Avaya 1000 Series Configuration Manual page 92

PPP, MLPPP, and HDLC
A new command is added at the bundle subtree to reactivate all the links in that bundle. The
new command is hdlc_link_activate and has no parameters. If a link has automatically
deactivated due to excessive HDLC errors this allows the link to be brought up without having to
shutdown the bundle. The link could also be reactivated by issuing a shutdown and no
shutdown command on the bundle.
The problem where PPP bundle link would not come back up when there were no errors after
that link had been down due to excessive HDLC errors is fixed. The display of the bundle will
now show both that there is a loss of frame along with the excessive HDLC errors under the
link that has the problem. In the example below the PPP multilink bundle other has a link t1 13
which is down due to excessive HLDC errors and loss of frame.
If the router has the hdlc_link_deactivate command set then when the link that has
excessive HDLC errors on it is clean of errors, it will recover frame but the link will remain down.
The display of the bundle will still show the link has excessive HDLC errors on it. The link is
still deactivated and to reactivate it issue the hdlc_link_active command on the bundle
or the bundle that is shutdown and brought back up.
If the router has the hdlc_link_deactivate command not set, then when the link that has
excessive HDLC errors on it is clean of errors it will recover frame and the link will come up.
To unset hldc_link_deactivate enter the command no system
hdlc_link_deactivate.
92 Avaya Secure Router 1000 Series Configuration Guide December 2010