How to recertify the CCIE Certification

 Complete one of the following to recertify:

• 1 Expert level lab exam
• 1 CCDE written exam
• 1 Core exam &1 Concentration exam
• 2 Core exams
• 3 Concentration exams
• 1 Core exam & 40 CE credits
• 1 Concentration exam & 80 CE credits
• 2 Concentration exam and 40 CE credits
• 120 CE credits

How many packets dropping rate is acceptable?

 

Below are the SLA parameters for Video and Voice. 

Transport network SLAs for video quality

Recommended network SLA for video[4] is as follows:

• Latency ≤ 150–300ms
• Jitter ≤ 10 ms–50ms
• Loss ≤ 0.5%

Incidentally the recommended network SLA for transporting audio are:

• Latency ≤ 150–300ms
• Jitter ≤ 20 ms–50ms
• Loss ≤ 1%

Please refer below link for more details

https://www.cisco.com/c/en/us/support/docs/quality-of-service-qos/qos-video/212134-Video-Quality-of-Service-QOS-Tutorial.html

Cisco Fabric reset - Factory default

 

Step 1: Wipe the switches.

Spine201# setup-clean-config.sh

In progress

In progress

In progress

In progress

In progress

Done

Spine201#

Step 2: Wipe the APICs.

Run the following commands on each APIC:

apic# acidiag touch clean

This command will wipe out this device. Proceed? [y/N] y

apic# acidiag touch setup

This command will reset the device configuration, Proceed? [y/N] y

Step 3: Reload the APICs.

apic# acidiag reboot

This command will restart the this device, Proceed? [y/N] y

Step 4: Reload the Switches.

Step 5: Reconfigure the APICs.

Can XFP-10G-MM-SR compatible with SFP-10G-SR ?

 yes, we can connect a transceiver XFP-10G-MM-SR in one side and SFP-10G-SR in other side.

Throughput license installation in ASR 1002-x

There is no need to install the license on the router as cisco ASR 1002-x supports RTU(Right to use) method where cisco trust the customer.

I have installed L-FLSA1-2X-5-10G= on the router 1002-x.

Below is the command to configure new throughput level but it requires the reboot to activate.

(config)#platform hardware throughput level 10000000

PLEASE  READ THE  FOLLOWING TERMS  CAREFULLY. INSTALLING THE LICENSE OR LICENSE  KEY  PROVIDED FOR  ANY CISCO  PRODUCT  FEATURE  OR  USING SUCH PRODUCT  FEATURE  CONSTITUTES  YOUR  FULL ACCEPTANCE  OF  THE FOLLOWING TERMS. 

YOU MUST NOT PROCEED FURTHER IF YOU ARE NOT WILLING TO  BE BOUND BY ALL THE TERMS SET FORTH HEREIN.   Use of this product feature requires  an additional license from Cisco, together with an additional  payment.  You may use this product feature on an evaluation basis, without payment to Cisco, for 60 days. Your use of the  product,  including  during the 60 day  evaluation  period,  is subject to the Cisco end user license agreement http://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.htmlOUTPUT SHORTENED

Activation  of the  software command line interface will be evidence of your acceptance of this agreement.

ACCEPT? (yes/[no]): yes

ASR# write memory

Building configuration…

[OK]

ASR##reload

Proceed with reload? [confirm] 

After reboot, license remains as EvalRTU license for 60 days and then it changes automatically to Right-To-Use License

You can also use below command to move the license directly to permanent status instead of waiting for 60days.

ASR # license right-to-use move throughput

Use below commands to verify the throughput

ASR # show platform hardware throughput level

ASR# show license feature | include Feature|throughput

Steps to establish a physical connection in ACI

 To implement a physical connection in ACI, first define the following:

• Domain – Defines what you want to connect (bare-metal server or switch, router, virtual environment, etc.).

• VLAN/VSAN Pool – Defines which VLANs or VSANs this connection will use.

• AEP – Groups the Domain(s) you need to allow through a specific port and their corresponding VLANs/VSANs.

• Interface Profile – The interface for this connection.

• Interface Policy Group – The set of policies applied to an interface.

• Interface Policies – The actual policies (e.g. cdp, lldp, link speed, AEP, etc.) for this connection.

• Switch Profile – The Switch/Node for this connection.

Host a SSL (https) website on Ubuntu

  Below are the steps to host a website on port 80. In the below example 172.16.1.11 is the IP adddress on the Ubuntu server which will receive the customer traffic.

Step 1 : Enable SSL and restart Apache services

sudo a2enmod ssl

sudo service apache2 restart

STEP 2: Create a directory which contatin the certifcate and key.

Sudo Su

mkdir /etc/apache2/ssl

STEP 3: Generate self sign certificate and key

openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout /etc/apache2/ssl/apache.key -out /etc/apache2/ssl/apache.crt

STEP 2:  Create the index html file and add the HTML code in it

nano /var/www/html/172.16.1.12_all/index.html

<html>

<title>172.16.1.12_8080</title>

<h1>Welcome to 172.16.1.12_8080 Website</h1>

<p>Website on port 8080</p>

</html>

ctrl + X then press Y 

Press Enter

STEP 4:  Add below ServerName in apache2.conf file

/etc/apache2/apache2.conf file:

ServerName localhost

STEP 5:   Add the website to the "SITES-AVAILABLE" FOLDER.

nano /etc/apache2/sites-available/172.16.1.12_all_ssl.conf

<VirtualHost 172.16.1.12:443>

ServerAdmin admin@localhost

ServerName  172.16.1.12

DocumentRoot /var/www/html/172.16.1.12_all

DirectoryIndex index.html

SSLEngine on

SSLCertificateFile      /etc/apache2/ssl/apache.crt

SSLCertificateKeyFile /etc/apache2/ssl/apache.key

</VirtualHost>

ctrl + X then press Y 

Press Enter

STEP 6:  Publish the website on Ubuntu

sudo a2ensite 172.16.1.12_all_ssl

STEP 7:   Restart Apache service

sudo service apache2 restart

STEP 8:   Check the website syntax

apachectl configtest