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Rolling back an upgrade on Junos

On Juniper devices, there are two steps performed during the upgrade. The first is to push the software to the device and the second one is to reboot the device so that the software would be installed. You can perform these two steps in a single operation(add ‘reboot’ knob) or you can split the two… Keep reading »

SNMP stats for VCP ports in Virtual Chassis Fabric(VCF)

Starting with 14.1X53-D10, the SNMP stats for VCP ports in Juniper VCF are available. You will be able to retrieve the packet rate, bytes rate per second, the total number of bytes and packets per port per direction(in/out) among others. To retrieve the stats, the following MIB object has to be used: jnxVirtualChassisPortEntry. To activate… Keep reading »

AWS Germany (Frankfurt) Region

AWS launched today a new Region in Europe, in Frankfurt, Germany. This is the second Region in EU, after the one from Ireland. The new Region has two Availability Zones(AZ). The new Frankfurt Region supports Amazon Elastic Compute Cloud (EC2) and related services including Amazon Elastic Block Store (EBS), Amazon Virtual Private Cloud, Auto Scaling,… Keep reading »

Representation of all Virtual Chassis members in JWEB

With the recent releases of EX switches, you are able to see in JWEB all the virtual chassis members, regardless of their state. These are the possible virtual chassis member status: Present Not Present Inactive Unprovisioned Let’s see how this is shown on JWEB and how is it on CLI. FPC1 will transition to all… Keep reading »

mtr on Juniper

Usually when you want to trace the path through the network that the packets take to reach a destination, you are using traceroute on Juniper devices. However, this doesn’t give you the ability to see if there is any packet loss towards destination. You can use ‘ping’ to check the packet loss, but you will… Keep reading »

Amazon AWS – Understanding AWS CLI – Part I

This is the first part of the series that will discuss the AWS CLI tool. This first part of the series will discuss how to:  Install AWS CLI  Configure AWS CLI  Use parameters and options  Control the output returned by AWS CLI You can read the article here: http://resources.intenseschool.com/amazon-aws-understanding-aws-cli-part-i/

Amazon AWS – Understanding EC2 storage – Part IV

This is the last part of the series Amazon AWS – Understanding EC2 storage. These are the topics discussed in this part: * Introductory information about AMIs * Create an Amazon EBS-Backed Linux AMI * Launch an instance from the AMI You can read it here: http://resources.intenseschool.com/amazon-aws-understanding-ec2-storage-part-iv/

Amazon AWS – Understanding EC2 storage – Part III

This is the third part of the series Amazon AWS – Understanding EC2 storage. These are the topics of this part: * Instance stores * Introductory notions about Amazon S3 * Operations related to Amazon S3 buckets and objects You can read it here: http://resources.intenseschool.com/amazon-aws-understanding-ec2-storage-part-iii/

Amazon AWS – Understanding EC2 storage – Part II

This is the second article of the series Amazon AWS – Understanding EC2 storage. These are the topics of this part: * Introductory notions about EBS snapshots * Example showing the available operations related to EBS snapshots You can read it here: http://resources.intenseschool.com/amazon-aws-understanding-ec2-storage-part-ii/