User's Manual

Chapter 16 ALG
NXC CLI Reference Guide
112
16.2 ALG Commands
The following table lists the alg commands. You must use the configure terminal
command to enter the configuration mode before you can use these commands.
16.3 ALG Commands Example
The following example turns on pass through for SIP and turns it off for H.323.
Table 50 alg Commands
COMMAND DESCRIPTION
[no] alg sip [inactivity-timeout
| signal-port <1025..65535> |
signal-extra-port <1025..65535> |
media-timeout <1..86400> |
signal-timeout <1..86400> |
transformation]
Turns on or configures the ALG.
Use inactivity-timeout to have the NXC apply SIP media and
signaling inactivity time out limits.
Use signal-port with a listening port number (1025 to 65535) if
you are using SIP on a port other than UDP 5060.
Use signal-extra-port with a listening port number (1025 to
65535) if you are also using SIP on an additional UDP port number,
enter it here.
Use media-timeout and a number of seconds (1~86400) for how
long to allow a voice session to remain idle (without voice traffic)
before dropping it.
Use signal-timeout and a number of seconds (1~86400) for how
long to allow a SIP signaling session to remain idle (without SIP
packets) before dropping it.
Use transformation to have the NXC modify IP addresses and
port numbers embedded in the SIP data payload. You do not need to
use this if you have a SIP device or server that will modify IP
addresses and port numbers embedded in the SIP data payload.
The no command turns off the SIP ALG or removes the settings that
you specify.
[no] alg <h323 | ftp> [signal-
port <1025..65535> | signal-
extra-port <1025..65535> |
transformation]
Turns on or configures the H.323 or FTP ALG.
Use signal-port with a listening port number (1025 to 65535) if
you are using H.323 on a TCP port other than 1720 or FTP on a TCP
port other than 21.
Use signal-extra-port with a listening port number (1025 to
65535) if you are also using H.323 or FTP on an additional TCP port
number, enter it here.
Use transformation to have the NXC modify IP addresses and
port numbers embedded in the H.323 or FTP data payload. You do
not need to use this if you have an H.323 or FTP device or server
that will modify IP addresses and port numbers embedded in the
H.323 or FTP data payload.
The no command turns off the H.323 or FTP ALG or removes the
settings that you specify.
[no] alg sip defaultport
<1..65535>
Adds (or removes) a custom UDP port number for SIP traffic.
show alg <sip | h323 | ftp> Displays the specified ALG’s configuration.
Router# configure terminal
Router(config)# alg sip
Router(config)# no alg h323