Network technologies and trends


October 12, 2008  5:17 AM

How to configure SNMPv3 in a Cisco Catalyst Switch – Series 1

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

Configuring SNMP Version 3 in a Cisco Catalyst Switch is bit more complicated compared to SNMP v1 and v2.  But after configuring SNMPv3 you can relax as the SNMPv3 provides more security by adding authentication (username and password) as well as encryption to the protocol.  

What is SNMPv3 ?Simple Network Management Protocol version 3. The specification for this Full Standard protocol is published in RFCs 3410 and 3418. SNMPv3 provides a Full Standard administrative framework (authorization, access control, etc.) and a remote configuration/administration MIB. Also check the SNMPv3 documentation from Cisco Systems. 

How to configure SNMPv3 in a Cisco Catalyst Switch ? 

First we begin with configuration of SNMPv3 on the Cisco Catalyst Switch by creating a SNMP “view”. A “view” defines what information can be accessed by the SNMP user/group when they query the SNMPv3 enabled  Cisco Catalyst Switch.  In the below example we will create “view” called ITKEView. We will enable “system” , “internet” and  “interfaces” SNMP OIDS on the Cisco Catalyst Switch. 

ITKE(config)# snmp-server view ITKEView internet includedITKE(config)# snmp-server view ITKEView system includedITKE(config)# snmp-server view ITKEView interfaces included 

To be continued in next series

October 6, 2008  7:34 AM

Things to be considered before upgrading an IOS in a Cisco 6500 Series Switch with SUP720- Series 3

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

In the second series I  was talking about the Compact flash memory, now let’s proceed further, one more key thing you must consider before starting an IOS upgrade for a Cisco Catalyst 6513 Switch with Supervisor Engine SUP720 is the redundant power supply.  Make sure the Cisco Catalyst 6513 Switch is installed with the redundant power supply and they are connected to two different power sources.  Suppose one power source fails then the other source can take care of the Cisco Catalyst 6513 Switch while the IOS upgrade is going on.


October 4, 2008  12:21 PM

Things to be considered before upgrading an IOS in a Cisco 6500 Series Switch with SUP720- Series 2

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

In the first series I was talking about the TFTP severs, now let’s proceed further, one more key thing you must consider before starting an IOS upgrade for a Cisco Catalyst 6513 Switch with Supervisor Engine SUP720 is the Compact flash memory. The Supervisor Engine SUP720 comes with two slots for memory. Recommended part number

MEM-C6K-CPTFL256M

Cat6500 Sup720 Compact Flash Mem 256MB

The Compact flash memory is required in order to avoid any failure IOS file upload through TFTP server. As before uploading the file the current IOS file is deleted from the boot flash memory of the switch. Before starting the IOS upgrade in the  Cisco Catalyst 6513 Switch with Supervisor Engine SUP720 issue a boot command to boot from the flash memory if the Cisco Catalyst 6513 Switch with Supervisor Engine SUP720 fails to boot from the boot flash memory by issuing following command.bootflashNote:  the Compact flash memory is inserted in the slot 1 of the Supervisor Engine SUP720.


October 3, 2008  11:04 AM

CCDE Practical Beta Exam Available

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

Cisco has announced the availibity of beta version of CCDE Practical exam, Cisco will be offering this beta delivery of the exam on October, 1 in Chicago, Illinois USA – at a Pearson Professional Testing Center. Only candidates that have a passing score on the CCDE qualification exam may register and participate in this exam.

The cost to participate in the beta delivery of the CCDE Practical is $980US and will only be delivered in Chicago on Oct 1, 2008. The estimated cost for the CCDE Practical exam after the October delivery will be $1,400.

For more details do check this article from Cisco Learning Center


September 29, 2008  12:26 AM

Things to be considered before upgrading an IOS in a Cisco 6500 Series Switch with SUP720- Series 1

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

Today I successfully upgraded the IOS for a Cisco Catalyst 6513 Switch with Supervisor Engine SUP720. Couple of years I faced some problems while I was upgrading the IOS for Catalyst 6513 Switch. In this series I will try to focus on the things to be considered before upgrading an IOS in Cisco Catalyst 6513 Switch.

First and foremost is the TFTP server. The main problem you face is the file size limitations with the TFTP servers. Most of the TFTP servers won’t support more than 30 MB of IOS file to transfer. At that time I was using Solar Winds TFTP server which is an excellent software but cannot support more than 30 MB. The IOS transfer failed exactly after 30 MB of transfer. I was worried what might be the problem, after careful observation I figured out the problem lies with the Solar Winds TFTP server .Then I tried Cisco’s old TFTP server but the same problem. Later on I figured out TFTP server can support more than 30 MB of file transfer.

Hence after changing to 3Coms 3CDaemon Server  &  PacketTrap pt360 Tool Suite FREE edition I could able to transfer the IOS files more than 30 MB. So the main point is to make sure your TFTP server can support more than 30 MB of file transfer as always the image file for Cisco Catalyst 6513 Switch is more than 30 MB in size. Presonally I would recommend the TFTP server from PacketTRAP pt360  Tool Suite

Things to be considered for IOS upgrade series 2 


September 27, 2008  7:33 AM

Cisco boosts collaboration products

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

Cisco announced the launch of latest set of collaborative solutions, which Cisco believes will help them to tap the 34$ billion market for collaborative solutions.This launch includes more than 40 products, which includes key updates & new additions for unified communications including Web 2.0 and video platforms. Cisco CEO and Chairman John Chambers in a video briefing with journalist said “decade of productivity and a decade of innovation, in which people all around the world will be able to participate”.Earlier this month Cisco launched Virtual Office for home workers, is set to release more offerings to tap into the demand for flexible working. The launch also includes the latest version of Cisco Unified Communication 7.0. The latest version of Unified Communication includes the compatibity with windows mobile to increase the mobility usage. Cisco also plans to introduce integration with Apple iPhone by next year.For more details about this launch do check this article.


September 24, 2008  6:27 PM

How to turn a Cisco Router into ASA..

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

Guess what your Routers  support zone-based policies, which really helps with multi-interface restrictions (rather than just one outside & one inside interface with individual access list applications). Likewise, it now supports application inspection to catch those scandalous peer-to-peer programs.  

zoneguide

Courtesy: Cisco

Cisco IOS® Software Release 12.4(6)T introduced Zone-Based Policy Firewall (ZFW), a new configuration model for the Cisco IOS Firewall feature set. This new configuration model offers intuitive policies for multiple-interface routers, increased granularity of firewall policy application, and a default deny-all policy that prohibits traffic between firewall security zones until an explicit policy is applied to allow desirable traffic. For more details do access this document from Cisco.


September 24, 2008  11:21 AM

HP to Acquire Colubris Networks to Expand, HP ProCurve’s Wireless Technology Offerings

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

HP  announced that it has signed a definitive agreement to acquire Colubris Networks Inc., a Waltham, Mass.-based, privately-held global provider of intelligent wireless networks for enterprises and service providers.HP plans to integrate Colubris’ extensive product line into its ProCurve Networking product portfolio. This will expand HP ProCurve’s reach into vertical markets such as hospitality, transportation, healthcare, manufacturing, service provider and education.

The award-winning Colubris Networks Intelligent Mobility Solution delivers wireless integrated access, management and security products as well as 802.11n capability – all of which help enterprises and service providers broaden the reach and impact of voice, data and multimedia applications.

“The acquisition of Colubris Networks will strengthen ProCurve’s hardware, management platform and services, significantly improving the overall performance capabilities of both wired and wireless networks, and will deliver even more best-in-class choices for our customers worldwide,” said Marius Haas, senior vice president and general manager, HP ProCurve. “With our vision and continued support from HP leadership, I am convinced that ProCurve’s impressive growth and market leadership is unlimited.”

The acquisition is subject to certain closing conditions and is expected to close by the end of HP’s fiscal year 2008. Financial terms of the transaction were not disclosed.


September 24, 2008  8:27 AM

How to configure intervlan routing between Cisco Catalyst Switches and HP Procurve Switches Series 2

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

In my previous post I did discussed about the how common terminologies are applied by both Cisco & HP, now it’s time  proceed further , in this example we will create two VLANs and make intervlan communication between HP Procurve Switches  and Cisco Catalyst Switches.

 

HP-Cisco Vlan

 

We will create 2 VLANS in both Switches, as shown in the below table

IP address

 

Now let’s see what configuration commands required to create a VLAN, and enable intervlan communication between HP Procurve Switches  and Cisco Catalyst Switches.

commands1

Commands2


September 22, 2008  6:53 AM

How to configure intervlan routing between Cisco Catalyst Switches and HP Procurve Switches Series 1.

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

In this series of article you are going to experience how to configure VLAN trunking between HP Procurve Switches  and Cisco Catalyst Switches.

Before proceeding further lest understand the basic terminoly applied by both Cisco and HP for the following things

When it comes to VLANs in Cisco every one thinks of the term TRUKING.

HP applies trunking for ether channel where as in Cisco it applies for VLANs

Let’s compare how both vendors define Trunking

HP-Cisco

Source:HP

VLAN Terminologies applied by Both Cisco & HP

Vlans comparison

 

to be continued in next series


Forgot Password

No problem! Submit your e-mail address below. We'll send you an e-mail containing your password.

Your password has been sent to: