Planet XGS3-24042 User Manual download pdf (Page 259)

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32.3 DHCPv6 option37, 38 Examples

32.3.1 DHCPv6 Snooping option37, 38 Example

Figure 32-1 DHCPv6 Snooping option schematic

As is shown in the figure above, Mac-AA, Mac-BB and Mac-CC are normal users, connected to untrusted

interface 1/2, 1/3 and 1/4 respectively, and they get IP 2010:2, 2010:3 and 2010:4 through DHCPv6 Client;

DHCPv6 Server is connected to the trusted interface 1/1. Configure three address assignment policies

(CLASS), of which CLASS1 matches option 38, CLASS2 matches option 37 and CLASS3 matches option 37

and option 38. In the address pool EastDormPool, the requests matched with CLASS1, CLASS2 and

CLASS3 will be assigned an address ranging from 2001:da8:100:1::2 to 2001:da8:100:1::30, from

2001:da8:100:1::31 to 2001:da8:100:1::60 and from 2001:da8:100:1::61 to2001:da8:100:1::100 respectively;

DHCPv6 snooping function is enabled and option 37 and option 38 are configured in Switch A.

Switch A configuration:

SwitchA(config)#ipv6 dhcp snooping remote-id option

SwitchA(config)#ipv6 dhcp snooping subscriber-id option

SwitchA(config)#int e 1/0/1

SwitchA(config-if-ethernet1/0/1)#ipv6 dhcp snooping trust

SwitchA(config-if-ethernet1/0/1)#exit

SwitchA(config)#interface vlan 1

SwitchA(config-if-vlan1)#ipv6 address 2001:da8:100:1::1

SwitchA(config-if-vlan1)#exit

SwitchA(config)#interface ethernet 1/0/1-4

SwitchA(config-if-port-range)#switchport access vlan 1

SwitchA(config-if-port-range)#exit

SwitchA(config)#

Switch B configuration:

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Planet XGS3-24042 User Manual Page 259

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