Example For Configuring Authorized Arp On A Dhcp Relay Agent - 3Com MSR 50 Series Configuration Manual

Example for Configuring
Authorized ARP on a
DHCP Relay Agent
[RouterA] dhcp enable
[RouterA] dhcp server ip-pool 1
[RouterA-dhcp-pool-1] network 10.1.1.0 mask 255.255.255.0
[RouterA-dhcp-pool-1] quit
# Enter Layer 3 Ethernet interface view.
[RouterA] interface ethernet 1/0
# Configure the DHCP server to support authorized ARP.
[RouterA-Ethernet1/0] dhcp update arp
# Enable authorized ARP.
[RouterA-Ethernet1/0] arp authorized enable
# Configure the aging time for authorized ARP entries.
[RouterA-Ethernet1/0] arp authorized time-out 120
[RouterA-Ethernet1/0] quit
2 Configure Router B
<RouterB> system-view
[RouterB] interface ethernet 1/0
[RouterB-Ethernet1/0] ip address dhcp-alloc
[RouterB-Ethernet1/0] quit
3 After Router B obtains the IP address from Router A, display the authorized ARP
information on Router A.
[RouterA] display arp all
Type: S-Static
IP Address MAC Address
10.1.1.2 0012-3f86-e94c
Network requirements
Router A acts as a DHCP server with an IP address pool of 10.10.1.0/24.
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Router B is a DHCP relay agent, which conveys IP address 10.10.1.2/24 from
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the DHCP server to the DHCP client (Router C).
Configuring Authorized ARP
D-Dynamic A-Authorized
VLAN ID Interface
N/A Eth1/0
557
Aging Type
1 A