DHCP Snooping Configuration
302
information to Log Server via syslog.
LOG Function:
When the switch discovers abnormal received packets or automatically
recovers, it should send syslog information to Log Server.
The Encryption of Private Messages:
The communication between the switch and the
inner network security management system TrustView uses private messages. And the
users can encrypt those messages of version 2.
Add authentication option82
Function: It is used
with dot1x
dhcpoption82
authentication mode. Different option 82 will be added in DHCP messages according to
user‘s authentication status.
35.2
DHCP Snooping Configuration Task Sequence
1. Enable DHCP Snooping
2. Enable DHCP Snooping binding function
3. Enable DHCP Snooping binding ARP function
4. Enable DHCP Snooping option82 function
5. Set the private packet version
6. Set DES encrypted key for private packets
7. Set helper server address
8. Set trusted ports
9. Enable DHCP Snooping binding DOT1X function
10. Enable DHCP Snooping binding USER function
11. Adding static list entries function
12. Set defense actions
13. Set rate limitation of DHCP messages
14. Enable the debug switch
15. Configure DHCP Snooping option 82 attributes
1. Enable DHCP Snooping
Command
Explanation
Globe mode
ip dhcp snooping enable
no ip dhcp snooping enable
Enable or disable the DHCP snooping
function.