Avaya Media Processing Server Series System (Software Release 2.1) Manual de usuario descargar pdf (Pagina 238)

Avaya Media Processing Server Series System Reference Manual

Page 238 # P0602477 Ver: 3.1.11

Monitoring Host Connections

If the event of a host process failure, the kernel on the host machine notifies VTCPD,

which in turn sends a hostdown condition to applications. However, VTCPD is not

notified if the entire host machine crashes or if the LAN connection is broken. To

detect this situation, VTCPD should query the host periodically with a ping

command. If a reply is not received in a specified amount of time, VTCPD then

determines that the host is down.

vtcpd -T <timeout>[:<ping-len>] -h len:<str>

Args: -T <timeout>

[:<ping-sec>]

Specifies that a ping message is to be sent to the

host every ping-seconds. (The default is 1.) If a

reply is not received within timeout number of

seconds, the host is deemed to be down.

-h len:<str> Specifies the format of the ping message. For

message formats using delimiters or length

headers (see Message Format on page 227) the

length of the ping message may be equal to zero

(in which case, only the header or delimiter is sent

to the host. The str option is ignored). For fixed-

length format, the length of the ping message

cannot be zero, but may be smaller than the length

of the message specified by the -f option. If str

is not specified, the ping message is filled with

ASCII '0' (e.g., -h4, -h4:0 and

-h4:0000 are equivalent). To specify an

unprintable character, the hexadecimal

representation (0xXX) should be used.

Examples: vtcpd -T 30:10 -h 4:0x00

Generates a ping message every 10 seconds with a total timeout of 30

seconds. The message consists of four binary zeroes.

vtcpd -T 20:5 -h 4:A0x410x42B

Generates a ping message every 5 seconds with a total timeout of 20

seconds. The message is the string "AABB".

1 2 ... 233 234 235 236 237 238 239 240 241 242 243 ... 305 306

Sin comentarios

Avaya Media Processing Server Series System (Software Release 2.1) Manual de usuario Pagina 238