Sierra Wireless DART 200 CDPD Modem manual ∙ ATP+51348954

DART 200 CDPD Modem User’s Guide 4 Broadcast and Multicast Operation

Multicast setup

For multicast set up the DART 200 with a multicast IP Address and an associated Group Multicast Identifier (GMID), in addition to the normal IP Address, as follows:

1.Enter the Multicast NEI (like any other IP Address) by using the AT^A command.

2.Select the NEI for multicast use with the AT\S+n command, where n is the slot number in the DART 200’s IP Address list.

3.Define the GMID, use the AT^G command that assigns a multicast group ID to the slot containing the Multicast NEI, for example:

∙ AT^P+51348954 Must be in Service Provider mode

∙AT^A198.225.189.35/1 Enter multicast IP Address in slot 1

∙	AT^G12/1	Set GMID for slot 1 to 12
∙	AT\S+1	Select IP Address in slot 1 for
		multicast use

4.Verify the set up of your Multicast NEI with an AT\S? command; it shows the CDPD modem’s NEI status. The screen appears as shown in Figure 4-1:

Figure 4-1. Checking NEI status with AT\S?

AT\S?

SLIP = IP ADDRESS 001.001.001.002

MAS = IP ADDRESS 198.225.189.031

*NEI 0 = IP ADDRESS 198.225.189.031 GMID 0000C + NEI 1 = IP ADRESS 198.225.189.035 GMID 00012

SPI 0 = 00012

SPNI 0 = 00035

WASI 0 = 00001

OK

*- Indicates which slot contains the active point-to-point NEI (IP Address) + - Indicates the multicast NEI selected.

Both NEIs must be registered concurrently; there is no command to register a multicast NEI by itself. Define and select the multicast NEI before registering the point-to-point NEI. The GMID field in Figure 4-1 is only applicable to the multicast NEIs.

The DART 200 can have multiple Multicast NEIs defined, but can only have one active at a time. The multicast designation for a particular slot in the NEI table can be deactivated by an AT\S-ncommand, (where n is the slot number), and a different one activated by an AT\S+n command.

PN1197-00 Revision 1.0 4-3