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

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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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Contents 22-1 Configuring BootpAbout Bootp 22-2 Enabling Bootp for ScopesSetting Advanced Dhcp Server Parameters Moving or Decommissioning Bootp ClientsUsing Dynamic Bootp Bootp Relay22-4 Advanced Parameter Action Description22-5 22-6 Deferring Lease Extensions22-7 Integrating Windows System Management Servers22-8 Using Extensions to Affect Dhcp Server Behavior22-9 Unix22-10 Tuning the Dhcp Server22-11 Dhcp set activity-summary-interval22-12 Configuring Virtual Private Networks Using Dhcp22-13 Typical Virtual Private Networks22-14 Creating Virtual Private Networks22-15 Then22-16 VPN Usage22-17 Configuring Dhcp Subnet Allocation22-18 22-19 Setting Dhcp ForwardingVPN and Subnet Allocation Tuning Parameters 22-20

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.

The exam also covers the characteristics of network security and infrastructure, where candidates must exhibit knowledge of implementing security protocols and best practices to safeguard network communications. This includes configuring virtual private networks (VPNs), utilizing access control lists (ACLs), and applying encryption techniques to secure data in transit.

Another crucial technology tested in OL-6240-02 is Quality of Service (QoS). Professionals must be adept at configuring QoS mechanisms to prioritize traffic, ensuring that critical applications receive the necessary bandwidth and latency requirements. This is increasingly important as businesses rely on a multitude of applications that have varying performance needs.

Cisco's emphasis on network automation and programmability is also a focal point of this certification. Candidates are expected to be familiar with using Cisco's software-defined networking (SDN) solutions and automation tools, which are essential for modern network management. This involves understanding how to leverage APIs and modeling tools to streamline network operations and enhance efficiency.

To succeed in OL-6240-02, candidates should possess a solid foundation in network fundamentals and have hands-on experience with Cisco devices. The certification not only validates expertise but also prepares professionals for real-world challenges in designing, implementing, and troubleshooting enterprise networks. Overall, OL-6240-02 is a stepping stone for network professionals seeking higher-level certifications and career advancements in the ever-evolving field of networking.