[c-nsp] Router 6504E - SUP 720 3B XL

["Rolf Hanßen"]

Hi,

sorry, but 88% used does not mean you really have 12% you can use.
3 years ago we were at similar situation, one of our 3BXL had 92 or 93%
usage and restarted the bgp process because it was unable to allocate more
memory.
We thought to have a few more months and waited to long to replace it.
So 88% mean "disable one session" and not "add another one".

If you want to use 6500/7600, go for the Sup2T (XL was around 9k Euro -
before Brexit) + 4Gig memory.
You can still built a up to 80GBit throughput box with a great router port
amount per money if you use 6700 linecards with CFC (WS-X6748-GE-TX below
200Euro, WS-X6704-10GE below 500Euro) and can live with the risk that 1M
routes could become an issue in a few years.

kind regards
Rolf


> 15.7.2016, 17:13, Nick Hilliard wrote:
>> TCAM is fine for the time being, but RP RAM is definitely a problem on
>> this platform.  The RP has 1G of RAM, non-upgradable.  A DFZ will work
>> for the time being if you run 12.2SX.  If you run 15S, there's less
>> space and it will not run unless you disable inbound soft reconfig.  In
>> either case, it's not going to be viable in the long term.
>>
> Yes, with 15.X IOS you will be at 90% in memory usage. We have one box
> (15.1(2)SY4a IOS) with two full feeds and a lot of features enabled -
> the memory usage is 88%. There is still room for a third full BGP feed.
> I'm not concerned about this, since even with an empty config the memory
> usage is quite high. However, it's stable and doesn't vary much.
>
> But yeah, 6500 is not the best choice for the future.
>
> zzif
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