Specifications

Command Reference
28
Cisco IOS Release 12.0(3)T
Following is sample output for the show dhcp server command:
uBR904# show dhcp server
DHCP server: ANY (255.255.255.255)
Leases: 1
Offers: 1 Requests: 2 Acks: 1 Naks: 0
Declines: 0 Releases: 0 Bad: 0
TFTP Server Name: SOHOSERVER
TIME0: 1.2.0.250, TIME1: 0.0.0.0
Subnet: 255.255.255.0
Table 3 describes the significant fields shown in the display.
Renewal Time interval (in seconds) from address assignment until the client transitions to the
renewing state. When the renewal (T1) time expires, the client sends a unicast
dhcprequest message to the server to extends its lease. The default value of this timer is
0.5 times the duration of the lease.
Rebind Time interval (in seconds) from address assignment until the client transitions to the
rebinding state and sends a broadcast dhcprequest message to any DHCP server to
extends its lease. The default value of this timer (T2) is 0.875 times the duration of the
lease.
Temp default-gateway addr IP address of the router closest to this client on the network.
Next timer fires after Time in hours, minutes, and seconds until the next timer expires.
Retry count Number of times the client has sent any message to the DHCP server -- most likely a
request message to extend its lease. When the lease is renewed, the Retry count is reset
to 0.
Client-ID MAC address (with optional media type code) that uniquely identifies the client on the
subnet for binding lookups.
Table 3 Show DHCP Server Field Descriptions
Field Description
DHCP server MAC address used by the DHCP server.
Leases Number of current leased IP addresses.
Offers Number of offers for an IP address sent to a proxy-client from the server.
Requests Number of requests for an IP address to the server.
Acks Number of ‘acknowledge’ messages sent by the server to the proxy-client.
Naks Number of ‘not acknowledge’ messages sent by the server to the proxy-client.
Declines Number of offers from the server that have been declined by the proxy-client.
Releases Number of times IP addresses have been relinquished gracefully by the client.
Bad Number of bad packets received due to wrong length, wrong field type, or other causes.
TFTP Server Name Name (if any) configured for the server providing TFTP downloads to the cable modem.
TIME0 IP address of the primary Time of Day (TOD) server.
TIME1 IP address of the secondary Time of Day (TOD) server.
Subnet Subnet containing the DHCP server.
Table 2 Show DHCP Lease Field Descriptions (Continued)
Field Description