Firewall Wizards mailing list archives
Re: Info Request: Looking for alternatives in HA/Load balancing firewallsthat are also scalable and modular. . .
From: David Lang <dlang () digitalinsight com>
Date: Wed, 12 Apr 2006 14:51:35 -0700 (PDT)
On Mon, 10 Apr 2006, Devdas Bhagat wrote:
On 07/04/06 16:52 -0700, David Lang wrote: <snip>5TB/day is a sustained 60MB/sec (1 1/2 DS-3's or so), given that you have a lot of peaks it's reasonable to say that your peak traffic is 2-3x that value. you are still talking about ~200Mb/sec of traffic.Try 20-30x. 2MB is a _large_ email. I assume that the OP is already optimising by recipient domain(s) and hosts with multi-recipient messages. If the OP is lucky enough that the load can be distributed evenly, that would be a fairly rare case. Typical bulk mail traffic goes as one injection to a few thousand recipients, and then it fans out. Your sending speed is typically limited by the speed at which the remote host can accept mail, or by the pipe between the two of you. However, with multiple parallel messages, the choke is generally the network itself.this is comfortably handled with a P-III intel platform (a Nokia 740 appliance is this amount of power) Sun has a checkpoint appliance that is Opteron based (defaults to 1.4GHz processors, you can upgrade it) for about $30K. this is a very moderate box by today's standard, but would handle the type of bandwidth requirements you are talking about triviallyWe have multiple OC's coming in, bandwidth isn't the immediate worry, it's throughput. . .again I need to ask for definitions. the best overall throughput is generally achieved by spreading the load evenly and running things at max capacity all the time. bandwidth requirements better represent your peak requirements, but I think what you are looking for is responsivness (or low latency). Even with that you should keep in mind that Internet useFor mail delivery, the issue is throughput. Latencies are generally counted in minutes (or hours). Think B52 full of DVDs.
but if you can accept latencies of hours then you have a lot of leeway to spread your peaks out and your peak bandwidth can be far closer to your average bandwidth, so your statement that the peak is 20-30x the average doesn't sound reasonable.
what am I missing here? David Lang -- There are two ways of constructing a software design. One way is to make it so simple that there are obviously no deficiencies. And the other way is to make it so complicated that there are no obvious deficiencies. -- C.A.R. Hoare _______________________________________________ firewall-wizards mailing list firewall-wizards () honor icsalabs com http://honor.icsalabs.com/mailman/listinfo/firewall-wizards
Current thread:
- RE: Info Request: Looking for alternatives in HA/Load balancingfirewalls that are also scalable and modular. . ., (continued)
- RE: Info Request: Looking for alternatives in HA/Load balancingfirewalls that are also scalable and modular. . . David Lang (Apr 13)
- RE: Info Request: Looking for alternatives in HA/Load balancingfirewalls that are also scalable and modular. . . Paul Melson (Apr 13)
- Re: Info Request: Looking for alternatives in HA/Load balancingfirewalls that are also scalable and modular. . . Darren Reed (Apr 23)
- Re: Info Request: Looking for alternatives in HA/Load balancingfirewalls that are also scalable and modular. . . Jan Tietze (Apr 13)
- RE: Info Request: Looking for alternatives in HA/Load balancing firewallsthat are also scalable and modular. . . Keith A. Glass (Apr 09)
- RE: Info Request: Looking for alternatives in HA/Load balancing firewallsthat are also scalable and modular. . . David Lang (Apr 09)
- Re: Info Request: Looking for alternatives in HA/Load balancing firewallsthat are also scalable and modular. . . Oliver Humpage (Apr 12)
- Re: Info Request: Looking for alternatives in HA/Load balancing firewallsthat are also scalable and modular. . . David Lang (Apr 13)
- Re: Info Request: Looking for alternatives in HA/Load balancing firewallsthat are also scalable and modular. . . Devdas Bhagat (Apr 12)
- Re: Info Request: Looking for alternatives in HA/Load balancing firewallsthat are also scalable and modular. . . David Lang (Apr 13)
- Re: Info Request: Looking for alternatives in HA/Load balancing firewallsthat are also scalable and modular. . . Devdas Bhagat (Apr 13)