Monitoring DHCP Service Statistics
A J Series or SRX Series device can operate as a Dynamic Host Configuration Protocol (DHCP) server. To view information about global scope and DHCP service statistics, select Monitor>Services>DHCP>Statistics in the J-Web interface, or enter the following CLI commands:
- show system services dhcp global
- show system services dhcp statistics
Table 227 summarizes the output fields in DHCP displays in the J-Web interface.
Table 227: Summary of DHCP Output Fields
Field | Values | Additional Information |
|---|---|---|
| Global tab | ||
Name | This column displays the following information:
| |
Value | Displays the value for each of the parameters in the Name column. | |
| Bindings tab | ||
Allocated Address | List of IP addresses the DHCP server has assigned to clients. | |
MAC Address | Corresponding media access control (MAC) address of the client. | |
Binding Type | Type of binding assigned to the client: dynamic or static. | DHCP servers can assign a dynamic binding from a pool of IP addresses or a static binding to one or more specific IP addresses. |
Lease Expires | Date and time the lease expires, or never for leases that do not expire. | |
| Pools tab | ||
Pool Name | Subnet on which the IP address pool is defined. | |
Low Address | Lowest address in the IP address pool. | |
High Address | Highest address in the IP address pool. | |
Excluded Addresses | Addresses excluded from the address pool. | |
| Clients tab | ||
Interface Name | Name of the logical interface. | |
Hardware Address | Vendor identification. | |
Status | State of the client binding. | |
Address Obtained | IP address obtained from the DHCP server. | |
Update Server | Indicates whether server update is enabled. | |
Lease Obtained | Date and time the lease was obtained. | |
Lease Expires | Date and time the lease expires. | |
Renew | Reacquires an IP address from the server for the interface. When you click this option, the command sends a discover message if the client state is INIT and a renew request message if the client state is BOUND. For all other states it performs no action. | |
Release | Clears other resources received earlier from the server, and reinitializes the client state to INIT for the particular interface. | |
| Conflicts tab | ||
Detection Time | Date and time the client detected the conflict. | |
Detection Method | How the conflict was detected. | Only client-detected conflicts are displayed. |
Address | IP address where the conflict occurs. | The addresses in the conflicts list remain excluded until you use the clear system services dhcp conflict command to manually clear the list. |
| DHCP Statistics | ||
| Relay Statistics tab | ||
Packet Counters | Displays the number of packet counters. | |
Dropped Packet Counters | Graphically displays the number of dropped packet counters. | |
| Statistics tab | ||
Packets dropped | Total number of packets dropped and the number of packets dropped due to a particular condition. | |
Messages received | Number of BOOTREQUEST, DHCPDECLINE, DHCPDISCOVER, DHCPINFORM, DHCPRELEASE, and DHCPREQUEST messages sent from DHCP clients and received by the DHCP server. | |
Messages sent | Number of BOOTREPLY, DHCPACK, DHCPOFFER, and DHCPNAK messages sent from the DHCP server to DHCP clients. | |