3Com MSR 50 Series, Руководство по настройке

Страница: 596 / 2443

596 C
HAPTER
34: DHCP R
ELAY
A
GENT
C
ONFIGURATION
n
■
To support Option 82, it is required to perform related configuration on both
the DHCP server and relay agent. Refer to
“Configuring the Handling Mode for
Option 82” on page 584 for DHCP server configuration of this kind.
■
If the handling strategy of the DHCP relay agent is configured as replace , you
need to configure a padding format for Option 82. If the handling strategy is
keep or drop , you need not configure any padding format.
■
If sub-option 1 (node identifier) of Option 82 is padded with the device name
(sysname) of a node, the device name must contain no spaces. Otherwise, the
DHCP relay agent will drop the message.
Displaying and
Maintaining the DHCP
Relay Agent
Configuration
DHCP Relay Agent
Configuration
Example
Network requirements
Ethernet1/1 of the DHCP relay agent (Router A) connects to the subnet where
DHCP clients reside. The IP address of Ethernet1/1 is 10.10.1.1/24, and the IP
To do... Use the command... Remarks
Enter system view system-view -
Enter interface view interface interface-type
interface-number
-
Enable the relay agent to
support Option 82 dhcp relay information
enable Required
Disabled by default.
Configure the handling
strategy for requesting
messages containing Option
82 dhcp relay information
strategy
{ drop | keep |
replace }
Optional
replace by default.
Configure the padding format
for Option 82 dhcp relay information
format
{ normal | verbose
[ node-identifier { mac |
sysname | user-defined
node-identifier } ] }
Optional
normal by default.
To do... Use the command... Remarks
Display information about DHCP
server groups correlated to a
specified or all interfaces display dhcp relay { all |
interface interface-type
interface-number }
Available in any view
Display information about bindings
of DHCP relay agents display dhcp relay security
[ ip-address | dynamic | static ]
Available in any view
Display statistics information about
bindings of DHCP relay agents display dhcp relay security
statistics Available in any view
Display information about the
refreshing interval for entries of
dynamic IP-to-MAC bindings display dhcp relay security
tracker Available in any view
Display information about the
configuration of a specified or all
DHCP server groups display dhcp relay
server-group
{ group-id | all }
Available in any view
Display packet statistics on relay
agent display dhcp relay statistics
[ server-group { group-id |
all } ]
Available in user view
Clear packet statistics from relay
agent reset dhcp relay statistics
[ server-group group-id ]
Available in user view