Lucent Technologies P550 - Manual (Page 66)

Configuring the Cajun P550 Switch (Layer 2 & Layer 3)
3 -20 Cajun P550/P220 Switch Operation Guide
4. From the Fast Start pull-down menu, select to Enable or Disable. When
enabled, Fast Start mode ports begin forwarding traffic without waiting for the
spanning tree negotiation to complete. Fast start eliminates the waiting time of
listen and learn states. Ports immediately enter the forward state.
5. From the Known Mode pull-down menu, select to Enable or Disable. Selecting
Enable suppresses the packets with unknown unicast destination addresses flooded
to this port. For example, if a known end-station or file server is connected to the
port, there’s no need to flood unknown unicasts to that port. You must manually
enter a static MAC address for the station actually attached to the port.
6. From the 3Com Mapping Table pull-down menu, select an assignment to
specify how incoming tagged frames from 3Com equipment are mapped to Lucent
VLANs. Refer to “Creating 3Com Mapping Tables”, in Chapter 12, for more
information on 3Com Mapping Tables.
7. Click APPLY to save your changes, or CANCEL to restore previous settings.
Examples of Switch Ports Settings for Various VLAN Connection Types
Use Table 3-11 through Table 3-13 for recommended switch port settings for each
connection type.
Note: Automatic VLAN Creation and VTP Snooping must not be enabled at the
same time.
Table 3-11. Example 1. Trunk to Cisco Catalyst 5000
TM
Parameter Recommended Setting
Port VLAN Default - causes untagged packets to be assigned to the
default VLAN.
Trunk Mode Multi-layer - causes the port to send frames using the
multi-layer format.
VLAN Binding Bind to All - binds the port to all VLANs known to the
switch.
Automatic VLAN
Creation Enable (Disable if using VTP Snooping) - causes the
switch to learn new VLAN IDs that arrive at the port, and then
bind the port to these VLANs.
VTP Snooping Enable - cause the switch to update its VLANs as they are
created, deleted, or changed on the Catalyst.