Motorola CAJUN P880 User Manual

Page 47

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Cajun P880 Routing Switch Installation Guide

2 - 13

7. If this is an end-station port, from the Category pull-down

menu, select

User Port. For trunk ports, select Service Port.

8. From the Speed Mode pull-down menu, select a speed (10

Mb/s or 100 Mb/s) if you want to set the port speed manually. If
you set the port to auto-negotiate, this setting is ignored.

9. From the Duplex Mode pull-down menu, select a mode

(

Half-duplex or Full-duplex) if you want to set the port’s

duplex mode manually. If you set the port to auto-negotiate, this
setting is ignored.

10. From the Flow Control Mode pull-down menu, select Enable

if you want this port to use Flow Control to prevent buffer
overflows. Disable this feature only when flow control is causing
congestion in other areas of the network.

11. From the Auto Negotiation Mode pull-down menu, select

Enable.

* Note: This feature works best when the port or device

on the other end of the connection auto-
negotiates as well. If you are having problems
with auto-negotiating connections, try setting
the modes manually using the command line
interface. For example,

set port auto 7/3

enable

.

12. From the Auto Negotiation Speed Advertisement and

Auto Negotiation Duplex Advertisement pull-down
menus, set

Speed and Duplex Advertisement, respectively.

The switch sends these values to the device on the other end of
the connection at the start of the auto-negotiating process. In
general, the defaults are best, but there may be situations when
you want to fix one setting, but allow the other setting to auto-
negotiate.

13. From the Rate Limit Mode pull-down menu, select Enable if

you want this port to limit the number of unknown unicast and
multicast (flooded) packets it tries to forward.

a. From the Rate Limit Rate pull-down menu, select the

percentage of a port’s traffic that can be unknown unicast
and broadcast packets. Lower this value if the port is having
overflow problems.

b. From the Rate Limit Burst Size pull-down menu, select a

packet limit for the number of packets allowed in a single
burst. Valid values are 1 to 2048. For Fast Ethernet ports, set

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