@networkSwagger wrote:
Most of the customers I know, they transitioned to OSPF.
And I only encountered EIGRP on my Cisco Labs. hahahaha.
Actually, I've seen a LOT of EIGRP out "in the wild."
Some very large customers... I can't name the places, but let's just say some really large enterprises and some really large service providers... they have huge investments in Cisco and huge networks built on EIGRP. The amount of time it would take and the risk of core network outages are huge blocks in the way of them moving off EIGRP. The sentiment is usually "The network is working fine, we can't risk massive problems for the sake of changing something just to change it. We have no reason to stop using EIGRP..."
That mindset pretty much knocks everyone but Cisco off the table when new products are evaluated, tested, etc. I've seen some HUGE network messes (we're talking 40,000+ static routes) on networks where they layered Juniper SRX 5k series into huge data centers built on Cisco 6500s and CSM modules (on the order of 50 SRX devices and 100+ Cisco 6500s and Nexus 7ks)
Most places (understandably) don't want to get themselves into those kind of situations... so the answer is "well if we just keep using Cisco this is all really easy..." which means in many cases they may not be buying the best product to suit their needs -- they're buying the path of least resistance.
By having EIGRP open and support start to show up in competing products (honestly, I would be very surprised if Juniper had working, usable, field-ready support in less than 2 years), at least the door would, in theory, open up to other vendors because the argument of "we don't want to mess with our EIGRP core" no longer automatically precludes other vendors from making an entry into the network.
I am not a pundit, nor a blogger, nor an expert of any kind whatsoever ( ) but I would say once the standard is ratified, look to some of the more agile vendors (Brocade comes to mind...) to have support for it earlier than Juniper. Juniper may have something in a non-supported release, but typically those bleeding-edge releases take a really long time to filter into supported releases. We're still a long ways off from having ubiquitous support for EIGRP, but at least strides are being made.