* Posts by cweinhold

15 publicly visible posts • joined 21 Feb 2017

Ethernet advances will end Nvidia's InfiniBand lead in AI networks


Doesn't add up

"by 2028, 45 percent of Gen AI workloads will run on Ethernet – up from less than 20 percent now."

"She nonetheless predicted 30 percent of generative AI workloads will run on InfiniBand – up from fewer than 20 percent today."

So if Ethernet and Infiniband today both have less than 20% of the generative AI workloads today, what network technology IS being used? WIFI? That could explain all the hallucinations.

No joke: FTC boss goes on the Daily Show and is told Apple tried to block her


Predatory pricing

The author's mention of Verizon charging $5 for SMS messaging is business-as-usual for telcos where service charges have little in common with service costs. In the 1980's, we were charged $1.30 monthly on our land lines for the convenience of TOUCH TONE dialing even though processing DTMF signals was cheaper and more efficient for the telco than PULSE dialing.

I also remember how the baby bells unleashed their lobbyists at the state level in a desperate attempt to exclude competition and preserve every possible revenue source, no matter how archaic.

The only way to know the true cost of a service is when there is healthy competition.

Cisco: Don't use 'blind spot' – and do use 'feed two birds with one scone'


Changing language to avoid offense? Pfft... [linux ~]$ please-go-away -9 <pid>

But idioms are a different story. Idioms that make perfect sense in one narrow geographic or cultural community may be completely lost on others.

IT phone home: How to run up a $20K bill in two days and get away with it by blaming Cisco


Re: Ah, the good'ol days..

When working properly, ISDN did GREAT things. ISDN backup could kick in so fast that connections wouldn't drop or stall. That was a lifesaver for order-taking agents, bank tellers, and call centers were money was on the line.

Ironically, the place where ISDN had the biggest impact on humanity was with radio broadcasting. You could always tell when a news interview or a sports play-by-play was being carried over a muffled analog phone line or a crystal clear ISDN line. Every sports arena, news room, government office, and radio broadcaster in the world had ISDN lines just for that. In fact, it wasn't until Covid-19 forced those broadcasters home that ISDN was replaced with VoIP. https://www.forbes.com/sites/marksparrow/2020/07/02/british-company-rescues-radio-industry-with-a-brilliant-device-for-broadcasting-from-home/


Re: The good old days :)

Pulse dialing by hand from the switch? That's incredible! That makes those guys with the 2600Hz toy whistles seem like script kiddies.

Cisco's latest switch packs 32 800G ports into a pizza box


Re: IEEE 1588v2 and SyncE support with nanosecond-level accuracy

Telcos still have a lot of SONET/SDH carrying everything from T1's to STM's. All those S's stand for SYNCHRONOUS and none of it works without precisely sync'd clocks on both sides of the link. Now that more and more POPs are being interconnected with Ethernet, these protocols allow for that. Precision timestamping is also useful for packet dedupe, chronoology, and correlation at an ASIC-level scale. I.e., to identify causes of microbursts and incast collapses.

Lop off about five or six orders of magnitude in precision and you'll get to human-scale porn monitoring of the type you're talking about.

Tweaks to IPv4 could free up 'hundreds of millions of addresses'


Re: 0/8 no way

All of the IP change suggestions will break thousands of home-brew administrative systems and low-quality open source projects whose authors thought their sketchy IP parsing algorithm was somehow better than inet_aton. This is a good thing, since such software likely has many other logic problems and needs to be replaced or updated.

Another good thing is that /31 and .0 are mainstream today. The first thing I do with new network gear is configure a /31 and, if it won't do it, I chuck it.

A final good thing is that we already did this in the 90's with CIDR (rfc 1519), which changed fundamental treatment of IP addresses. The Internet was much smaller back then, but CIDR was still a pretty big deal at the time.

VMware customers have watched Broadcom's acquisitions and don't like what they see


Re: Plan B

"... Broadcom was pitting Nutanix against VMware"

that's an interesting angle... I wonder if Broadcom's VMware ELA was up for renewal, and they decided it would just be cheaper to buy the company!

Cisco issues blizzard of end-of-life notices for Nexus 3K and 7K switches


Re: product lifetime

Tell that to Accellion's FTA appliance.

Cisco’s 'intuitive security' tool can’t handle MAC address randomization out-of-the-box


A colleague just confirmed that his iphone's MAC address DID change on the same SSID after 24 hours.


Are you sure Apple has backed away from periodically changing MACs within an SSID? (every 24 hours, according to this June WWDC video https://developer.apple.com/videos/play/wwdc2020/10676/)

I'd like to find documentation confirming that.

Empirically, I haven't seen MACs change yet, but it's only been a few days. My fear is that they might still do it, but maybe weekly or monthly, or maybe only when a device reconnects to the same SSID.

The Register translates VMware's VMworld Europe 2018 news into plain English – our free guide for every reader


One more.

Additionally, the new release will feature integration with VMware NSX-T enabling the automated deployment and lifecycle management of the network virtualization software as well as support for containerized applications and Kubernetes.

Translation: Remember NSX-vSphere? Neither do we!

Amid Trump-China tariff tiff, Cisco kit prices to resellers soar up to 25%


Country-of-origin labeling

I don't know what it means with regard to tariffs, China, Trump, and tech, but I still giggle at some country-of-origin labeling:


America-China tariff tiff could flip the switch on Cisco price hikes


price hikes are here

Cisco jacked prices on 2500 products today by 5-10%

Cisco polishes HALO, flashes enlarged HyperFlex


Re: performance

Even hybrid systems depend heavily on SSD caching. So, any given moment, app performance on a hybrid system is going to be on par with an all-flash system.

What all-flash delivers is consistent performance gains for all read/write patterns, even the ones that normally blow cache away (databases).