IBM 8260 manual SET Module slot.port Bcnthreshold, SET Port slot.port Staticswitch enabledisabled

Active Per-Port Switching Module

Figure 110. Onboard Lobe/Trunk Jumpers on 18-Port

Note that setting the jumpers to the left selects RI/RO and setting the jumpers to the right selects lobe ports.

2.Set beacon threshold for the module.

When a beaconing condition is detected on a port, the port is wrapped by the recovery ASIC. The port is unwrapped when a transition of phantom is detected or when the port is disabled and then re-enabled by the administrator.

The number of times that a phantom transition is allowed to cause a port to unwrap is determined by the bcn_threshols parameter which can be set for each module using the following command:

SET MODULE {slot.port} BCN_THRESHOLD {0-255}

Once the threshold is exceeded, the port or trunk remains wrapped until the user disables and re-enables the port. While wrapped, the port status is

BCN THRES EXCEEDED.

Note: The bcn_threshold is reset whenever a port on the module successfully inserts into the ring, or the module is reset.

3.Enable/disable static switch for each port.

If you want the user of a port to power down the station (drop the phantom signal) before that port can be switched to another network segment, you must enable the static_switch for the specified port using the following command:

SET PORT {slot.port} STATIC_SWITCH {enabledisabled}

Once the static_switch is disabled, the port can be switched to another segment without dropping the phantom signal. For more information about static_switch please refer to 8.6.2, ªStatic Switch on the Per-Port Switching Modulesº on page 145.

4. Assign ports to network segments.

178 8260 Multiprotocol Intelligent Switching Hub