Airlive POE-GSH2404M handleiding
Handleiding
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8 MAC Address Table
Ethernet switches are mainly innovated to forward according to the purposes in the
data link layer. That is, MAC address will transmit the messages to corresponding ports
according to the purposes. MAC address forwarding table is a L2 table illustrating MAC
addresses and forwarding ports, which is the basis of fast forwarding of L2 messages.
MAC address forwarding table contains following data:
● Destination MAC Address
● VLAN ID belonging to port
● Forwarding ingress No. of this device
There are two message forwarding types according to MAC address table info:
● Unicast mode: the switch directly transmits the messages from the table’s egress
when MAC address forwarding table contains corresponding entries with the destination
MAC address.
● Broadcast mode: When the switch receives the messages with the destination
address full of F-bits, or there is no entry corresponding to the MAC destination address
in the forwarding table, the switch will forward the messages to all ports excluding the
receiving port in this way.
8.1 Dynamic Address
Aging time and table info of MAC addresses can be configured and checked on this
page.
MAC address table needs constant updates to cater to network changes. It
automatically generates entries that are limited by their lifetime (i.e. aging time). Those
entries not refreshed after expiration will be deleted. The aging time of an entry will be
recalculated if its record is refreshed before expiration.
Proper aging time helps to achieve the aging target of MAC address. Shortage of
aging time may lead many switches broadcast to discover the packets of destination MAC
addresses, thus influencing the switch performance.
Aging too long can cause the switch to save outdated MAC address entries, thus exhausting
the forwarding resources and failing to update the forwarding table based on network
changes.
The switch may remove valid MAC address table entries due to too short aging
time, thus reducing forwarding efficiency. In general, the aging time recommended is 300
seconds by default.
Instructions for aging time setting:
1. Click the “MAC Address Table > Dynamic Address” in the navigation bar to the
configuration and view interface:
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Productinformatie
| Merk | Airlive |
| Model | POE-GSH2404M |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 72641 MB |
