[nsp] Size of BGP Table from ISP-X

[Peter Burggasser]

Wow great and easy. How many kb I have to calculate for each entry? That
I can see the memory requirements on my router.

Thanks for your help

Peter

-----Ursprungliche Nachricht-----
Von: Ryan O'Connell [mailto:ryan-nsp at complicity.co.uk] 
Gesendet: Sonntag, 23. Februar 2003 18:51
An: Peter Burggasser; cisco-nsp at puck.nether.net
Betreff: Re: [nsp] Size of BGP Table from ISP-X


On Sun, 23 Feb 2003 18:41:20 +0100 Peter Burggasser
<p.burggasser at uta1002.at> wrote:
> My question is, where i can get information how huge a BGP talbe is if

> i plan BGP routing. Of couse it depends to wich ISP you are connected.

> But is there anywhere a platform where I can get informed? (Like LIR 
> for IP and ASN)

Ask for a "BGP Summary" from any looking glass and look for the higest
PfxRcd (Prefixes Received) numbers. E.g.:

http://www.linx.net/tools/stats/looking-glass.thtml?run=true&site=LINX-T
ransit&query_type=+BGP+Summary&address=&Submit=Submit&.cgifields=query_t
ype

BGP router identifier 195.66.227.254, local AS number 5459 [snip]
 Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down
State/PfxRcd
[snip]
 195.66.248.10   4   702 10749979  604899 56276301    0    0 4w1d
118116
 195.66.248.18   4  5378 6693858  403755 56276350    0    0 4w1d
118154
 195.66.248.26   4  2529 82684567  372887 56276346    0    0 4w1d
119017
 195.66.248.34   4  5413 11105551  403902 56276301    0    0 19w3d
118590
[snip]

So, currently around 120,000 prefixes (routes) in the global routing
table for a full feed.

-- 
      Ryan O'Connell
Mail: ryan at complicity.co.uk
  CV: http://www.complicity.co.uk/ryancv.pdf
      CCIE #8174