CTC Union GSW-3208M, Руководство пользователя

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Chapter 6. Manage / Configure the Switch
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12. MVR (Multicast VLAN Registration)
VLAN function will isolate traffic between VLAN groups. But it will also isolate IP multicast traffic for subscribers
in different VLANs. The MVR function allows one multicast VLAN to be shared by subscribers in different VLANs.
That can reduce the multicast traffic for VLANs.
13. DHCP Relay & DHCP Option 82
DHCP Relay function will control DHCP requests and forward DHCP requests to the assigned DHCP server. DHCP
Option 82 function will add port and switch information to DHCP requests and then send to the assigned DHCP
server. Based on those information, DHCP server will assign an IP configuration in the DHCP reply. This is a
security function.
14. IP Filtering
This function can limit the IP address and the subnet for accessing network from switch port. That can prevent illegal
IP problem in network.
15. Software Backup/Update
This switch supports backup and update functions for its internal software and its network configuration. It could be
done in two ways.
a. From console when booting : doing by Xmodem protocol and by terminal program for boot code and run-time
code updating.
b. From web browser : doing by http protocol and by web browser for run-time code and configuration
backup/update.
c. From telnet or console command : doing by tftp protocol for run-time code and configuration backup/update