64. QUESTION 201:which command can you enter to troubleshoot the failure of a...

smallant_88

QUESTION 201:which command canyou enter to troubleshoot the failure of address assignment ?

A. show ip dhcp database

B. show ip dhcp pool

C. show ip dhcp import

D. show ip dhcp server statistics

Explanation

Correct Answer: B

如题，答案选B，但不是很理解，搜集的参考信息如下，这样为啥要选B呢，A和B也是正确命令吧？(C没有这个命令？没查到过) 谁能贡献下show ip dhcp database命令的详细输出？

Verifying the DHCP Address Pool Configuration

SUMMARY STEPS

1.    enable

2.    show ip dhcp pool [name]  // Displays information about DHCP address pools总体情况

3.    show ip dhcp binding [address] //显示IP地址与MAC地址绑定情况，显示明细

·       Use the show ip dhcp binding commandto display the IP addresses that have already been assigned. Verify that theaddress pool is not exhausted. If necessary, recreate the pool to create alarger pool of addresses.

·       Use the show ip dhcp binding commandto display the lease expiration date and time of the IP address of the host.

4.    show ip dhcp conflict [address] //显示有冲突记录的地址明细日志信息

5.    show ip dhcp database [url] //Displays recent activity on the DHCP database.

6.    show ip dhcp server statistics [type-number] // Displays count information about server statistics andmessages sent and received 显示DHCP服务器各种数据包的统计信息

1、showip dhcp pool  (pool name) 显示如下：
Utilization mark(high/low)    : 100 / 0
Subnet size (first/next)       : 0 / 0
Total addresses               : 254
Leased addresses              : 92
Excluded addresses             : 57
Pending event                 : none
1 subnet is currently in the pool :
Current index        IP address range                  Leased/Excluded/Total
172.16.1.129         172.16.1.1      - 172.16.1.254      92    /57    / 254

smallant_88

A和D也是正确命令,之前敲错了

rapeepat41

sana3

wu210064

学习了