HP MSR2000/3000/4000 Router Series Layer 3 - IP Services Command Reference

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When enabled to support Option 82, the DHCP relay agent always adds Option 82 into DHCP requests
that do not contain Option 82 before forwarding the requests to the DHCP.
Examples
# Specify the handling strategy for Option 82 in request messages as keep.
<Sysname> system-view
[Sysname] interface ethernet1/1
[Sysname-Ethernet1/1] dhcp snooping information enable
[Sysname-Ethernet1/1] dhcp snooping information strategy keep
Related commands
• dhcp snooping information circuit-id
• dhcp snooping information remote-id
dhcp snooping rate-limit
Use dhcp snooping rate-limit to configure the maximum rate at which an interface can receive DHCP
packets.
Use undo dhcp snooping rate-limit to remove the rate limit.
Syntax
dhcp snooping rate-limit rate
undo dhcp snooping rate-limit
Default
Incoming DHCP packets on an interface are not rate limited.
Views
Layer 2 Ethernet interface view
Predefined user roles
network-admin
Parameters
rate: Specifies the maximum rate for an interface to receive DHCP packets, in Kbps. The value range is
64 to 512.
Usage guidelines
This command takes effect only when DHCP snooping is enabled.
With the rate limit function, the interface discards DHCP packets that exceed the maximum rate.
Examples
# Set the maximum rate at which the Layer 2 Ethernet interface Ethernet 1/1 can receive DHCP packet
to 64 Kbps.
<Sysname> system-view
[Sysname] interface ethernet 1/1
[Sysname-Ethernet1/1] dhcp snooping rate-limit 64