NCS-5501 has additional off-chip buffer (~50ms at 100G) NCS-5001 has on-chip buffer only
On Thu, Dec 29, 2016 at 9:23 AM Stephen Fulton <[email protected]> wrote: > I have not used the 5501 but I've been told to be mindful of the buffers > on it, specifically when shifting from higher to lower bps ports. > That's SOP for switches, less usual for devices sold as routers though > (the ME3600 & ASR920 come to mind). > > -- Stephen > > > > On 2016-12-29 9:19 AM, Phil Bedard wrote: > > What kind of protocols are you running on the network? What’s the > likelihood of running some user services or more advanced features on the > new “core” boxes? Cisco gear the NCS 5501 would probably be my choice, > it’s substantially less expensive than the 5502 if you don’t need the 100G > density or still need to support 1G. The low scale version of the box > would probably fit your needs fine, and they’ve made enhancements in 6.1.2 > where the low scale versions can fit an Internet table now if need be. On > the lower end that’s a bit tougher but the price point on the 5501 may be > low enough it makes sense to use it everywhere. > > > > Phil > > -----Original Message----- > > From: cisco-nsp <[email protected]> on behalf of > CiscoNSP List <[email protected]> > > Date: Tuesday, December 27, 2016 at 23:04 > > To: "[email protected]" <[email protected]> > > Subject: [c-nsp] PE "Sprawl" - P/Core Router suggestions. > > > > Hi Everyone (Apologies in advance for the long post :) ) > > > > > > We have multiple POPs, of varying sizes, no true "core"....due to > size initially(# of customer tails @ POPs), collapsed design was used to > reduce capex/improve ROI. > > > > > > Hardware currently used are ME3600's/ASR920's/ASR1Ks(LNS/Transit), > and TOR switches 4900's, Nex3Ks > > > > > > Primary service offering is L3VPN, and as we aggregate with a large > number of carriers, customers can pick/choose tails to suit > budget/bandwidth/sla's etc > > > > > > Interpop connections are currently going into our ASR920's, and as > they have a limited # of 10G ports(4), we are having to add more ASR920's, > purely for 10G...not ideal, not scaleable, and increasingly difficult to > manage. > > > > > > So, looking to put a more modular(Hierarchical two-layer - "core" > and "aggregation" ) design in place, that is easily > replicable/templated/flexible. > > > > > > Hardware (Cisco house) - Ive looked at so far: > > > > > > ASR9001 for our larger POPs, but 10G port density on them is an > issue...4 onboard, and they only support the 4 port 10G MPAs(2 line card > slots, so 2 of these)....so total 12 x 10G? > > ASR1K - I see they have released the 1001/2-HX with the 1002 having > an EPA slot - So, 8 x 10G onboard, and with an EPA 10x10G a total of 18 x > 10G ports - but as these are very very new, Im guessing very pricey? > > NCS - Very new, and know very little about them - NCS5001/NCS5002 - > 10G port density definitely not an issue(40 + 80)...but they are an "MPLS > agg router"...So, potentially an option if we went BGP-free "core"? > > Then we have the bigger "chassis" brothers of the ASR9K/1K and > NCS...all being a lot more $, and taking up a lot more real-estate in the > Rack.. > > > > ASR9001 - "looked" like an ideal candidate, but the limited number > of 10G ports is an issue > > ASR1K - 1002-HX - Looks fantastic, but I would imagine very big $ if > fully populated with 10G ports > > NCS - Unsure on these as they are very new, and docs on them are a > little sparse...i.e. Could they be an option, if we went BGP-free in the > core? > > Other Options? > > > > > > Then for our smaller pops (that have 2-4 ASR920's(PEs) - Core/Agg > box for these is quite a challenge...we would still need something with > 10x10G ports to give us scale(PEs) and also for Interpop....any suggestions > here would be greatly appreciated :) > > > > > > For our "larger" POPs, where we will see 6+ (ASR920's) PEs - Dual > 10G connectivity to the 2 Core/Agg routers will quickly burn lots of ports > (As well as the needed Interpop connections) - Are mini PE "rings" an > option...i.e. maybe 4 x ASR920's, east-west connected, with just 2 having > 10G to the core/Agg? > > > > > > Appreciate any suggestions/comments/recommendations - Cheers > > > > > > _______________________________________________ > > cisco-nsp mailing list [email protected] > > https://puck.nether.net/mailman/listinfo/cisco-nsp > > archive at http://puck.nether.net/pipermail/cisco-nsp/ > > > > > > > > _______________________________________________ > > cisco-nsp mailing list [email protected] > > https://puck.nether.net/mailman/listinfo/cisco-nsp > > archive at http://puck.nether.net/pipermail/cisco-nsp/ > > > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
