Before the ppp multilink load-threshold, multilink ppp
would bring up all b channels in the bundle for
any volume of traffic. With the addition of this command multilink ppp
would bring up enough b-channels or interface bandwidth aggregation enough to
forward the traffic load that has passed a threshold or tear down interfaces or b channels if
traffic load falls below the threshold.
dial load threshold on the other hand was to
allow a dialer do load balancing on as needed basis ( based on traffic load). B channels are
brought up or town down based on threshold crossing. PPP multilink on the other hand was
another option for dialer interfaces which would cause
all chanels under the dialer control to be brought up for even on packet which
explain the command explain above.