52
<Sysname> system-view
[Sysname] dhcp server ip-pool 0
[Sysname-dhcp-pool-0] vpn-instance abc
DHCP relay agent commands
dhcp relay check mac-address
Use
dhcp
relay
check
mac-address
to enable MAC address check on the relay agent.
Use
undo
dhcp
relay
check
mac-address
to disable MAC address check on the relay agent.
Syntax
dhcp relay check mac-address
undo dhcp relay check mac-address
Default
The MAC address check feature is disabled.
Views
Interface view
Predefined user roles
network-admin
Usage guidelines
This feature enables the DHCP relay agent to compare the
chaddr
field of a received DHCP request
with the source MAC address in the frame header. If they are the same, the DHCP relay agent
forwards the request to the DHCP server. If they are not the same, the DHCP relay agent discards
the request.
The MAC address check feature takes effect only when the
dhcp select relay
command has
already been configured on the interface.
Enable the MAC address check feature only on the DHCP relay agent directly connected to the
DHCP clients. A DHCP relay agent changes the source MAC address of DHCP packets before
sending them.
Examples
# Enable MAC address check on the DHCP relay agent.
<Sysname> system-view
[Sysname] interface vlan-interface 10
[Sysname-Vlan-interface10] dhcp relay check mac-address
Related commands
dhcp select relay
dhcp relay check mac-address aging-time
Use
dhcp relay check mac-address aging-time
to set the aging time for MAC address
check entries on the DHCP relay agent.
Use
undo
dhcp relay check mac-address aging-time
to restore the default.
Summary of Contents for SOHO IE4300
Page 285: ...i Contents Tcl commands 1 cli 1 tclquit 1 tclsh 2...
Page 288: ...i Contents Python commands 1 exit 1 python 1 python filename 2...
Page 291: ...i Contents Automatic configuration commands 1 autodeploy udisk enable 1...
Page 323: ...25 Sysname Ten GigabitEthernet1 0 51 undo shutdown Related commands irf port...
Page 465: ...ii stp vlan enable 55 vlan mapping modulo 55...
Page 602: ...12 Related commands display mvrp statistics...
Page 609: ...i Contents VLAN mapping commands 1 display vlan mapping 1 vlan mapping 2...
Page 678: ...9 Related commands reset pppoe relay statistics...
Page 846: ...i Contents Basic IP forwarding commands 1 display fib 1 ip forwarding table save 2...
Page 1770: ...i Contents Time range commands 1 display time range 1 time range 1...
Page 2026: ...34 Related commands display mac authentication...
Page 2028: ...ii...
Page 2143: ...i Contents User profile commands 1 display user profile 1 user profile 2...
Page 2308: ...61 ipsec transform set...
Page 2531: ...i Contents SAVI commands 1 ipv6 savi down delay 1 ipv6 savi log enable 1 ipv6 savi strict 2...
Page 2534: ...3 Sysname ipv6 savi strict Related commands ipv6 verify source...
Page 2791: ...14 Sysname track 1 Related commands delay display track...
Page 2939: ...9 sntp authentication keyid sntp reliable authentication keyid...
Page 2967: ...27 Related commands apply poe profile poe enable poe max power interface view poe priority...