Network design, architecture, thinking, working. Tech.
Oh my. Cisco thinks MPLS is too complicated for Enterprises so it’s invented a new proprietary protocol called EVN (Easy Virtual Network).
Why does Nexus NXOS use ‘switchto’ instead of ‘changeto’ for the CLI ?
Recently I noticed that Cisco is selling “Fabric Ethernet Transceivers” for the Nexus switch family. Some research shows that these are replacements for 10GBaseSX SFP modules. Importantly, it’s cheaper to install new cabling than to buy 10BaseSR SFP+ modules.
It’s been a long time coming but this EOL/EOS notice from Cisco on the MGX family signals the final death throes for ATM.
I resent the fact that Cisco partners get more information than Customers on Cisco’s website. Shows you who Cisco thinks the Customer really is.
What special powers do resellers have that makes them more effective ?
How does withholding information from Customers give a better outcome ?
Me ? Many resellers are not competent enough to be business and need a headstart to be useful to customers. Without some sort of “special needs” assistance, they wouldn’t be in the race.
Too harsh ? IBM and HP don’t rely on resellers to win business. Why does Cisco ?
These all suggest that the time for planning and designing Service Modules is over. There are no suggestions that service modules for the Nexus 7000 will be developed that I can see. I can prognosticate that it would slow down the development of the core switch / route / performance functions, and it will be some years before those core capabilities is complete enough that service modules would become viable product development tasks — they might be in development, but not much chance of going into production. [^1]
Do I sound bitter about Service Modules ? A bit. I’ve had a number of hard to solve problems that lasted months before code fixes arrived. I’ve been fan of the NAM but the price is now far removed from it’s practical value. USD$30K List is way over priced for its capabilities and even with a 30% discount, you can buy a lot of network management systems that deliver much better functions and features for that price.
Cisco IOS and Native VLANs – some brief notes to myself.
In years gone by, power supplies for chassis switches were notoriously complicated. Some work with 110V only, some with 240V. Couldn’t be combined with other power supplies – all models identical. This led to lots of piles of spare power supplies in the corner of the data centre somewhere hoping they could be reused one day.
So it’s refreshing to see the flexibility of the power supplies for the Nexus 7000.
Why does a Cisco IOS SX switch not let you use VLANs 1002 − 1005 ?
Found this in the Cisco IOS 15.1M manuals today
IP Routing: EIGRP Configuration Guide, Cisco IOS Release 15.1M&T
Goodbye Message
The goodbye message is a feature designed to improve EIGRP network convergence. The goodbye message is broadcast when an EIGRP routing process is shut down to inform adjacent peers about the impending topology change. This feature allows supporting EIGRP peers to synchronize and recalculate neighbor relationships more efficiently than would occur if the peers discovered the topology change after the hold timer expired.
