3Com S7906E - Switch, Configuration Manual

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1-8
# Enable IP Source Guard on OLT 3/0/1.
[Sysname-Olt3/0/1] ip check source ip-address mac-address
[Sysname-Olt3/0/1] quit
# Create an ONU port ONU 3/0/1:1 and bind it with the ONU.
[Sysname] interface olt 3/0/1
[Sysname-Olt3/0/1] using onu 1
[Sysname-Olt3/0/1] quit
[Sysname] interface onu3/0/1:1
[Sysname-Onu3/0/1:1] bind onuid 000f-e200-0001
2) Verify the configuration.
# After the user obtains an IP address from the DHCP server, display the dynamic DHCP snooping entry
obtained by OLT 3/0/1 on the OLT device.
<Sysname> display ip check source interface olt 3/0/1
The Following User address bind have been configured:
Mac IP Vlan Port Status
0001-0203-0406 192.168.0.1 1 Olt3/0/1 DHCP-SNP
# Display the existing dynamic DHCP snooping entry to check whether it is the same as the one
obtained by OLT 3/0/1.
<Sysname> display dhcp-snooping
DHCP Snooping is enabled.
The client binding table for all untrusted ports.
Type : D--Dynamic , S--Static
Type IP Address MAC Address Lease VLAN Interface
==== =============== ============== ============ ==== =================
D 192.168.0.1 0001-0203-0406 86335 1 Onu3/0/1:1
The display shows that, after IP Source Guard is enabled on OLT 3/0/1, the port obtains the dynamic
entry generated by DHCP snooping.
Dynamic Binding Function Configuration Example 3
Network requirements
As shown in Figure 1-4 , Switch A connects to Client A and the DHCP server through interfaces
VLAN-interface 100 and VLAN-interface 200 respectively. DHCP Relay is enabled on Switch A.
Detailed requirements are as follows:
z
Client A (with the MAC address of 00-01-02-03-04-06) obtains an IP address from the DHCP
server through DHCP Relay.
z
On interface VLAN-interface 100, enable the dynamic binding function to filter packets by using the
generated DHCP Relay entries.
Figure 1-4 Network diagram for configuring dynamic binding