Speedlimit is a feature that allows IPRTR to reduce the rate of its outgoing datagrams on a specific IP resource. Main usage is to reduce speed to safe values in presence of VOICE packets, while leaving full speed to data transfers when voice is not present.
The speedlimit can be activated setting the
OUTSPL
parameter to YES
in the IP
resources. The maximum speed is set in the OUTSP
parameter. Generally this parameter must be set to a value slightly lower
than the maximum speed in upload of the ADSL/HDSL line (e.g.: if the ADSL
line has a maximum speed of 256 Kbit/s the OUTSP
parameter must be set to 240
).
Enter into the Abilis control-program or open the configuration file with the Console configurator and type the following commands.
s p ip-3 outspl:yes outsp:240 | Activate the Output Speedlimit and configure the speed limitation value. |
s p iprtr acl:yes cos:enabled cosbalance:yes | Configure the Access List activation , enable the Class-Of-Service management and the Class-Of-Service Balancing. |
a ipacl pr:0 type:permit ipcos:high tos-i:*-d prot:udp sres:int sa:* da:* spo:* dpo:* | Add the standard IPACL that assigns high priority to voice packets. |
save conf | Save the configuration. |
On a working Abilis, you must initialize the IP-3 (init res:ip-3) and the IPRTR resources (init res:iprtr). The changes on IPACL table are immediately active.