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756 CHAPTER 56: DHCP DEBUGGING COMMANDS
// The DHCP server receives a response from a client at 22.0.0.1, which indicates
the IP address is in use.
*0.278406 Sysname DHCPS/7/DHCPS_DEBUG_COMMON:
DHCPServer: Sending ICMP ECHOREQUEST to target IP: 22.0.0.2.
// Checking whether the IP address 22.0.0.2 is in use
*0.278406 Sysname DHCPS/7/DHCPS_DEBUG_COMMON:
DHCPServer: Assign Free Lease from global pool.
*0.279016 Sysname DHCPS/7/DHCPS_DEBUG_COMMON:
DHCPServer: ICMP Timeout!
*0.279016 Sysname DHCPS/7/DHCPS_DEBUG_COMMON:
DHCPServer: ICMP detecting finished. The target IP can be used for d
hcp allocation.
// No ICMP reply is received from 22.0.0.2 after the timer expires, which indicates
the IP address can be used for allocation.
*0.279016 Sysname DHCPS/7/DHCPS_DEBUG_PACKET:
Tx, interface Vlan-interface1
Message type: reply
Hardware type: 1, Hardware address length: 6
Hops: 0, Transaction ID: 4281385283
Seconds: 0, Broadcast flag: 0
Client IP address: 0.0.0.0 Your IP address: 22.0.0.2
Server IP address: 0.0.0.0 Relay agent IP address: 22.0.0.1
Client hardware address: 00e0-fc14-1601
Server host name: Not Configured, Boot file name: Not Configured
DHCP message type: DHCP Offer
// A DHCP-OFFER message containing the IP address 22.0.0.2 was sent to the
DHCP client.
*0.279016 Sysname DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer: Send DHCPOFFER to 00e0.fc14.1601-Vlan-interface2 Offer I
P=> 22.0.0.2 via 22.0.0.1.
*0.279172 Sysname DHCPS/7/DHCPS_DEBUG_COMMON:
DHCPServer: Receive DHCPREQUEST from 00e0.fc14.1601-Vlan-interface2
via 22.0.0.1.
*0.279172 Sysname DHCPS/7/DHCPS_DEBUG_PACKET:
Rx, interface Vlan-interface1
Message type: request
Hardware type: 1, Hardware address length: 6
Hops: 1, Transaction ID: 2294688324
Seconds: 0, Broadcast flag: 0
Client IP address: 0.0.0.0 Your IP address: 0.0.0.0
Server IP address: 0.0.0.0 Relay agent IP address: 22.0.0.1
Client hardware address: 00e0-fc14-1601
Server host name: Not Configured, Boot file name: Not Configured
DHCP message type: DHCP Request
// A DHCP-REQUEST message received
*0.279172 Sysname DHCPS/7/DHCPS_DEBUG_COMMON:
DHCPServer: Acknowledge the DHCPREQUEST message!
*0.279172 Sysname DHCPS/7/DHCPS_DEBUG_PACKET:
Tx, interface Vlan-interface1