Black Box LPB708A Manual De Usuario
Chapter 6: IP Address Assignment
724-746-5500 l www.blackbox.com
41
Parameter description: Aging Time: You can set queue aging time of the packet buffer into different timing or disable
this function. The options are 200, 400, 600 and 800 miniseconds.
VLAN Striding: This switch does NOT support Unicast. But you can enable this function to allow the switch to forward the
unicast packet to its destination port whether or not the destination port is in the same VLAN group without dropping the
packet.
IGMP Snooping: The switch supports version 1 and 2. The function is used to establish the multicast groups to forward
the multicast packet to the member ports, and avoids wasting bandwidth while IP multicast packets are running over the
network. This is because a switch that does not support IGMP or IGMP Snooping can not tell the multicast packet from
the broadcast packet, so it can only treat them all as broadcast packets. Without IGMP Snooping, the multicast packet
forwarding function is plain and nothing is different from a broadcast packet.
A switch supports IGMP Snooping with query, report, and leave functions. A type of packet exchanged between IP
Multicast Router/Switch and IP Multicast Host can update the information in the Multicast table when a member (port)
joins or leaves an IP Multicast Destination Address. With this function, once a switch receives an IP multicast packet, it
will forward the packet to the members who joined in a specified IP multicast group before.
The packets will be discarded by the IGMP Snooping if the user transmits multicast packets to the multicast group that
had not been built up in advance.
this function. The options are 200, 400, 600 and 800 miniseconds.
VLAN Striding: This switch does NOT support Unicast. But you can enable this function to allow the switch to forward the
unicast packet to its destination port whether or not the destination port is in the same VLAN group without dropping the
packet.
IGMP Snooping: The switch supports version 1 and 2. The function is used to establish the multicast groups to forward
the multicast packet to the member ports, and avoids wasting bandwidth while IP multicast packets are running over the
network. This is because a switch that does not support IGMP or IGMP Snooping can not tell the multicast packet from
the broadcast packet, so it can only treat them all as broadcast packets. Without IGMP Snooping, the multicast packet
forwarding function is plain and nothing is different from a broadcast packet.
A switch supports IGMP Snooping with query, report, and leave functions. A type of packet exchanged between IP
Multicast Router/Switch and IP Multicast Host can update the information in the Multicast table when a member (port)
joins or leaves an IP Multicast Destination Address. With this function, once a switch receives an IP multicast packet, it
will forward the packet to the members who joined in a specified IP multicast group before.
The packets will be discarded by the IGMP Snooping if the user transmits multicast packets to the multicast group that
had not been built up in advance.
Figure 4-32. Miscellaneous Setting screen.
4.12
Logout
The switch allows you to logout the system to prevent other users from the using the system without permission.