Show tech-support confidential

Have you ever thought of hiding sensitive information’s when sharing a show tech files? Form Cisco IOS XE Amsterdam 17.3.x with show tech-support, Cisco introduced a keyword confidential which hide sensitive information.. show tech-support confidential : The confidential keyword was introduced, to mask sensitive information in the output of show tech-support command When using show…

Things I learned from 1 Gbps Home internet Customer

Few Days back I was working with a customer who subscribed 1Gbps Home Internet connection. He called us to investigate the network devices and make sure that 1 Gbps is available over the LAN. I Visited the customer with my 4 years old Dell laptop which has a Lan port of 1G speed. Even though…

Cisco CLI Analyzer

We all are familiar with the term Quarterly/half Yearly Helath checks. its apart of Annual Maintenance Contract. Without making use of a tool, conducting HC is impossible. Many engineer does the HC just by checking the versions. Cisco provide us a nice tool called CLI analyzer which connects with internal TAC tools and knowledge integrated….

Move to Type 9 password

Its highly recommended to replace your type 5 and 7 passwords with type 9 passwords. Many of us are aware that type 5 and type 7 passwords can be decrypted using online tools but many still not. Todays blog is all about configuring type 9 password. You can try decrypting type 5 and 7 password…

Remove RSA host key using ssh-keygen

nithineluvathingal@EluS-MacBookPRO ~ % ssh administrator@198.18.133.3 @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY! Someone could be eavesdropping on you right now (man-in-the-middle attack)! It is also possible that a host key has just been changed. The fingerprint for the RSA key…

Verify MD5 from Router CLI

During a voice gateway IOS upgrade task to validate the file, customer requested to verify if the copied file and the file in the flash are of same size. Its not the right way. We need to compare the MD5 value. Today’s blog is about how to verify the MD5 using router CLI. Command to…

9200 upgrading in Install Mode.

Always Follow your version release guide.The below screenshots are from Cisco IOS XE Amsterdam 17.3.x release guide. The sample output in this section displays upgrade from Cisco IOS XE Amsterdam 17.2.1 to Cisco IOS XE Amsterdam 17.3.1 using install commands only.

Bridge Domain Interface

For platforms running IOS-XE This concept is very similar to BVI . Below are some of the common terminologies used : Bridge domain represents a Layer 2 broadcast domain. Bridge domain interface is a logical interface that allows bidirectional flow of traffic between a Layer-2 bridged network and a Layer-3 routed network. Ethernet Virtual Circuit (EVC) is an…

Install Verse Bundle Mode

Last week I was on a Greenfield deployment of 9300/9200 switches. While stacking I received “incompatible Chassis” message. Show Switch shows current state as “v-mismatch” Even though all switches where on the same version I was unable to stack due to V-Missmatch. Finally I found an interesting thing on my switch stack. Two switches where…

CML Node Logins

On CML, Each node type has its own default login. Use below credential for CML 2.X.