What'different between Dialer string and Dialer map?

[shan-cao]

Hi,:),I have a little question that is what's different between dialre string and dialer map?

I can't understand these well. Please give me a help.Thanks

Sincerely

[ankurbhasin]

Hi Shan,

Dialer string is just used to specify the number to be dialed.

Dialer map is used to bind a dialer interface which is a logical interface to physical interface. By this I mean for suppose you have many physical interface which you want to work in a same way you can create a logical interface like dialer interface and can bind that single dialer interface with different physical interface.

HTH

Ankur

[shan-cao]

Hi ankurbhasin

Thanks for your response.:),But I think the dialer pool-member is used to bind a dialer interface to physical interface. dilaer string is used to the number to be dialed. if I have s isdn peer with spid1 2222, so I configure the dialer as following two ways:

1) dialer string 2222

2) dialre map ip x.x.x.x name xx broadcast

what's different between above two configuration ways?Thanks a lot.

Sincerely

[ankurbhasin]

Hi Shan,

So sorry for wrong statement.

Actually using dialer string statement you can specify only one number.

To specify multiple strings we can use the dialer map command.

In general, you include a dialer string or dialer map command if you intend to use a specific interface to initiate a DDR call.

Summarising with an example

If there's only one phone number, you can specify it with the dialer string command:

interface serial 0

dialer string 5551212

When there's more than one next hop router, the router needs a phone book:

interface serial 0

dialer map IP 144.254.50.1 name nextHopper 5551212

This says that the IP address 144.254.50.1 is reached at phone number 5551212. The name part is optional. The word broadcast may be added to the dialer map, if IP broadcasts need to cause dialing.

HTH

Ankur

[Richard Burts]

I would take a slightly different approach from Ankur in answering this question. I would say that dialer string can specify only one thing about the outbound call and that is what number to dial. Using dialer map you can specify a number of different parameters about the outbound call including the IP address of the device to be dialed, the number to dial, whether or not to treat this connection as boradcast capable, the name of the remote device to be used for authentication.

HTH

Rick