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DHCP

 

Monitoring DHCP Client Bindings

Purpose

View information about DHCP client bindings.

Action

Select Monitor>Services>DHCP>Binding in the J-Web user interface, or enter the show system services dhcp binding command.

Table 96 summarizes the key output fields in the DHCP client binding displays.

Table 96: Summary of Key DHCP Client Binding Output Fields

Field

Values

Additional Information

IP Address

List of IP addresses the DHCP server has assigned to clients.

Hardware Address

Corresponding media access control (MAC) address of the client.

Type

Type of binding assigned to the client: dynamic or static.

Lease Expires at

Date and time the lease expires, or never for leases that do not expire.

Monitoring DHCP Server

Purpose

Use the monitoring functionality to view information about dynamic and static DHCP leases, conflicts, pools, and statistics.

Action

To monitor DHCP server, select Monitor>DHCP>DHCP Server in the J-Web user interface.

Meaning

Table 97 summarizes key output fields in the events page.

Table 97: DHCP Server Monitoring Page

Field

Value

Additional Information

Binding Information

IP address

Specifies the IP address of the DHCP server.

 

Session id

Specifies the Session ID of the subscriber session.

Hardware address

Specifies the Hardware address of the DHCP server.

Expires

Specifies the number of seconds in which the lease expires.

State

State of the address binding table on the extended DHCP local server:

  • BOUND—Client has an active IP address lease.

  • FORCERENEW—Client has received the FORCERENEW message from the server.

  • INIT—Initial state.

  • RELEASE—Client is releasing the IP address lease.

  • RENEWING—Client is sending a request to renew the IP address lease.

  • REQUESTING—Client is requesting a DHCP server.

  • SELECTING—Client is receiving offers from DHCP servers.

Interface

Specifies the interface on which the request was received.

Interface Details

Specifies the interface on which the DHCP server is configured.

Clear All Bindings

Clears all the binding information.

Statistics Information

Sent

Number of BOOTREPLY, DHCPOFFER, DHCPACK, DHCPNAK, DHCPFORCERENEW, DHCPLEASEDUNASSIGNED, DHCPLEASEUNKNOWN, AND DHCPEASEACTIVE messages sent from the DHCP server to DHCP clients.

These information are displayed in a bar chart.

Received

Number of BOOTREQUEST, DHCPDECLINE, DHCPDISCOVER, DHCPINFORM, DHCPRELEASE, DHCPREQUEST, DHCPLEASEQUERY, and DHCPBULKLEASE messages sent from DHCP clients and received by the DHCP server.

These information are displayed in a bar chart.

Dropped Packet Counters

Displays the number of dropped packet counters in a piechart.

Clear All Statistics

Clears all the collected statistical information.

Monitoring DHCP Relay

Purpose

Use the monitoring functionality to view information about dynamic and static DHCP leases, conflicts, pools, and statistics.

Action

To monitor DHCP relay, select Monitor>DHCP>DHCP Relay in the J-Web user interface.

Meaning

Table 98 summarizes key output fields in the events page.

Table 98: DHCP Relay Monitoring Page

Field

Value

Additional Information

Binding Information

IP address

Specifies the IP address of the DHCP relay.

 

Session id

Specifies the Session ID of the subscriber session.

Hardware address

Specifies the Hardware address of the DHCP relay.

Expires

Specifies the number of seconds in which the lease expires.

State

State of the address binding table on the extended DHCP local server:

  • BOUND—Client has an active IP address lease.

  • FORCERENEW—Client has received the FORCERENEW message from the server.

  • INIT—Initial state.

  • RELEASE—Client is releasing the IP address lease.

  • RENEWING—Client is sending a request to renew the IP address lease.

  • REQUESTING—Client is requesting a DHCP server.

  • SELECTING—Client is receiving offers from DHCP servers.

Interface

Specifies the interface on which the request was received.

Interface Details

Specifies the interface on which the DHCP relay is configured.

Clear All Bindings

Clears all the binding information.

Statistics Information

Sent

Number of BOOTREPLY, DHCPOFFER, DHCPACK, DHCPNAK, DHCPFORCERENEW, DHCPLEASEDUNASSIGNED, DHCPLEASEUNKNOWN, AND DHCPEASEACTIVE messages sent from the DHCP server to DHCP clients.

These information are displayed in a bar chart.

Received

Number of BOOTREQUEST, DHCPDECLINE, DHCPDISCOVER, DHCPINFORM, DHCPRELEASE, DHCPREQUEST, DHCPLEASEQUERY, and DHCPBULKLEASE messages sent from DHCP clients and received by the DHCP server.

These information are displayed in a bar chart.

Dropped Packet Counters

Displays the number of dropped packet counters in a piechart.

Clear All Statistics

Clears all the collected statistical information.