-----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] > Sent: 21 May 2007 21:05 > To: [EMAIL PROTECTED] > Cc: [email protected] > Subject: Re: [j-nsp] m7i performance > > > - With a RE (512Mb) and CFEB (128Mb), how many eBGP upstream sessions > > (each receiving full routes from provider) can a box take? > > Difficult to give an exact number. However, I would strongly recommend upgrading your RE-5.0 to the maximum amount of memory, i.e. 768 Mbyte. > I think at some point there is a CFEB RAM upgrade recommended too, but I guess the need for that will depend on the size of the actual forwarding table you are pushing down to FEB, rather than the number of different routes being selected from.
The other RE option to consider is the RE-800, if you can afford it. This gives more CPU grunt than the old RE-5.0, and also comes with 1.5GB of RAM by default. > > - From performance view, how much does a M10i differ from m7i? > > M7i is 3.2 Gbps full duplex for its 4 PIC slots, plus up to 1 Gbps full duplex for the FIC (onboard) slot. So up to 4.2 Gbps, plus whatever you can push through the builtin tunnel PIC. > > M10i is 6.4 Gbps full duplex for its 8 PIC slots. If you need a tunnel PIC, it counts against these 6.4 Gbps. > While this may be the theory, I'm not convinced of this in practice. The M7i has exactly the same CFEB board as the M10i, and the REs available are the same, so I think that the actual performance should be pretty similar. The difference, of course, is that in the M7i you can only ever occupy a maximum of 6 of the 8 available PIC slots. It is slightly annoying that when you pay to have the optional ASM module installed that Juniper chose to have this over-ride the built in tunnel PIC, where they could presumably have had it in addition to the tunnel PIC relatively easily. Though there aren't many applications for an M7i where you'd need more than 800Mbit/s of tunnel PIC capabilities, I'm sure there are ones where having 800Mbit/s of IPSEC capability and 800Mbit/s of tunnel PIC capacity would be helpful. The M10i's main advantage is its redundancy - there is a lot of peace of mind to be had from having 2 REs and 2 CFEBs available in critical systems. > > - One my boxes has 2 eBGP upstream sessions (full routes) and the > > memory utilization on RE is constantly around 95%. Is it normal? > > Juniper changed the way memory utilization was calculated, see > > http://marc2.theaimsgroup.com/?l=juniper-nsp&m=116448795729031&w=2 > > So RE memory utilization constantly around 95% is pretty normal. > Only, of course, on REs with a relatively limited amount of RAM. On an M320 or M120 RE (which come with 2GB or 4GB of RAM) the utilisation is still often only around 20%. > All this is MHO, and nothing to do with my employer, of course. Regards Michael ------------------------------------------------------------------------ ---- Michael Firth Video Communication Solutions BT Exact * +44 1473 645306 * +44 1473 641333 * [EMAIL PROTECTED] ------------------------------------------------------------------------ ---- BT Exact is a trademark of British Telecommunications plc Registered office: 81 Newgate Street London EC1A 7AJ Registered in England no. 1800000 This electronic message contains information from British Telecommunications plc which may be privileged or confidential. The information is intended to be for the use of the individual(s) or entity named above. If you are not the intended recipient be aware that any disclosure, copying, distribution or use of the contents of this information is prohibited. If you have received this electronic message in error, please notify us by telephone or email (to the numbers or address above) immediately. _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp
