Medias Mediatrix 1204, Справочное руководство

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Chapter 8 - IP Address and Network Configuration Error Handling
134 Mediatrix 1204
Option 250 (site specific option) contains the hexadecimal sequence 0xA0x30x20xC80x400.
Error Handling
In the event of a network or server failure, this section describes the application behaviour and/or replacement
values to use.
DHCP Server Failures
If the Mediatrix 1204 cannot contact the DHCP server, it performs one of the following actions:
1. Retries contacting the DHCP server until it answers. The Mediatrix 1204 does not restart.
2. Uses the replacement value from Table 83 for all variables that depend on the DHCP.
This assumes that the Mediatrix 1204 is set to get its IP information via a DHCP server.
If the Mediatrix 1204 is configured to request some DHCP options but does not require an IP address from the
server, the amount of time it will wait for an answer before proceeding further is configurable as defined in
“Appendix - DHCP Options Waiting Time” on page 128 .
Vendor/Site Specific Option Missing
If a vendor specific or site specific option is missing from the DHCP server answer, the Mediatrix 1204 uses
the replacement value from
Table 83 for each variable that depends on missing vendor/site specific options.
DNS Failures
If the DNS cannot be contacted, the Mediatrix 1204 performs the following steps:
1. The Mediatrix 1204 sends a first request to the primary DNS server.
2. If the DNS server cannot be contacted within two seconds, the Mediatrix 1204 sends a request to
the secondary DNS server.
3. If the secondary DNS server cannot be contacted, the Mediatrix 1204 uses the replacement value
from
Table 83 for all variables that depend on the DNS.
Table 82: Hexadecimal Sequence - Option 250
Hexadecimal Part Corresponding Information
0xA0x30x20xC8 IP address 10.3.2.200
0x400 port 1024
Table 83: Replacement Values for Error Recovery
Type Variable Replacement value
IP address (All variables of that type) 0.0.0.0
String (All variables of that type) “”