display dhcp client

Syntax

display dhcp client [ verbose ] [ interface interface-type interface-number ] [ | { begin | exclude | include } regular-expression ]

View

Any view

Default level

1: Monitor level

Parameters

verbose: Specifies verbose DHCP client information to be displayed.

interface interface-type interface-number: Specifies an interface for which to display DHCP client information.

|: Filters command output by specifying a regular expression. For more information about regular expressions, see Fundamentals Configuration Guide.

begin: Displays the first line that matches the specified regular expression and all lines that follow.

exclude: Displays all lines that do not match the specified regular expression.

include: Displays all lines that match the specified regular expression.

regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.

Description

Use display dhcp client to display DHCP client information. If no interface interface-type interface-number is specified, this command displays DHCP client information about all interfaces.

Examples

# Display DHCP client information about all interfaces.

<Sysname> display dhcp client
Vlan-interface1 DHCP client information:
 Current machine state: BOUND
 Allocated IP: 40.1.1.20 255.255.255.0
 Allocated lease: 259200 seconds, T1: 129600 seconds, T2: 226800 seconds
 DHCP server: 40.1.1.2

# Display verbose DHCP client information.

<Sysname> display dhcp client verbose
Vlan-interface1 DHCP client information:
 Current machine state: BOUND
 Allocated IP: 40.1.1.20 255.255.255.0
 Allocated lease: 259200 seconds, T1: 129600 seconds, T2: 226800 seconds
 Lease from 2005.08.13 15:37:59   to   2005.08.16 15:37:59
 DHCP server: 40.1.1.2
 Transaction ID: 0x1c09322d
 Default router: 40.1.1.2
 Classless static route:
   Destination: 1.1.0.1, Mask: 255.0.0.0, NextHop: 192.168.40.16
   Destination: 10.198.122.63, Mask: 255.255.255.255, NextHop: 192.168.40.16
 DNS server: 44.1.1.11
 DNS server: 44.1.1.12
 Domain name: ddd.com
 Boot server: 200.200.200.200  1.1.1.1
 Client ID: 3030-3066-2e65-3234-
            392e-3830-3438-2d56-
            6c61-6e2d-696e-7465-
            7266-6163-6531
T1 will timeout in 1 day 11 hours 58 minutes 52 seconds.

Table 15: Command output

Field	Description
Vlan-interface1 DHCP client information	Information about the interface acting as the DHCP client.
Current machine state	Current state of the DHCP client: HALT—Indicates that the client stops applying for an IP address. INIT—Indicates the initialization state. SELECTING—Indicates that the client has sent out a DHCP-DISCOVER message in search of a DHCP server and is waiting for the response from DHCP servers. REQUESTING—Indicates that the client has sent out a DHCP-REQUEST message requesting for an IP address and is waiting for the response from DHCP servers. BOUND—Indicates that the client has received the DHCP-ACK message from a DHCP server and obtained an IP address successfully. RENEWING—Indicates that the T1 timer expires. REBOUNDING—Indicates that the T2 timer expires.
Allocated IP	The IP address allocated by the DHCP server.
Allocated lease	The allocated lease time.
T1	The 1/2 lease time (in seconds) of the DHCP client IP address.
T2	The 7/8 lease time (in seconds) of the DHCP client IP address.
Lease from….to….	The start and end time of the lease.
DHCP server	DHCP server IP address that assigned the IP address.
Transaction ID	Transaction ID, a random number chosen by the client to identify an IP address allocation.
Default router	The gateway address assigned to the client.
Classless static route	Classless static routes assigned to the client.
Static route	Classful static routes assigned to the client.
DNS server	The DNS server address assigned to the client.
Domain name	The domain name suffix assigned to the client.
Boot server	PXE server addresses (up to 16 addresses) specified for the DHCP client, which are obtained through Option 43.
Client ID	Client ID.
T1 will timeout in 1 day 11 hours 58 minutes 52 seconds.	How long until the T1 (1/2 lease time) timer times out.

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