Categories
news

Missing in action

Those that keep an eye on the tech press may have noticed cries of alarm that there is a global chip shortage, especially if you’re a gamer wanting to get your hands on the latest generation of graphic cards from AMD or Nvidia. The bad news is that it’s not just GPU silicon that’s gone […]

Categories
#JanetAccessProgramme #Technology & Innovation news

Ofcom, Openreach and Dark Fibre

Those who have been following the design, build, and transition of the JAP will be acutely aware of the complexities of building such a network and some of the choices we’ve been forced to make due to the lack of ubiquitous dark fibre. There is, however, some light on the horizon…

Categories
Cloud news

Saving money on ExpressRoute*

*normal caveats about YMMV apply A number of organisations connected to Janet use ExpressRoute to create a dedicated connection from their campus to the Microsoft Azure Platform, others choose to use the multiple high capacity peerings that we have with Microsoft because their requirements are much smaller and a dedicated ExpressRoute connection just doesn’t cost […]

Categories
TrafficManagement

Another update on Janet’s traffic levels as the autumn term ends.

As we approach the end of the calendar year, and are in what would traditionally be a busy period of the year for traffic on the network (after the school half-term and before University autumn term ends), I thought it would be worth doing a follow-up to the blog posts (first, second) earlier in the […]

Categories
news procurement

Little Fluffy Clouds

As part of the growth in the use of Janet for accessing cloud providers, beyond the direct task of building a robust and scalable network, Jisc has tried to increase the number of ways that a user can consume the various services we can provide. In the past, we have made both govroam and the […]

Categories
COVID-19 Response

More (ab)normal thoughts

Following on from last week’s piece on the impact of additional traffic to campuses during the new (ab)normal, I’ve been asked to try and help people through the process of trying to calculate the impact. To be honest, you’ve probably already done this, but just in case there is a spark of insight I’ve tried […]

Categories
COVID-19 Response

The new (ab)normal

With students returning to campus (or not) over the coming weeks, there appears to be a growing level of discussion about the impact on campus networks and Janet. The good news is we think everything is going to be ok.

Categories
#Technology & Innovation

Cloudflare’s “Is BGP Safe Yet” website

We have had a few tickets pointing us at Cloudflare’s Is BGP Safe Yet website (one describing it as “a new website that details internet service providers that don’t tend to their routing“) and telling us that we do not implement BGP safely. We do not yet drop invalid routes using RPKI data, the website […]

Categories
COVID-19 Response TrafficManagement

More observations on Janet traffic during lockdown

It’s almost four weeks since the first blog article I wrote on the changes to traffic patterns on Janet as we moved to working from home. At the end of that I promised an update, so whilst it has been a little longer than planned, here it is. Frankly, not much has changed. We’ve continued […]

Categories
DNS

A brief blip in the DNS

At around 5pm on Wednesday 25th March we received a few reports that some sites on Janet were having issues with DNS resolution. This was caused by the site’s own resolver still performing DNSSEC Lookaside Validation (DLV), and a failure by the operators of the DLV zone that broke the DNSSEC signing of that zone. […]