Dynamic Ipv4Sg Using Dhcp Relay Configuration Example - HP FlexNetwork 10500 Series Security Configuration Manual

Configuration procedure
1. Configure the DHCP server.
For information about DHCP server configuration, see Layer 3—IP Services Configuration
Guide.
2. Configure the device:
# Configure IP addresses for the interfaces. (Details not shown.)
# Enable DHCP snooping.
<Device> system-view
[Device] dhcp snooping enable
# Configure GigabitEthernet 1/0/2 as a trusted interface.
[Device] interface gigabitethernet 1/0/2
[Device-GigabitEthernet1/0/2] dhcp snooping trust
[Device-GigabitEthernet1/0/2] quit
# Enable IPv4SG on GigabitEthernet 1/0/1 and verify the source IP address and MAC address
for dynamic IPSG.
[Device] interface gigabitethernet 1/0/1
[Device-GigabitEthernet1/0/1] ip verify source ip-address mac-address
# Enable recording of client information in DHCP snooping entries on GigabitEthernet 1/0/1.
[Device-GigabitEthernet1/0/1] dhcp snooping binding record
[Device-GigabitEthernet1/0/1] quit
Verifying the configuration
# Verify that a dynamic IPv4SG binding is generated based on a DHCP snooping entry.
[Device] display ip source binding dhcp-snooping
Total entries found: 1
IP Address
192.168.0.1

Dynamic IPv4SG using DHCP relay configuration example

Network requirements
As shown in
the DHCP server through the DHCP relay agent.
Enable dynamic IPv4SG on VLAN-interface 100 to filter received packets based on the DHCP relay
entry.
Figure 121 Network diagram
Configuration procedure
1. Configure dynamic IPv4SG:
# Configure IP addresses for the interfaces. (Details not shown.)
# Enable IPv4SG on VLAN-interface 100 and verify the source IP address and MAC address for
dynamic IPSG.
MAC Address
0001-0203-0406 GE1/0/1
Figure 121, DHCP relay is enabled on the switch. The host obtains an IP address from
Interface
425
VLAN Type
1 DHCP snooping