Re: Pentium IV router vs. Cisco router
Am 2006-02-24 20:15:26, schrieb Pablo:
> I have 300 CMs, (Cable Modems) average pack: 512kbps each one,
> behind a border router (CMs->CMTS->border router) with this CPU:
I am running currently two Lucent Stinger IP DSLAM with each 24 ports
of 8 MBit (100 Mbit per IP-DSLAm max).
The Internet connection is a Dual E3 (=68 MBit) and the Router is a
AsusTek A7V600-X with a Sempron 2200+ and 256 MByte of memory. Using
an Intel 1000MT as eth0 (internal network) amd the five 3Com 3c905TX
for the two IP-DSLAM'S (eth1 and eth2), publicnet (eth3) and private-
net (eth4) plus one (eth5) for my Proxim Tsunami MP.11a WaveLAN with
I have nearly a permenent traffic of 40 MBit (because my 150 customers
do not use more)...
> model name : Intel(R) Pentium(R) 4 CPU 3.20GHz
What do you want to do with this killer machine?
If it hast PCI-Express or PCI-X it can handle multiple
STM-4 (each 622 Mbit)
> ? eth0 39488
> 39488 0 0
> 5089.20 kbits/sec ?
> ? eth2 35964
> 35964 0 0
> 4981.80 kbits/sec ?
I can handle this traffic with a 486dx75 with 16 MByte of memory
> top - 18:13:25 up 22 days, 11:07, 1 user, load average: 0.11, 0.12, 0.05
> Tasks: 40 total, 2 running, 38 sleeping, 0 stopped, 0 zombie
> Cpu(s): 0.0% us, 0.0% sy, 0.0% ni, 96.7% id, 0.0% wa, 0.0% hi, 3.3% si
Again: Why do you use such killer machine for this traffic?
Are you TOO rich?
> So, the question is, could this server running with: Linux border_router
> 2.6.8-2-386 #1 Tue Aug 16 12:46:35 UTC 2005 i686 GNU/Linux
> be to small to handle the load of our net? I think it isn't but some others
> wants a CISCO 3845 (me too ;·) but that isn't the question this time)
The CPU with PCI-Express or PCI-X Slots can handle some GBit of
traffic... Exactly, this CPU can handle at least two 4-Port Intel
Ether Pro 1000MT which mean 8 GBit of traffic.
The Cisco would be Overkill.
Which kind of internet connection or backbone do you have?
> I don't know how to correct measure the load:.. and the requirements :·(
> derived from them, any ideas?
300 Cable Modems of each 512 kBit will give you a maximum of 155 MBit
which fits a STM-1 and you can guaranty the speed for your customers.
Because the paralel load on all 300 modems will never the maximum,
(20-30% is an experience of me), you need only a Backbone E3 (34 MBit),
an T3 (45 MBit) or a Dual-Backbone of it.
Tamay Dogan Network
Debian GNU/Linux Consultant
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