TRENDnet TI-RP262i User Manual page 67

TRENDnet User's Guide
configure no mac-vlan entry
STRINGS
configure no mac-vlan all
Example:
[DEVICE_NAME](config)#mac-vlan 00:01:02:03:04 vlan 111 priority 1
[DEVICE_NAME](config)#mac-vlan 00:01:02:22:04 vlan 121 priority 1
[DEVICE_NAME](config)#mac-vlan 00:01:22:22:04:05 vlan 221 priority 1
Web Configuration
Advanced Settings > VLAN > MAC VLAN
Parameter Description
MAC Address Configures the leading three or more bytes of the MAC address.
VLAN Configures the VLAN.
Priority Configures the 802.1Q priority.
Action Click the "Delete" button to delete the protocol VLAN profile.
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This command deletes a mac-vlan entry.
This command deletes all of the mac-vlan
entries.
DHCP Options
DHCP Options, formally known as DHCP Options 82 is the "DHCP Relay Agent Information
Option". Option 82 was designed to allow a DHCP Relay Agent to insert circuit specific
information into a request that is being forwarded to a DHCP server. Specifically the
option works by setting two sub-options: Circuit ID and Remote ID.
The DHCP option 82 is working on the DHCP snooping or/and DHCP relay. The switch will
monitor the DHCP packets and append some information as below to the DHCPDISCOVER
and DHCPREQUEST packets. The switch will remove the DHCP Option 82 from the
DHCPOFFER and DHCPACK packets. The DHCP server will assign IP domain to the client
dependent on these information.
The maximum length of the information is 32 characters.
In residential, metropolitan Ethernet-access environments, DHCP can centrally manage
the IP address assignments for a large number of subscribers. When the DHCP option-82
feature is enabled on the switch, a subscriber device is identified by the switch port
through which it connects to the network (in addition to its MAC address). Multiple hosts
on the subscriber LAN can be connected to the same port on the access switch and are
uniquely identified.
When you enable the DHCP snooping information option 82 on the switch, this sequence
of events occurs:
•
The host (DHCP client) generates a DHCP request and broadcasts it on the network.
•
When the switch receives the DHCP request, it adds the option-82 information in
the packet. The option-82 information contains the switch MAC address (the
remote-ID suboption) and the port identifier, vlan-mod-port, from which the packet
is received (the circuit-ID suboption).
•
If the IP address of the relay agent is configured, the switch adds the IP address in
the DHCP packet.
•
The switch forwards the DHCP request that includes the option-82 field to the DHCP
server.
•
The DHCP server receives the packet. If the server is option-82 capable, it can use
the remote ID, the circuit ID, or both to assign IP addresses and implement policies,
such as restricting the number of IP addresses that can be assigned to a single
Managed Industrial L2 Switch
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