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Frame relay over satellite

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by xavi792002

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Hi all

i have project consists from main office and nine remote sites will be connect through satellite links i am thinking to use Frame relay Hub ans spoke i will use Cisco routers, but i have problem , bcz i am using Satellite link; at the main office there will be one modem for transmit from the main office to remote site with big carrier(9 Mhz) and plus nine modems(1 Mhz) for the receiving from nine sites.
and in each remote site there will be only one modem but the problem how can i configure all 10 modems (1 transmit +9 receive )at the main office in the Cisco router in the main office
to do the frame relay network

thanks in advance

9 replies

by xavi792002

i think Dynamips will not help bcz i have to add modems and these nine modems only for receive at the hub and one for transmit
i wish anybody can help me who has experience in satellite communication

by michael kassner

Still I've done a few installs. I'm somewhat confused as to why you are using 9 receivers? Can you explain that in more detail, please?

by xavi792002

thanks Micheal for yr interesting
let me clear something
i will use star topology that i mean in the HQ or the hub i will use one big carrier for all the nine sites in certain frequency (F1)
and the hub will receive from the nine remote sites at different frequencies (F2,f3,f4,f5,f6,f7,f8,f9,f10) to demodulate these carriers i need nine modems , these modems will connect to the router in the hub ; these modems use interface called smart serial. in the remote site i have only one modem this will be used for transmit and receive for certain freq. frequency (F1 for the receive and one of the these freqs. f2,f3,f4,f5,f6,f7,f8,f9,f10) for transmit

by jdclyde

First, if you have a one-to-one shot, the FIRST thing to do is turn on header compression. As there is only one place to go, you can shave off a LOT of networking overhead with that one step.

Thing to watch out for, is keep an eye on your FECN/BECN. If things lag, but you are not dropping packets, it is because the FECN/BECN are telling your routers to throttle back how fast they are sending.

http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci787381,00.html

This can make it hard to find WHY things are running slow even with QoS set.

Hope you are not planning on doing VoIP or VPN.

by xavi792002

actually we are planing to use this network for data like oracle , mail and web traffic
as backup for terrestrial network

by the 'g-man.'

But they must send some data back, even NAK or ACK's. If not then how on earth do you expect to use then for web browsing / e-mail?

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