BACKGROUND: I am working with a customer who is using MLPPP. Whenever the directly connected DACS experiences any sort of redunancy switchover, separate from an APS switchover, a path AIS is generated which causes the M40's ct3's to bounce. When this happens, all MLPPP re-negotiation/restart occurs resulting in higher than desired recovery times for the network that this service is serving. I found the following parameter in the Juniper docs but have no easy way to test this in the lab. Cisco has a similar feature called carrier-delay.
Question; does anyone have any experience or insight into the following interfaces hold-time parameter? http://www.juniper.net/techpubs/software/junos/junos76/swconfig76-networ k-interfaces/html/interfaces-physical-config31.html Damping Interface Transitions By default, when an interface changes from being up to being down, or from down to up, this transition is advertised immediately to the hardware and the JUNOS software. In some situations-for example, when an interface is connected to an add-drop multiplexer (ADM) or wavelength-division multiplexer (WDM), or to protect against SONET/SDH framer holes-you might want to damp interface transitions. This means not advertising the interface's transition until a certain period of time has passed, called the hold-time. When you have damped interface transitions and the interface goes from up to down, the interface is not advertised to the rest of the system as being down until it has remained down for the hold-time period. Similarly when an interface goes from down to up, it is not advertised as being up until it has remained up for the hold-time period. To damp interface transitions, include the hold-time statement at the [edit interfaces interface-name] hierarchy level: [edit interfaces interface-name] hold-time <http://www.juniper.net/techpubs/software/junos/junos76/swconfig76-netwo rk-interfaces/html/interfaces-summary143.html#1015655> up milliseconds down milliseconds; The time can be a value from 0 through 65,534 milliseconds. The default value is 0, which means that interface transitions are not damped. The JUNOS software advertises the transition within 100 milliseconds of the time value you specify. Thank you ! ~~~~~~~~~~~~~~~ Mike Judd Member of Technical Staff Alcatel-Lucent 4 Robbins Road Westford, MA 01886 office: 978-392-6406 Alcatel-Lucent Global TSS Contact Center ** 24x7x365 Customer Technical Support ** In the United States; 1-866-Lucent8, option 1 / 1-866-582-3688, option 1 Outside of the United States 1-630-224-4672 ~~~~~~~~~~~~~~~~~ _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp