Collapsed core -> Traditional

[johnelliot6]

Hi Guys,

We have 5 POP's, each running 7200's (G1's + G2's), that connect to 3750's/2960's - We have a bunch of carrier connections(Trunk ports) coming into

the switches(client tails handed off as vlans) and also atm(into the 7200's) for dsl.

The 7200's are P/PE's running MPBGP/VRF's/MPLS/OSPF/Inet/Netflow - i.e they do all the L3....the switches are only L2

Couple of our pop's are pushing 450Mb+/sec aggregate traffic, and the G2's are getting up to 50% cpu on busy days(So need to look at upgrading)

Probably the "easiest" upgrade path is to replace the 7200's with ASR1000's, but I would like to also look at potentially going to a more traditional design.

Know it's a very complicated question, but is moving to 4500's/6500's as "core", with 2960's/3750's as access and using the 7200's for purely edge(Inet/LNS) duties a better approach?

Any feedback is greatly appreciated.

[johnelliot6]

Thanks Edison - The more I read up on the 6500/7600, the more expensive it is going to be to suit our requirements!

My original plan to go with the ASR1000 is looking like the better option.

Hmmm...Do I go 2 x asr1002's in each POP, or go a single 1006 with dual route processors....choices!

[Konstantin Dunaev]

Hi,

just a few comments, as I was considering a couple years ago also to get ASR1000 or c6500/7600:

if we compare the prices for linecards for c6500 and for c7600 you will find out that c6500 is much more cheaper, because  for c6500 they are "switched" modules and for 7600 they are "routers" modules. So if you don't need too many WAN interfaces you can just put a c6500 with switched modules for Ethernet customers nad a couple of c7200 for WAN customers.

ASR1000 needs SPA/SIP as well and they cost pretty  the same as for c7600.

But with ASR1002 you can't really get many ports and it will not allow you add them in the future. If you go for ASR then I'd suggest to get at least 1004.