3com 4900 sx Quick Setup Guide
16
C
HAPTER
1: I
NTRODUCING
THE
S
WITCH
4900 SX
Expansion Module
Slot
You can use this slot to install an Expansion Module. Contact your supplier
for further information.
for further information.
WARNING:
When an Expansion Module is not installed, ensure the
blanking plate is fitted by tightening all screws with a suitable tool.
Default Settings
shows the default settings for the Switch 4900 SX. If you initialize
the Switch units, it is returned to these defaults.
Table 6 Default Settings
Feature
Switch 4900 SX
Port Status
Enabled
Port Speed
1000BASE-SX
Duplex Mode
Full duplex
Flow Control
Auto-negotiated
Broadcast Storm Control
Enabled
High threshold: 3000 broadcast frames per second -
Notify and filter
Notify and filter
Low threshold: 1500 broadcast frames per second -
Notify and unfilter
Notify and unfilter
Virtual LANs (VLANs)
All ports belong to the untagged Default VLAN
(VLAN 1) only. 802.1Q learning is disabled
(VLAN 1) only. 802.1Q learning is disabled
Multicast Filtering
IGMP filtering is enabled
Spanning Tree Protocol
Disabled
17702ua.bk Page 16 Friday, April 6, 2001 3:31 PM