Displays the IP helper addresses of DHCP servers configured for all static VLANS in the switch or on a specified
VLAN, regardless of whether the DHCP relay feature is enabled. The
vlan
vlan-id
parameter specifies a
VLAN ID number.
Example
The following command lists the currently configured IP Helper addresses for VLAN 1.
Displaying IP helper addresses
switch(config)# show ip helper-address vlan 1
IP Helper Addresses
IP Helper Address
-----------------
10.28.227.97
10.29.227.53
Viewing the hop count setting
To verify the current setting for increasing the hop count in DHCP requests, enter the
show dhcp-relay
command. The current setting is displayed next to DHCP Request Hop Count Increment.
Displaying hop count status
switch# show dhcp-relay
Status and Counters - DHCP Relay Agent
DHCP Relay Agent Enabled : Yes
DHCP Request Hop Count Increment: Disabled
Option 82 Handle Policy : Replace
Remote ID : MAC Address
Client Requests Server Responses
Valid Dropped Valid Dropped
-------- --------- -------- ---------
1425 2 1425 0
Viewing the MAC address for a routing switch
To view the MAC address for a given routing switch, execute the
show system-information
command in the
CLI.
Using the CLI to view the switch MAC address
switch(config)# show system information
Status and Counters - General System Information
System Name : switch
System Contact :
System Location :
MAC Age Time (sec) : 300
Time Zone : 0
Daylight Time Rule : None
Software revision : K.15.06.0000x Base MAC Addr : 00110a-a50c20
ROM Version : K.15.13 Serial Number : LP713BX00E
Chapter 14 Dynamic Host Configuration Protocol
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