.
I’ve been saying the same thing for years, but never as succinctly as Alastair Cooke did in his Understand Your Single Points of Failure (SPOF) blog post:
The problem is that each time we eliminated a SPOF, we at least doubled our cost and complexity. The additional cost and complexity are precisely why we may choose to leave a SPOF; eliminating the SPOF may be more expensive than an outage cost due to the SPOF.
Obviously that assumes that you’re able to follow business objectives and not some artificial measure like uptime. Speaking of artificial measures, you might like the discussion about taxonomy of indecision.
I’ve been saying the same thing for years, but never as succinctly as Alastair Cooke did in his Understand Your Single Points of Failure (SPOF) blog post:
The problem is that each time we eliminated a SPOF, we at least doubled our cost and complexity. The additional cost and complexity are precisely why we may choose to leave a SPOF; eliminating the SPOF may be more expensive than an outage cost due to the SPOF.
Obviously that assumes that you’re able to follow business objectives and not some artificial measure like uptime. Speaking of artificial measures, you might like the discussion about taxonomy of indecision.
Scott Berkun wrote another great article that’s equally applicable to the traditional notion of design (his specialty) and the network design. Read it, replace design with network design, and use its lessons. Here’s just a sample:
Scott Berkun wrote another great article that’s equally applicable to the traditional notion of design (his specialty) and the network design. Read it, replace design with network design, and use its lessons. Here’s just a sample:
All good parties come to an end, and the one that Intel has enjoyed for an unbelievable dozen years, starting with the rollout of the “Nehalem” Xeon E5500 processors back in March 2009, is over. …
The Intel Datacenter Party Starts Feeling The Hangover was written by Timothy Prickett Morgan at The Next Platform.
Today's Heavy Networking podcast, sponsored by Tempered Networks, dives into how Tempered builds a software-defined perimeter with native zero trust, leveraging the Host Identity Protocol (HIP), Tempered's Airwall software, cryptographic identities, and secure overlays. Our guests from Tempered are Jeff Hussey, Founder and CEO; and Bryan Skene, CTO.
The post Heavy Networking 574: Get HIP With Zero Trust And Tempered Networks (Sponsored) appeared first on Packet Pushers.
The Dominican Republic’s new Internet Exchange Point (IXP) already has 24 members, three of which began exchanging traffic in November 2020. Another four will start this quarter – including the largest operators in the country. The IX.DO was born after frustrated attempts. A government-led initiative in 2007 never became operational and the data center NAP […]
The post In the Dominican Republic IX.DO Begins Silent Production, with Several Committed Members appeared first on Internet Society.
Exhibit A:
It’s been a year and more and I think a lot of us are on the ragged edge of burning out completely. Those that think they are superhuman and can just keep grinding away at things without acknowledging what’s going on are kidding themselves. I know I’m feeling it too even though I have a pretty decent handle on what’s going on. Let’s explore some of the ways it’s impacting us and what should be done, if anything can even be done.
I don’t feel like doing anything remotely creative right now. The cooking will get finished. The dishes will be done. The things in my floor will be picked up and put away. But beyond that? Good. Luck. I’m not feeling any kind of drive to do anything beyond that.
Remember when everyone was picking up quarantine skills? Baking, cooking, knitting, crocheting, home improvement, or even an instrument? Those were fun days filled with massive uncertainty and a need to distract ourselves from what might be coming next. However, those skill pickups are things that need Continue reading