[j-nsp] Which Router

[Justin Sharp]

Lee Hetherington wrote:
> Hi List,
>
> Forgive me if I am asking stupid questions, but I am new to BGP.
>
> We are looking to empower our networks with BGP.  We have 3 pops and 3 different providers.  Currently we have various staticly routed connections, which is bad for a hosting co.
>
> POP A:  100Meg to Abovenet and 1000Meg to A smaller uk isp
> POP B:   100Meg to Abovenet and 1000Meg to A smaller uk isp
> Corp HQ:  10meg to POP A and 1x 2meg to Telia and 1x 2meg to Telstra
>
> We have a peak at Christmas of around 60mbits/sec across all links.
>
> I am looking at the Juniper J series of routers, as our requirements at the moment are pretty small.  Speaking to my hardware vendors has not filled me with confidence and they do not seem to know what i need in terms of the routers.  Our switches are all already speaking OSPF etc.
>
> In each location we will have 3 bgp sessions this I know.  2x eBgp and 1x iBgp.  
I'm not sure how you are calculating the number of sessions required, 
keep in mind that your iBGP peers need to be full meshed unless you are 
running route reflection (which is an separate license in the 2350 as is 
my understanding).
> Will a J2320 with 1Gb Ram be enough to hold the routing tables required and run?  Since we take full transit from all ISPs I am guessing this is going to be ok, but will not allow much growth.  My suggestion internally for kit would be the J4350 with 1Gb Ram to start, then upgrading to 2Gb in the future as we perhaps take transits from others or peer publically.
>
>   
As for router size, if you are taking only default or customer routes, J 
series might be fine. Our sales engineer recommends the J6350 at a 
minimum for full routes, and really suggests that we be at the M series 
(M7i, M10i for in chassis redundancy).

YMMV, IMHO, etc etc..


--Justin