Configuring Dcc Timers And Buffer Queue Length - 3Com MSR 50 Series Configuration Manual

178 C 6: DCC C
HAPTER ONFIGURATION
Configuring DCC Timers
and Buffer Queue
Length
To do...
Repeat this step to associate
multiple dial strings with the
same next-hop-address
C-DCC and RS-DCC are available with some optional parameters. You may
configure them appropriately to improve on-demand dial efficiency.
This section covers these topics:
"DCC timers and buffer queue length" on page 178
■
"Configuration procedure" on page 170
■
DCC timers and buffer queue length
Link idle-timeout timer
■
A link idle-timeout timer starts upon setup of a link. When the timer expires, DCC
disconnects the link.
Holddown timer
■
A holddown timer starts upon disconnection of a link. The call attempt to bring up
this link can be made only after the timer expires. This is to prevent a remote PBX
from being overloaded.
Compete-idle timer
■
If all the channels are unavailable when DCC originates a new call, contention
occurs.
Normally, an idle-timeout timer starts upon setup of a link. If a call to another
destination address is placed at the same time, contention occurs. In this case,
DCC starts a compete-idle timer to replace the idle-timeout timer for the link.
When the idle time of the link reaches the setting of this compete-idle timer, the
link disconnects.
Wait-carrier timer
■
Sometimes, the time that DCC waits for a connection to be established may vary
call by call. To handle this situation, you may use a wait-carrier timer. A wait-carrier
timer starts when a call is placed. If the connection is not established upon
expiration of the timer, DCC terminates the call.
Buffer queue length
■
If no connection is available when a dial interface without a buffer queue receives
a packet, it will drop the packet. Configured with a buffer queue, the dial interface
will buffer the packet until a connection is available for packet sending.
Use the command...
dialer route protocol next-hop-address
[ mask network-mask-length ] [ user
hostname | broadcast ] * dial-number
[ autodial | interface interface-type
interface-number ] *
Remarks
Required