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…

Virtual LAN (VLAN)

What is a vlan ? Virtual Lan separate an exiting physical network into multiple logical network. Thus each vlan create separate Broadcast domain. Configure a Vlan ASSW#conf tASSW(config)#vlan 10ASSW(config-vlan)#name DATA Assigning Vlan on an Access port We all are familiar configuring vlan on an access port using vlan-id. But From ios version 15.2(3)E2, Cisco IOS XE…

Wireless Console

As a network engineer working with wired console cable is always a trouble.i was in search for a wireless console and finally i found one called Airconsole from get console.I am using the Airconsole LE model from last one year and its a good product. you can find verity of models which suites your requirement…

DNS

What is a DNS Records When a computer attempts to access any resource on the Internet, it uses a an IP address. When browsing the web, we usually type in a domain name like http://www.google.com into our browser. This is better than trying to remember an IP address linked to a Google server. The DNS…