Chapter 22 Advanced DHCP Server Properties

Tuning the DHCP Server

Table 22-2 DHCP Log Settings (continued)

Log Setting

 

(Numeric Equivalent)

Description

 

 

client-detail (8)

After every client-class client lookup operation, logs the composite of the

 

data found for the client and its client-class. Useful when setting a

 

client-class configuration and debugging problems in client-class

 

processing.

 

 

client-criteria-processing

Logs whenever a scope is examined to find an available lease or to

(9)

determine if a lease is still acceptable for a client who already has one.

 

Can be very useful when configuring or debugging client-class scope

 

criteria processing. (Causes moderate amount of information to be logged

 

and should not be left enabled as a matter of course.)

 

 

failover-detail (10)

Logs detailed failover activity.

 

 

ldap-query-detail (11)

Logs whenever the DHCP server initiates a query to an LDAP server,

 

receives a response, and retrieves a result or error messages.

ldap-update-detail (12)

Logs whenever the DHCP server initiates an update lease state to the LDAP server, receives a response, and retrieves a result or error messages.

ldap-create-detail (13)

Logs whenever the DHCP server initiates a lease state entry create to the LDAP server, receives a response, and retrieves a result or error messages.

leasequery (14)

Logs a message for every ACK- or NAK-responded lease query packet.

 

 

dropped-waiting-packets

If the value of max-waiting-packetsis non-zero, packets can be dropped

(15)

if the queue length for any IP address exceeds the value. If

 

dropped-waiting-packetsis set, the server logs whenever it drops a

 

waiting packet from the queue for an IP address.

 

no-success-messages (16) Inhibits logging successful outgoing response packets.

 

 

no-dropped-dhcp-packets

Inhibits logging dropped DHCP packets.

(17)

 

 

 

no-dropped-bootp-packets

Inhibits logging dropped BOOTP packets.

(18)

 

 

 

no-failover-activity (19)

Inhibits logging normal activity and some warning messages logged for

 

failover. However, serious error log messages continue to appear.

 

 

activity-summary (20)

Enables logging a summary message every five minutes (useful if the

 

following no- type flags are set), showing the activity in the previous

 

interval (you can adjust this interval using

 

dhcp set activity-summary-interval).

 

 

no-invalid-packets (21)

Inhibits logging invalid packets.

 

 

no-reduce-logging-when-

Inhibits reducing logging when receive buffers reach 66%.

busy (22)

 

 

 

no-timeouts (23)

Inhibits logging timeouts of leases and offers.

 

 

minimal-config-info (24)

Reduces the number of configuration messages in the log.

 

 

no-failover-conflict (25)

Logs conflicts between failover partners.

 

 

 

 

Cisco CNS Network Registrar User’s Guide

 

 

 

 

 

 

OL-6240-02

 

 

22-11

 

 

 

 

 

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Cisco Systems OL-6240-02 manual Dhcp set activity-summary-interval, 22-11

OL-6240-02 specifications

Cisco Systems OL-6240-02 is a highly regarded certification exam that delves into the realm of enterprise networking, particularly focusing on the Cisco Certified Network Professional (CCNP) Routing and Switching track. This particular exam serves as a critical test for network professionals aiming to validate their skills and knowledge in advanced routing technologies and network design.

One of the main features of OL-6240-02 is its emphasis on in-depth understanding of IP routing principles. Candidates are expected to demonstrate proficiency in configuring, maintaining, and troubleshooting complex routing protocols like OSPF (Open Shortest Path First), EIGRP (Enhanced Interior Gateway Routing Protocol), and BGP (Border Gateway Protocol). This includes comprehending routing algorithms, path selection, and the implementation of route redistribution, which are essential for optimizing network performance.

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