24+2G Gigabit Managed Switch User's Guide |
is too short however, many entries may be aged out too soon. This will result in a high percentage of received packets whose source addresses cannot be found in the forwarding table, in which case the switch will broadcast the packet to all ports, egating many of the benefits of having a switch.
Static forwarding entries are not affected by the aging time.
2)Static MAC Address
!If you set the wrong port of the address or change the port during operation, you must reset the Static MAC Address Table. Or else the address can't be used.
!After you configure the Static MAC Address the Switch can't operate normally if a equipment with this address connects to the other port of the Switch. It's better to delete the static address which won't be used when you configure the static MAC address.
4.4.4 Spanning Tree protocol
Figure 4-6 Spanning Tree protocol
Remarks:
1)There are limits as following:
24+2G Gigabit Managed Switch User's Guide |
Priority: 0 - 65535
Hello Time: 1 - 10
Maximum Age Timer: 6- 40
Forward Delay Timer: 4 - 30
Max. Age 
2 x (Forward Delay - 1 second)
Max. Age 
2 x (Hello Time + 1 second)
2)When the Spanning Tree changes from Disable to Enable, the port will be blocked for a while which is two times of the Forward Delay. After revision, you must TELNET the Switch again.
3)There are limits to the Port Priority and Port Cost. Port Priority: 0 255 (can configure 1 and 255) Port Cost: 1 65535 (can configure 1 and 65535)
4.4.5 IEEE802.1X protocol
Figure 4-7 IEEE802.1X protocol
Remarks:
1)The following MAC address can't be set into the Force AUTH MAC