Cisco Cisco Packet Data Interworking Function (PDIF) Prospecto
DHCP Service Configuration Mode Commands
dhcp detect-dead-server ▀
Cisco ASR 5x00 Command Line Interface Reference ▄
3275
dhcp detect-dead-server
Configures the number of consecutive communication failures that could occur before the system marks a DHCP server
as down.
as down.
Product
GGSN
ASN-GW
HA
P-GW
SAEGW
Privilege
Security Administrator, Administrator
Mode
Exec > Global Configuration > Context Configuration > DHCP Service Configuration
configure > context context_name > dhcp-service service_name
Entering the above command sequence results in the following prompt:
[context_name]host_name(config-dhcp-service)#
Syntax
dhcp detect-dead-server consecutive-failures max_number
consecutive-failures
max_number
Specifies the number of failures that could occur before marking a DHCP server as down as an integer from 1
through 1000. Default: 5
through 1000. Default: 5
Usage
This command works in conjunction with the max-retransmissions parameter to set a limit to the number of
communication failures that can occur with a configured DHCP server.
The max-retransmissions parameter limits the number of attempts to communicate with a server. Once that
limit is reached, the system treats it as a single failure. This parameter limits the number of consecutive
failures that can occur before the system marks the server as down and communicate with the server of next
highest priority.
If all of the configured servers are down, the system ignores the detect-dead-server configuration and attempt
to communicate with highest priority server again.
If the system receives a message from a DHCP server that was previously marked as down, the system
immediately treats it as being active.
communication failures that can occur with a configured DHCP server.
The max-retransmissions parameter limits the number of attempts to communicate with a server. Once that
limit is reached, the system treats it as a single failure. This parameter limits the number of consecutive
failures that can occur before the system marks the server as down and communicate with the server of next
highest priority.
If all of the configured servers are down, the system ignores the detect-dead-server configuration and attempt
to communicate with highest priority server again.
If the system receives a message from a DHCP server that was previously marked as down, the system
immediately treats it as being active.
Example
The following command configures the system to allow
8
consecutive communication failures with a DHCP
server before it marks it as down:
dhcp detect-dead-server consecutive-failures 8