170 CHAPTER 6: DCC C ONFIGURATION■ In the RS-DCC approach, configure in dialer interface view at the calling endand in physical dial interface view at the called end. At the calling end,however, you are recommended to configure the same PPP parameters onphysical dial interfaces as well to ensure reliable PPP link negotiation.When the three commands, ppp mp min-bind, dialer threshold, and ppp mpmax-bind, are configured, DCC brings up links as follows:5 Bring up a minimum number of links depending on the setting of the ppp mpmin-bind command.6 If traffic size still exceeds the link load threshold set by the dialer thresholdcommand, bring up the next idle link. This process continues until the number oflinks reaches the upper limit set by the ppp mp max-bind command or traffic sizedecreases below the specified link load threshold.Configuration procedureFollow these steps to configure MP for DCC:n ■ Configure PPP commands on both dialer and physical interfaces to ensurereliable PPP link negotiation.■ The dialer threshold 0 command voids the dialer timer idle command. DCCwill bring up all available links when triggered.■ Similar to the dialer threshold 0 command, the ppp mp min-bind commandvoids the dialer timer idle command. When it is configured, DCC does notlook at traffic size to bring up links for MP bundling or tear down links thathave been brought up.■ You need to configure the dialer threshold command only at the calling end.Configuring PPPCallbackPPP callback adopts the client/server model where the calling party is the callbackclient and the called party is the callback server. The client first originates a call,and the server decides whether to originate a return call. If a return call is needed,the callback server disconnects and then originates a return call according to theinformation such as username or callback number.To do... Use the command... RemarksEnter system view system-view --Enter dialer interface view interface dialer number --Enable MP ppp mp RequiredDisabled by default.Set link load thresholds dialer thresholdtraffic-percentage [ in-out | in| out ]RequiredIf the traffic-percentageargument is set to 0, DCC willbring up all available linkswhen triggered.Set upper limit of links in anMP bundleppp mp max-bindmax-bind-numOptionalThe default is 16.Set lower limit of links in anMP bundleppp mp min-bindmin-bind-numOptionalThe default is 0; DCC bringsup links depending on trafficsize.
