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Webcast-Catalyst9k
New Member

frame-relay :subinterfaces and channelized E1

I want to built a network based on 'Hub and Spoke' network design., the main office has 3661 with CE1 Module,i have 15 branch offices, so i used CE1,each

branch office have 128K access speed, the WAN LINK

is frame-relay.

but some one said : using subinterfaces can do it,

so i can order more cheap module, for example:

the module with WIC-1T.

now i am wondering:

1 when (What condition) should i use CE1?

2 the two solution above can do the job well ?

3 dose CE1 work in frame-relay?

thank you very much

4 REPLIES
New Member

Re: frame-relay :subinterfaces and channelized E1

Things to consider

1) the CE1 interface is usually ISDN, find out from the TELCO what service they are providing.

eg 2MB frame relay, or 30 channel ISDN.

if it is standard Frame then you will need a Wic-1T.

2) what service is being provided to the remote branches, again is it ISDN or Frame relay?

3) what routers do you have at the remote sites?

New Member

Re: frame-relay :subinterfaces and channelized E1

i understand that:CE1 can be used for TDM network or ISDN ,right ?, if ISDN, i have 3 branches, so i can supply 640KBPS for each branch? if so what module my branch router(2621) use? what cable for it?

another question:

if my main office service is frame relay, i use the

WIC-1T,and use subinterface ,but my branches is ISDN

service, How can i do ?

New Member

Re: frame-relay :subinterfaces and channelized E1

if each branch is going to be 640k, then you would need an ISDN primary interface ..

What services are being provided by the Telco?

tell what you have at each location.eg bandwidth etc

once you know what is supplied we can then work out what interfaces are required.

New Member

Re: frame-relay :subinterfaces and channelized E1

scenario 1

my main office

hub router:3661

teleco service:Frame-relay

bandwidth 2M

my branche office 3 sites

router 2621

teleco servive: ISDN

i want make Hub spoke network

each site bandwidth: 640k

Can you design this network according to different teleco services.and please show me the modules for

each router.

scenario 2

my main office

hub router:3661

teleco service:ISDN

bandwidth 2M

my branche office 3 sites

router 2621

teleco servive: ISDN

i want make Hub spoke network

each site bandwidth: 640k

Can you design this network according to SAME teleco services.and please show me the modules for

each router.

THANK YOU IN ADVANCE

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