david davis ccie

Articles

Configure DHCP on a Cisco router or switch

May 5, 2005 7:00am PDT

Many administrators forget—or don't even realize—that they can configure Dynamic Host Configuration Protocol (DHCP) on Cisco IOS routers and switches. David Davis discusses the pros and cons of...

43 Latest comment by thedzaho

Articles

Properly set a Cisco router's clock and time zone

October 25, 2006 6:17pm PDT

Does setting the correct time on a router really matter? Actually, it does. In this edition of Cisco Routers and Switches, David Davis reviews the benefits of setting the correct time on your...

13 Latest comment by ciscoman84

Articles

Understand the levels of privilege in the Cisco IOS

April 14, 2005 7:00am PDT

Many network administrators who work with the Cisco IOS never bother to think about the level of privilege they're using or what that level means. However, the Cisco IOS actually offers 16...

8 Latest comment by eventhefield

Articles

Synchronize a Cisco router's clock with Network Time Protocol (NTP)

May 26, 2005 7:00am PDT

It's critical that all devices on an organization's network display the accurate time and date. If they don't, things can go wrong in a hurry. David Davis explains why Cisco devices need to use...

6 Latest comment by m_ramadan85@...

Articles

Configure SSH on your Cisco router

September 22, 2005 7:00am PDT

Most IT pros know that using Telnet to manage routers, switches, and firewalls is not exactly a security best practice. Instead, the accepted alternative to Telnet's lack of security is Secure...

11 Latest comment by aw_willis@...

Articles

Get to know your logging options in the Cisco IOS

June 15, 2006 9:31pm PDT

Knowing how to properly use logging is a necessary skill for any network administrator, and the Cisco IOS offers many options for logging. To help bring you up to speed, David Davis discusses how...

6 Latest comment by Polypeter

Articles

Cisco administration 101: Five interface commands you should know

August 10, 2006 7:29pm PDT

Whether you're a seasoned admin or a newbie, it's always a good idea to review from time to time. When working with routers and switches, you usually don't have to configure an interface using the...

12 Latest comment by Syed Abdul Ali

Articles

Set up Port Address Translation (PAT) in the Cisco IOS

May 14, 2002 7:00am PDT

NAT is a valuable tool for admins, both for conserving public IP addresses and securing internal resources. Several variations of NAT are available, including its cousin PAT. See the differences...

3 Latest comment by jatin.kapoor@...

Articles

Clarifying the Cisco IOS bandwidth command

July 13, 2006 8:13pm PDT

David Davis has recently noticed that there seems to be some confusion out there about Cisco's bandwidth command, and he wants to set the record straight. In this edition of Cisco Routers and...

17 Latest comment by cw@...

Blog Post

Cisco retires CCIE Voice but then rethinks it

June 12, 2013 4:32am PDT

Cisco has announced the new cert standard for telecom, unified communications and video professionals. But this also means the retirement of the CCIE Voice certification.

Articles

Configure QoS on your Cisco router with this template

November 16, 2006 7:48pm PST

Using quality of service (QoS) on Cisco network devices helps provide both bandwidth and priority to certain types of network traffic. In this edition of Cisco Routers and Switches, David Davis...

35 Latest comment by nur_raziel

Blog Post

Cisco's CCIE is no longer the biggest cash cow of IT certification

March 7, 2008 12:17pm PST

Cisco's legendary CCIE is no longer the most valuable certification for IT professionals, according to TechRepublic's 2008 IT Skills and Salary Report. See what certification has replaced it and...

36 Latest comment by io_zen@...

Articles

Cisco IOS access lists: 10 things you should know

June 16, 2005 7:00am PDT

Access control lists (ACLs) are a fundamental part of working with routers. How much do you know about managing these vital gatekeepers? David Davis lists 10 things every administrator should know...

19 Latest comment by proshantoa@...

Articles

Lock down Cisco switch port security

October 5, 2006 5:36pm PDT

One way to boost network security is to use Cisco's Port Security feature to lock down switch ports. In this edition of Cisco Routers and Switches, David Davis introduces you to the basics of port...

32 Latest comment by gballing@...

Articles

Get to know the Cisco IOS show interfaces command

August 23, 2006 6:44pm PDT

If you don't know what's really going on with the interfaces on your Cisco routers, then you likely don't know which changes you need to make. In this edition of Cisco Routers and Switches, David...

6 Latest comment by ramini

Articles

Cisco administration 101: Understanding Ethernet MAC addresses

October 12, 2006 8:43pm PDT

While you're probably familiar with Ethernet MAC addresses, how much do you know about working with them in the Cisco IOS? In this edition of Cisco Routers and Switches, David Davis tells you how...

7 Latest comment by wesleyfry@...

Articles

Know how to use Cisco IOS file system commands

February 16, 2006 8:00am PST

Working with the files and directories on the Cisco IOS file system (Cisco IFS) involves using the same types of commands as when manipulating files in Windows from the DOS command prompt. To help...

3 Latest comment by basheershabazz@...

Articles

What's the best Cisco router configuration and management tool?

April 25, 2007 2:35pm PDT

It's rare to be able to accomplish everything you need using only the Cisco IOS; the reality is that additional tools are necessary. Because of the plethora of tools available, the challenge is...

32 Latest comment by FAST!!!

Articles

Block access to a Web site using the Cisco IOS

September 14, 2006 8:55pm PDT

A TechRepublic member recently e-mailed David Davis and asked him how to block a specific Web site using the Cisco IOS. In this edition of Cisco Routers and Switches, David Davis answers the...

26 Latest comment by Exersavia

Articles

How to use BGP to achieve Internet redundancy

March 11, 2002 8:00am PST

Internet access is becoming more and more critical for handling everyday business. To ensure Internet redundancy and optimum performance, organizations may want to consider implementing BGP...

8 Latest comment by demomsky_09