Motorola P880 User Manual

Page of 104
Cajun P880 Routing Switch Installation Guide 
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3. From the Spanning Tree pull-down menu, select to Enable or 
Disable spanning tree protocol on this port.
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 limits 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 
the Cajun P550/P220 Switch Operation 
Guide
, 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
Table 16.  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-level - causes the port to send frames 
using the multilevel format.
VLAN Binding
Bind to All - binds the port to all VLANs 
known to the switch.
Automatic 
VLAN Creation
Enable - 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.