User guide

QoS implementation for DIFFSERV QOS
7-9
iMG/RG Software Reference Manual (Quality of Service)
7.1.3.3.6 Configuring the meter
To configure the Meter, use the following CLI commands:
1. Create a profile using one of the commands:
METER ADD PROFILESRTCM
METER ADD PROFILETOKENBUCKET
METER ADD PROFILETRTCM
The metering algorithm type and associated parameters are specified in the command options.
2. By default, green and yellow packets are passed and red packets are dropped. But, you can override these
default settings and configure the profile to drop, mark or pass packets for a sp
ecific result, using the fol-
lowing commands:
METER SET PROFILE {GREEN | RED | YELLOW} ACTION DROP
METER SET PROFILE {GREEN | RED | YELLOW} ACTION MARK DSCP
METER SET PROFILE {GREEN | RED | YELLOW} ACTION PASS
3. Add the profile to an existing transport using the command:
TRANSPORTS SET DEFAULT METER INSTANCE PROFILE
Multiple meter instances can be added to the same transport.
Note: Note that the meter can be assigned only on the ethernet transport named default
7.1.3.4 Scheduler
On the gateways, the Scheduler is used to schedule outgoing packets, belonging to different priority streams, for
transmission on an outgoing interface as per the configured service discipline.
Note: If the Scheduler is configured on a network interface (actually it’s only supported on ADSL interface), all
packets transmitted through that network interface driver are first processed by the Scheduler Device.
The Scheduler device provides the following functions:
• Algorithmic dropper
• Queuing
• Scheduling
• Shaping
These components can be configured in the Scheduler to provide all the above functions or a subset of the
above functions, depending on the network requirements. The possible combinations are:
• Shaping only.