Displaying DHCP-relay Statistics for all Interfaces
About this task
Display DHCP-relay statistics for all interfaces to manage network performance.
Note
Slot and port information can differ depending on hardware platform.
Procedure
Example
Switch:1>show ip dhcp-relay counters option82 ================================================================================ DHCP Counters Option82 - GlobalRouter ================================================================================ FOUND DROP CIRCUIT ADD REMOVE REMOTE ADD REMOVE INTERFACE OPT82 PKT ID CIRC CIRC ID REMOTE REMOTE -------------------------------------------------------------------------------- Port 1/12 0 0 395 0 0 00:24:7f:9d:0a:00 0 0 Vlan40 0 0 2088 0 0 00:24:7f:9d:0a:01 0 0
Variable Definitions
Use the data in the following table to use the show ip dhcp-relay counters command.
Variable |
Value |
---|---|
vrf WORD<0-16> |
Specifies a VRF instance by the VRF name. |
vrfids WORD<0-512> |
Specifies the ID of the VRF. |
Job Aid
The following table explains the output from the show ip dhcp-relay counters option82 command.
Heading |
Description |
---|---|
INTERFACE |
Shows the VLAN or port associated with the respective relay interface. |
IP ADDR |
Shows the IP address of the respective relay interface. |
FOUND OPT82 |
Shows the number of packets received that included option82. This number increases every time a valid DHCP packet that contains option82 arrives on the respective relay interface. |
DROP PKT |
Shows the number of packets the interface did not forward. This number increases every time a DHCP packet that has option82 arrives on a relay interface but is not forwarded on the interface towards the server; the path towards the relay can include additional DHCP relays. To determine the cause of the drop, you must enable trace on level 170. |
CIRC ID |
Show the circuit ID associated with the respective interface. |
ADD CIRC |
Shows on how many packets the circuit ID was inserted for that interface. This number increases every time the relay adds a circuit id sub-option in a generated option82 packet to send on an interface towards the server. If you expect this value to increase but it does not, and the interface does not drop a packet, it is possible the packet does not have enough space to insert the option. You must enable trace on level 170 to determine the cause. |
DEL CIRC |
Shows on how many packets the circuit id was removed for that interface. This number increases every time the relay removes a circuit id sub-option from an option82 packet received on a interface towards the server. |
REMOTE ID |
Shows the remote ID associated with the respective interface. The value is the MAC address of the interface. |
ADD REMID |
Shows on how many packets the remote ID was inserted for that interface. This number increases every time the relay adds a remote id sub-option in a generated option82 packet to send through an interface towards a server. If you expect this value to increase but it does not, and the interface does not drop a packet, it is possible the packet does not have enough space to insert the option. You must enable trace on level 170 to determine the cause. |
DEL REMID |
Shows on how many packets the remote ID was removed for that interface. This number increases every time the relay removes a remote id sub-option from an option82 packet received on an interface towards a server. |