Media5 Mediatrix 4104, Reference Manual

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Vendor and Site Specific DHCP Options Reference Manual (SIP Version)
Mediatrix 4104 157
The DHCP server adds the proper code and length in the packet it sends out.
Example
The following example shows how to enter the Syslog (code 110) IP address 192.168.0.10 (with the default
port used) and the same address at port 2545 in hexadecimal format.
Figure 72: Example – Short Address String
Figure 73: Example – Long Address String
Entering FQDNs
The FQDN address layout is a Media5 proprietary extension to the IP address layout. This format allows the
configuration of an IP address in binary format (with or without port) or a FQDN in string format (with or without
port) in the same option. The method to decode the information is based on the length of the option: a length
of 4 or 6 is decoded as an IP address in binary format and a length higher than 6 is decoded as a FQDN in
string format.
The IP address in binary format (with and without port) is explained in section “Entering IP Addresses” on
page 156 .
The FQDN in string format consists of an array of characters representing the FQDN address.
Figure 74: FQDN String Format (without a port number)
You can specify a port by adding the port number in string format after a ':' at the end or the FQDN.
Figure 75: FQDN String Format (without a port number)
The space or null (ASCII code 0) character can be used as padding at the end of the string to have a length
higher than 6, since all spaces and nulls are ignored. Note that an IP address can be defined in string format.
0x6E 0x4 0xC0 0xA8 0x0 0xA
Vendor or
Size IP Address
Site Specific
Code
0x6E 0x6 0xC0 0xA8 0x0 0xA 0x9 0xF1
Vendor or
Size IP Address
Port
Site Specific
Code
Code Len (7 to
n) FQDN
char 1 FQDN
char 1 ... FQDN
char n
Code Len (7
to n) FQDN
char 1 FQDN
char 1 ... FQDN
char n ":"
(0x3A) Port
char 1 ... Port
char y