Viewing VLACP properties

To view the VLACP tab:

Procedure steps


Step Action

1

In the Device Physical Viewdouble-click the port. Multiple ports can be edited by selecting ports with the Control (CTRL) key depressed.
Or
From the navigation tree, double-click Edit.

2

From the Edit tree, double-click Chassis.

3

From the Chassis tree, double-click Ports.

4

Select the VLACP tab.


--End--

The following table outlines the parameters for the VLACP tab.

Variable definitions

Variable Value
OperEnable Indicates whether VLACP is operationally enabled (true) or disabled (false).
Attention

VLACP is only operational when OperEnable is true and PortState is up.

FastPeriodicTimer Indicates the number of milliseconds between periodic transmissions using short timeouts. Valid values range from 400-20000 with a default of 500.
SlowperiodicTimer Indicates the number of milliseconds between periodic transmissions using long timeouts. Values range from 10000-30000 with a default of 30000.
Timeout Indicates whether the timeout control value is a short or long timeout.
TimeoutScale

Indicates the scale value used to calculate timeout from periodic time. Values range from 1–10. The default is 3.

With VLACP, a short interval exists between a port transmitting a VLACPDU and the partner port receiving the same VLACPDU. If the timeout-scale is set to 1, the port timeout value does not take into account the normal travel time of the VLACPDU. The port expects to receive a VLACPDU at the same moment the partner port sends it. Therefore, the delayed VLACPDU results in the link being blocked, and then enabled again when the packet arrives. Nortel recommends that you set the timeout scale to a value larger than 1.

EtherType Indicates VLACP protocol identification. The value can be entered as a numerical value ranging from 33025–33279 or a hexadecimal equivalent (8101–81ff). The default is 8103. Use the prefix 0x to type a hexadecimal value in the dialog box. Only hexadecimal values display in the EtherType column of the VLACP work area.
EtherMacAddress

Indicates the MAC address of the switch or stack to which this port is sending VLACPDUs. This value cannot be configured as a multicast MAC. The default value is 00:00:00:00:00:00.

VLACP uses only the multicast MAC address configured when VLACP is enabled globally. This is the Layer 2 destination address used for the VLACPDUs. The port-specific EtherMACAddress specifies the MAC address of the switch or stack to which this port is sending VLACPDUs. If you do not type a value for the EtherMACAddres s, the first VLACP-enabled switch that receives the PDUs from a sending port becomes the intended recipient and processes the PDUs.

If you want an intermediate switch to drop VLACP packets, configure EtherMACAddress with the desired destination MAC address. With EtherMACAddress configured, the intermediate switches do not misinterpret the VLACP packets.

PortState Indicates whether the VLACP port state is up or down.
Attention

VLACP is only operational when OperEnable is true and PortState is up.

For more information on the VLACP tab, see Nortel Ethernet Routing Switch 5000 Series Configuration — VLANs, Spanning Tree, and Multi-Link Trunking (NN47200-502).