<channel> qos – Heritage Kayaks Heritage Series User Manual

Page 112

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Heritage Series ADSL Bridge/ Router

107

Command Sets for Command Line Interface

driver. Normal limits are 0 only for port, 0 only for VPI, 1..1023 for
VCI. If a single argument

none

is supplied, any current connection is

torn down. This is equivalent to

svc none

on the channel. In the PPP

state machine, providing a link of this form causes the link to be ‘up’.
Note that

enable

must also be used, to allow the link to become

operational. The

ip

or

mac

indicates which form of data is transported

over the connection: one of IP data (controlled by the IPCP protocol),
or MAC data (for BCP). If neither is provided,

ip

is assumed. If the

channel is not linked to an interface, and the channel is for IP data, the
channel is linked to interface 1. If the channel is not linked to an
interface, and the channel is for MAC data, the channel is linked to
interface 2. Providing a PVC setting unsets any SVC setting. See the

svc

command. It is possible for a PVC to become ‘down’ in the PPP

state machine even though the PVC is still there, for instance due to
an authentication failure. If in this state, an incoming packet will
cause the PPP state machine to go ‘up’. If

listen

is specified then this is

the server end of a PVC. It will not send out PPP Configure Requests
until it first receives a packet over the PVC. When a connection is torn
down it goes returns to this state. Use the

info

command to read this

information.
Configuration saving saves this information. By default a channel has
no connection information.

Example:

> ppp 3 pvc 3 32

;

set channel 3 to be (VPI=3,VCI=32)

> ppp 4 pvc

;

read PVC settings for channel 4

> ppp 5 pvc 0

;

remove any PVC settings from

channel 5

16. <channel> qos

Syntax:

<channel> qos [cbr|ubr] [pcr <pcr-tx> [<pcr-rx>]]

Description:

Specify that the VC for a PPP channel should be Constant Bit Rate or
Unspecified Bit Rate, and (optionally for UBR) give a Peak Cell Rate
for the connection. If two values are specified then they are transmit
and receive PCRs respectively. If called while not attached to a VC
then the settings are saved for use when a VC is created. If the
channel is already attached to a VC then it is closed, and re-opened
with the new values. If it cannot be reopened, it remains closed.
Configuration saving saves this information. By default channels are

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