DHCP – Router Switch Blog

Cisco ASA with Firepower Services, Setup Guide-Part3

Posted on June 30, 2017 by RouterSwitch Tech | 0 Comments

Set up your ASA easily. When you finish your former big two steps “Connecting PC to ASA” and “Installing ASDM”. Follow the third step “Configuring ASA”. Configuring ASA 1. Launching ASDM Now you can launch the Cisco ASDM with the…

Cisco ASA with Firepower Services, Setup Guide-Part2

Posted on June 30, 2017 by RouterSwitch Tech | 0 Comments

In this article, let’s continue to set up your ASA with Firepower Services. In the last part we shared how to connect PC to ASA. In this part we will tell you how to install ASDM. Installing ASDM To configure…

Understanding DHCP Snooping Configuration

Posted on March 28, 2016 by RouterSwitch Tech | 0 Comments

We shared some topics about the DHCP before, such as the Five Things You Should Know About DHCP Snooping, How to Configure DHCP Snooping, How to Configure DHCP Snooping in a Cisco Catalyst Switch, DHCP Option 150 & DHCP Option…

How to Start up a Cisco IP Phone?

Posted on September 30, 2014 by RouterSwitch Tech | 0 Comments

How to start up a Cisco IP Phone? It’s not too difficult to handle it. In the following part we will share the main steps and tips while starting up a Cisco IP Phone. The figure below provides an overview…

Cisco IOS Updates Fix Eight Denial of Service Vulnerabilities

Posted on September 30, 2013 by RouterSwitch Tech | 0 Comments

This week Cisco has patched 8 vulnerabilities that could impact the availability of devices using various versions of its IOS software. IOS is a multitasking operating system that combines networking and telecommunications functions and is used on many of the…

Q&A: How to Troubleshoot ASA, PIX, and FWSM?

Posted on August 24, 2013 by RouterSwitch Tech | 0 Comments

In this article we collected the answers for the questions on the Topic-Troubleshooting ASA, PIX, and FWSM. Note: It was provided by Kureli Sankar, which is available in the Ask The Expert section of Cisco Support Community. Q&A: How to Troubleshoot ASA, PIX, and…

Two Smart Ways to Configure Cisco IP Phones

Posted on July 16, 2013 by RouterSwitch Tech | 0 Comments

Before you install a Cisco Unified IP phone, you must decide how to configure the phone in your network. Then you can install the phone and verify its functionality. There are two smart ways to configure Cisco IP Phones provided by proficient…

DHCP Relay on the Nexus7000/NXOS Vs. IP Helper on the 6500/IoS

Posted on May 20, 2013 by RouterSwitch Tech | 0 Comments

IP helper (now DHCP relay) works differently on the Nexus 7000 than on the Cisco 6500. The N7K imposes a VACL to filter local DHCP broadcast traffic, under the assumption that you’d be using DHCP relay when there is no local DHCP…

Most Frequent Interview Questions for Network Engineers

Posted on April 28, 2013 by RouterSwitch Tech | 0 Comments

In the last article we listed 100 interview questions for network engineers. May be some of them are not often asked. Again, here we gathered most frequently asked interview questions for network engineers in most of the multinational companies in India. Most Frequent Interview Questions for…

DHCP Option 150 & DHCP Option 66

Posted on March 6, 2013 by RouterSwitch Tech | 0 Comments

Here we will provide an understanding for configuring option 150 and to use option 66 for EX Switches. DHCP Option 150 is Cisco proprietary. Option 66 is an IEEE standard. PROBLEM OR GOAL: Solution: For Cisco phones IP addresses can…

FAQ: What Network Users Care about IPv6?

Posted on December 11, 2012 by RouterSwitch Tech | 0 Comments

This article contains Frequently Asked Questions (FAQ’s) about Internet Protocol Version 6(IPv6). Q. How to limit clients getting an IPv6 address without using a DHCP server ? A. Use the command“ipv6nd prefix <prefix> no-advertise”.This will set a bit in theIPv6 NA…

Five Things You Should Know About DHCP Snooping

Posted on November 6, 2012 by RouterSwitch Tech | 0 Comments

DHCP snooping allows the switch to monitor and control DHCP messages received from untrusted devices connected to the switch. When DHCP snooping is enabled, the system builds and maintains a database of valid IP-address/MAC-address (IP-MAC) bindings called the DHCP snooping…

Cisco CCNP: How to Configure IP Source Guard?

Posted on September 10, 2012 by RouterSwitch Tech | 0 Comments

IP Source Guard is a per-interface traffic filter that permits IP traffic only when the IP address and MAC address of each packet matches one of two sources of IP and MAC address bindings: •Entries in the Dynamic Host Configuration…

How to Configure DHCP Snooping in a Cisco Catalyst Switch?

Posted on August 31, 2012 by RouterSwitch Tech | 0 Comments

Here we go, with the configuration of DHCP snooping on a Cisco Switch. This feature protects the network by allowing the Cisco Switches to accept DHCP response message only from the authorized servers connected to the trusted interfaces in a…

How to Configure DHCP Snooping?

Posted on August 28, 2012 by RouterSwitch Tech | 0 Comments

DHCP snooping is a security feature intended to prevent rogue DHCP server from sending malicious DHCP replies. When DHCP snooping is enabled, the switch intercept all the DHCP requests, and discards DHCP replies coming from “untrusted” ports. The offending switch…

How to Configure DHCP on a Cisco Router or Cisco Switch?

Posted on April 27, 2012 by RouterSwitch Tech | 0 Comments

If you want to configure Dynamic Host Configuration Protocol (DHCP) on PC clients, you currently have multiple options to choose for your DHCP server. One of the more common ways to accomplish this is by using a Windows or Linux…

DHCP & DHCP Operation

Posted on March 6, 2012 by RouterSwitch Tech | 0 Comments

DHCP (Dynamic Host Configuration Protocol) works in a client/server mode. DHCP enables clients on an IP network to obtain or lease IP address or configuration from a DHCP server. This reduces workload when managing a large network. DHCP protocol is…

Cisco Catalyst 4500 Switch, How to Configure a DHCP Relay on It?

Posted on January 3, 2012 by RouterSwitch Tech | 0 Comments

Dynamic Host Configuration Protocol (DHCP) is a protocol for assigning dynamic IP addresses to hosts on a local network. DHCP also delivers TCP/IP configuration parameters such as the subnet mask and the default router. DHCP simplifies network administration because the…