Max Packet Length; Dhcp Boot; Vlan - Black Box 12-Port 1000BASE-TX L2 Managed PoE Switch User Manual

With 2 sfpdual media ports

Table of Contents

12-Port 1000BASE-TX L2 Managed PoE Switch with 2 SFP Dual Media Ports

Parameter

IP Address

VLAN ID

Member Port

4.10 Max Packet Length

The switch is capable of dealing with 9k Jumbo Frames, which suits the transmission for a large amount of data

in the network environment.

Parameter

Jumbo Frame (bytes)

The DHCP Boot function is used to spread the request broadcast packet into a bigger time frame to prevent

the traffic congestion due to broadcast packets from many network devices which may seek its NMS, boot server,

DHCP server and many connections predefined when the whole building or block lose the power and then

reboot and recover. At this moment, a bunch of switch or other network device on the LAN will try its best to

find the server to get the services or try to set up the predefined links, they will issue many broadcast packets in

the network.

The switch supports a random delay time for DHCP and boot delay for each device. This suppresses the

broadcast storm while all devices are at booting stage in the same time. The maximum user-defined delay time

is 30 sec. If DHCP Broadcasting Suppression function is enabled, the delay time is set randomly, ranging from 0

to 30 seconds, because the exactly delay time is computed by the switch itself. The default is "Disable".

The switch supports Tag-based VLAN (802.1q) and Port-based VLAN. Support 256 active VLANs and VLAN

ID 1~4094. VLAN configuration is used to partition your LAN into small ones as your demand. Properly

configuring it, you can gain not only improving security and increasing performance but greatly reducing

VLAN management.

Table 4-24 (Continued). IGMP Snooping screen options.

Show all multicast groups IP addresses that are registered on this

device.

Show VLAN ID for each multicast group.

Show member ports that join each multicast group. Member port

may be only or more than one.

Table 4-25. Max Packet Length screen options.

Set up the maximum length of the packet that each port of the

switch can accept. Maximum length can be up to 1532 bytes or

9208 bytes. The default is 1532 bytes.

Description

Table of Contents