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WAN Setup

Posted on 1997-11-21
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Last Modified: 2013-12-23
We have 10 branches including the main headquarters of a bank that we want to provide direct data communications links for. The data links will be multipoint links. We currently have a Sun Enterprise 3000 at Headquarters and
Sun sparc4's for the branches. They are running Solaris 2.5. We have to order routers for each branch. We want to setup organizational e-mail using Solaris' mail. Does any of you experts have any experience setting up and managing a WAN in a banking environment? I would appreciate some 'how to setup' information from you experts.
Thanks in advance for your time.

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Question by:denmarkw
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Expert Comment

by:dhughes111797
ID: 1583001
No experience, but I do have some suggestions for things to
think about. - What kind of bandwidth do you require to your
remote sites (56K, ISDN 128, T1, higher)
How will you be doing backups and recovery?
How will you coordinate distribution of software?
How will you coordinate accounts?
I think Cisco 2500 series routers would fit very well into
this environment (at each site). You would then have something a little bit bigger at your central location (say at 7500?). Or, if bandwidth requirements are steep, you could do it all with ISDN and save a butload of money.
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Author Comment

by:denmarkw
ID: 1583002
Does anybody else have experience setting up and administering
Solaris mail in a WAN environment(branches connected by routers)?
I want to set up communications using PPP over X.25 or DSU/CSU.
We don't have ISDN service in Belize. Our available communications technology include Frame Relay, T1, and X.25.
We want to connect all the branches via an on-line link so that
a transaction would be posted from one branch to the next without
the need to dial-up first.
If we use a Frame Relay network with an ATM switch provided by our only telephone service, do we need DSU/CSU's in addition to
routers at each of our branches?
Please feel free to comment.

Thanks for your time Denmark
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Accepted Solution

by:
pvenezia earned 100 total points
ID: 1583003
You don't want to use X.25... believe me :)

The best solution is frame relay. You'll need a WAN provider, someone like AT&T, Worldcomm, UUnet, etc. I would suggest calling a rep from each and getting competing bids. Make sure they know what other companies you're also dealing with, as it tends to make their bids lower.

Hardware? Cisco 2501/2514's would do the trick nicely, if the WAN you're dealing with is in the 256k/384k range. If this situation will be dealing with overseas links, then a larger provider will definitely be best. AT&T is good at this sort of thing.

You will need a router and CSU/DSU at each location. It is possible to get newer Cisco products, like the 25xx routers that integrate CSU's into the same box. Handy, but not modular.

Solaris mail over WAN? It's just like LAN, if you're using TCP/IP. You'll have to setup either a local mail server, and have the remote sites POP/IMAP from that server, or set up aliases to push mail from a central location to individual servers at each site. It's up to you. The routers/WAN will be transparent to the mail.

I agree that a central router is a good idea, but it need not be a $60,000 router. You would probably do fine with a 7010 (used/refurbished) that will handle that load without breaking a sweat. You can find these relatively cheap, but make sure you get one with a 64MB RAM-capable RP card.

Another possible solution is DSL (HDSL/ADSL) But it would be amazing if the local telco will sell it to you. It depends on tariffs, etc, that change periodically. If you can do this, however, it's possible to get up to 9 megabit (!!) across a straight-copper DSL line by spending ~$1,500 at either end...
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Author Comment

by:denmarkw
ID: 1583004
Thanks for your comments!

Any further comments and recommendations would
be greatly appreciated!

Regards!
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