E.5.4 protocol commands and queries – Comtech EF Data CDM-570 User Manual

Page 406

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CDM-570/570L Satellite Modem with Optional IP Module

Revision 12

Appendix E

MN/CDM570L.IOM

E–20

E.5.4 Protocol Commands and Queries

Parameter

Type

Command

(Instruction

Code and

Qualifier)

Arguments for

Command or

Response to

Query

Description of Arguments

Response to

Command

Query

(Instruction Code

and Qualifier)

Response to

Query

DHCP Relay IP
Address

DRA=

15 bytes,
numerical

Command or Query.
Used to set the IP address of the DHCP Server, in the format:
xxx.xxx.xxx.xxx, where:
xxx.xxx.xxx.xxx is the IP address
Example: <1/DRA=010.006.030.001
Returns >0001/DRA=0.0.0.0 when not configured.

DRA =
DRA!

DRA?

DRA =
xxx.xxx.xxx.xxx
(see description of
arguments)

Static Arp table

ARP=

256 bytes
characters

Command or Query.
ARP Entry in format xxx.xxx.xxx.xxx|mm:mm:mm:mm:mm:mm
Where xxx.xxx.xxx.xxx = IP address.
mm:mm:mm:mm:mm:mm. = MAC Address.
Note: Duplicate IP addresses are not allowed. They must also be locally attached
(on the same subnet as the Ethernet interface). Using a different index with
existing IP address may modify the existing ARP entry, rather than creating new
one.
Example: <1/arp[1]=010.020.030.040|00:11:ab:33:44:66
Returns >0001/ARP! When there is no ARP entry.

ARP =
ARP!

ARP[1..256]?

ARP=x [1..256]
(see description of
arguments)

Number of ARP
entries

N/A

4 bytes, numerical Query only.

Returns the number of static arp entries.
Note: This command should be issued whenever a new ARP Entry is
added/deleted.

ARN =
ARN!

ARN?

ARN=nnnn
(see description of
arguments)

Delete an ARP
entry

ARD=

ARD=xxx.xxx.xxx.
xxx

Command only.
Delete the ARP entry associated with the specified IP Address.
xxx.xxx.xxx.xxx IP address of ARP entry to delete.
Example: <1/ARD=192.168.001.100

ARD =
ARD!

N/A

ARD=xxx.xxx.xxx.
xxx
(see description of
arguments)

IGMP Server:
IGMP Query
Period

IGQ=

IGQ=xxx
Where xxx is 1 to
600

Command or Query.
Set the IGMP Query period in seconds while modem acting as IGMP Server.

IGQ=
IGQ!

IGQ?

IGQ=xxx
xxx – value of 1 to
600.

IGMP Server:
IGMP Max Resp.
Time

IMR=

IMR=xxx
Where xxx is value
of 1 to 598

Command or Query.
Set the Maximum response time for the IGMP Query in seconds. Should always be
2 less than query period. The range is 1 to (IGQ – 2). If IGQ is at 30, then IMR can
be set from 1 through 28.

IMR=
IMR!

IMR?

IMR=xxx

xxx - value of 1 to
598.

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