Re: [opensuse] [hope not OT] asking for office network optimize suggestions

[Zhang Weiwu]

在 2007-07-29日的 09:49 +0800，Zhang Weiwu写道：

> As demonstrated in the attached graph (made with dia)


I am surprised to find dia produce very clear png image at much much
smaller size if choose to export as "Pixbuf PNG" format. The file can be
shrinked even further 50% by open with GIMP and save as indexed PNG.

The last illustration I attached is 60KB, this one at same size is 10KB.
A 83% reduction of file size. Very useful tip for those who need it,
especially useful for sending illustration image as attachement to big
mailing list like opensuse. IMHO anything bigger then 30KB shouldn't be
sent to mailling lists.


<>

Re: [opensuse] [hope not OT] asking for office network optimize suggestions

[Dave Howorth]

Zhang Weiwu wrote:
> [office A] <-almost impossible to connect-> [office C]
> [office B] <-almost impossible to connect-> [office C]
> [office B] <-   very fast and realiable  -> [office A]
> [office B] <-   very fast and realiable  -> [internet server "bossdog"]
> [office C] <-   very fast and realiable  -> [internet server "bossdog"]
> [office A] <-almost impossible to connect-> [internet server "bossdog"]

I think you can solve this just by adding explict routes and gateways.
It's probably also possible to use VPNs but I have no experience with them.

I think you need to tell A (hatch) that all traffic for C or bossdog
must be sent via gateway B (renaissance), tell C (wosbj) that all
traffic for A or B must be sent via gateway bossdog, tell B that all
traffic for C must be sent via gateway bossdog and tell bossdog that all
traffic for A must be sent via gateway B. Then all traffic should use a
good path.

I'm sure somebody with more experience will propose something better :)

Cheers, Dave
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Re: [opensuse] [hope not OT] asking for office network optimize suggestions

[Zhang Weiwu]

在 2007-07-30一的 14:37 +0100，Dave Howorth写道：
> Zhang Weiwu wrote:
> > [office A] <-almost impossible to connect-> [office C]
> > [office B] <-almost impossible to connect-> [office C]
> > [office B] <-   very fast and realiable  -> [office A]
> > [office B] <-   very fast and realiable  -> [internet server "bossdog"]
> > [office C] <-   very fast and realiable  -> [internet server "bossdog"]
> > [office A] <-almost impossible to connect-> [internet server "bossdog"]
> 
> I think you can solve this just by adding explict routes and gateways.
> It's probably also possible to use VPNs but I have no experience with them.
> 
> I think you need to tell A (hatch) that all traffic for C or bossdog
> must be sent via gateway B (renaissance), tell C (wosbj) that all
> traffic for A or B must be sent via gateway bossdog, tell B that all
> traffic for C must be sent via gateway bossdog and tell bossdog that all
> traffic for A must be sent via gateway B. Then all traffic should use a
> good path.

How can this be possible? I mean probably I am stupid but this is not
what I learnt for what route is supposed to do.
e.g. if I specify all traffict from hatch (125.77.224.26) to bossdog
(211.157.108.128) should go through renaissance (125.77.226.195), this
wouldn't work: there is no direct (directy = without route) connection
between hatch and renaissance because hatch and renaissance are not in
one sub-net.

I think router can only route something to the next gateway that have
direct connection. If hatch needs several routes to reach renaissance,
how can it route packets through renaissance?

> 
> I'm sure somebody with more experience will propose something better :)
> 
> Cheers, Dave
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