Displaying And Debugging Dhcp - 3Com 3C13636 Configuration Manual

3Com Router 3000 Ethernet Family
Configuration Guide
By default, DHCP client is disabled.
Note the following:
After configured to obtain an IP address through DHCP, an interface cannot be
configured with any subaddress. That is, the command ip address dhcp-alloc is
in conflict with the command ip address ip-address mask sub, so you can only
use one of them.
When one interface on a DHCP client goes up after obtaining an IP address from a
DHCP server configured with the
appears in the routing table on the client, with the next hop being the gateway
specified by the command. If the DHCP client is connected to multiple DHCP
servers configured with different gateways, multiple equal-cost default routes may
appear in its routing table with their next hops being different gateways, for
example,
[Router] display ip routing-table
Routing Table: public net
Destination/Mask
0.0.0.0/0
When an interface with frame relay encapsulation is functioning as the DHCP
client, the interface adopts frame relay dynamic address mapping or
broadcast-mode frame relay static address mapping.
Currently, virtual Ethernet interfaces support DHCP server but not DHCP client.

9.8 Displaying and Debugging DHCP

When the aforementioned configurations are completed, use the display command in
any views to show DHCP running status, for the purpose of checking configuration
information.
Using the debugging command in user view, you can enable DHCP debugging.
I. Displaying and debugging DHCP server
Table 9-48 Display and debug DHCP
Display free address information in
DHCP address pool
Display
information
Protocol
DHCPDEF
Operation
in-conflict DHCP address
3Com Corporation
gateway-list command, a default route entry
Pre Cost Nexthop
255 0 23.23.0.2
30.30.0.3
display dhcp server free-ip
display dhcp server conflict { ip
ip-address | all }
9-42
Chapter 9 DHCP Configuration
Interface
Ethernet2/1.1
Serial3/0:0
Command