Netgear XCM8806 - 8800 SERIES 6-SLOT CHASSIS SWITCH ユーザーズマニュアル
Chapter 20. IPv4 Unicast Routing
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NETGEAR 8800 User Manual
To disable checking of DHCP replies, use this command:
unconfigure bootprelay dhcp-agent information check
Configuring the DHCP Packet Handling Policy
A DHCP relay agent may receive a client DHCP packet that has been forwarded from
another relay agent. If this relayed packet already contains a relay agent option, then the
switch handles this packet according to the configured DHCP relay agent option policy. The
possible actions are to replace the option information, to keep the information, or to drop
packets containing option 82 information. To configure this policy, use the following
command:
another relay agent. If this relayed packet already contains a relay agent option, then the
switch handles this packet according to the configured DHCP relay agent option policy. The
possible actions are to replace the option information, to keep the information, or to drop
packets containing option 82 information. To configure this policy, use the following
command:
configure bootprelay dhcp-agent information policy [drop | keep | replace]
The default relay policy is replace. To configure the policy to the default, use this command:
unconfigure bootprelay dhcp-agent information policy
Configuring the DHCP Agent Circuit ID Suboption
To configure the values used to create the agent circuit ID suboption, use the following
commands:
commands:
configure bootprelay dhcp-agent information circuit-id port-information
<port_info> port <port>
configure bootprelay dhcp-agent information circuit-id vlan-information
<vlan_info> {vlan} [<vlan_name>|all]
Verifying the DHCP/BOOTP Relay Configuration
To verify the DHCP/BOOTP relay configuration, use the following command:
show bootprelay
This command displays the configuration of the BOOTP relay service and the addresses that
are currently configured.
are currently configured.
Broadcast UDP Packet Forwarding
UDP Forwarding is a flexible and generalized routing utility for handling the directed
forwarding of broadcast UDP packets. UDP Forwarding enables you to configure your switch
so that inbound broadcast UDP packets on a VLAN are forwarded to a particular destination
IP address or VLAN. UDP Forwarding allows applications, such as multiple DHCP relay
services from differing sets of VLANs, to be directed to different DHCP servers.
forwarding of broadcast UDP packets. UDP Forwarding enables you to configure your switch
so that inbound broadcast UDP packets on a VLAN are forwarded to a particular destination
IP address or VLAN. UDP Forwarding allows applications, such as multiple DHCP relay
services from differing sets of VLANs, to be directed to different DHCP servers.
The following rules apply to UDP broadcast packets handled by this feature:
•
If the UDP profile includes BOOTP or DHCP, it is handled according to guidelines
specified in RFC 1542.