C613-50631-01 Rev A Command Reference for IE340 Series 2571
AlliedWare Plus™ Operating System - Version 5.5.3-0.x
DHCP SNOOPING COMMANDS
IP
DHCP SNOOPING DISABLE-L2-FLOODING
ip dhcp snooping disable-l2-flooding
Overview Use this command to disable Layer 2 flooding of DHCP packets on the specified
VLANs. These should be VLANs that you have not enabled DHCP snooping on.
You need to do this if you have enabled DHCP snooping on a subset of your VLANs
and you are using Q-in-Q (VLAN stacking or VLAN double-tagging). Otherwise, the
switch may forward two copies of some DHCP packets on the non-snooping
VLANs, with one copy being single-tagged instead of double-tagged.
Use the no variant of this command to enable Layer 2 flooding of DHCP packets
again.
Syntax
ip dhcp snooping disable-l2-flooding
no ip dhcp snooping disable-l2-flooding
Default The no variant, so Layer 2 flooding of DHCP packets is enabled
Mode Interface Configuration for a VLAN interface.
Example To disable Layer 2 flooding on VLANs 10-20, which DHCP snooping is not enabled
on, use the commands:
awplus# configure terminal
awplus(config)# interface vlan10-vlan20
awplus(config-if)# ip dhcp snooping disable-l2-flooding
Related
commands
service dhcp-snooping
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