A networker's blog
This is the fourth part of the Junos Fusion series and these are the topics covered: Diagram and the initial state Uplink Port Policy Uplink Failure Detection Conclusion Diagram and initial state This is the Junos Fusion setup. It is the same used in Part 3: FPC75 is an EX4300 and all the other… Keep reading »
This is the third part of the series covering Junos Fusion. The first and second parts covered the basics and how to bring up and verify that Junos Fusion is working properly. This part is a long one and it will cover: Diagram and initial state Satellite management Traffic forwarding and verification Resiliency Conclusion … Keep reading »
This is the second part of the Junos Fusion Series. In the first part, I explained the concepts behind Junos Fusion. Junos Fusion Enterprise means that the AD is EX9200 and the SDs can be EX2300, EX3400, EX4300 and QFX5100. In the second part we will see how a Dual AD Junos Fusion Enterprise is… Keep reading »
This is the first part of the series about Junos Fusion and these are the topics: Overview Benefits Components Ports Software Overview Junos Fusion allows to significantly increase the number of interfaces on a device(called aggregation device, AD) by interconnecting the AD with satellite devices(SD). The resulting system(Junos Fusion) presents itself to the rest of… Keep reading »
In this part of the series, I will show how you can use Vagrant to spin up a topology using Juniper vQFX and Cumulus VX. For testing purposes, I need to have a topology running on my laptop. Because I wanted to learn Cumulus, I decided to use Cumulus VX in my tests to get… Keep reading »
The 32 ports on Juniper QFX5200 can operate as 100G or 40G, based on the optic inserted in the port. The 100G ports can work as 100G or they can be channelized to 50G or 25G. The 40G ports can work as 40G or they can be channelized to 10G. The 100G/40G appeat as et-fpc/pic/port… Keep reading »
On QFX10k, by default you cannot see the statistics for the logical child links of an aggregated interface. Based on the family configured(ethernet-switching, inet and so on), you might see some of them(on only some of the child links, on only one direction or some other times, duplicated stats). To solve the problem, you need… Keep reading »
In this post we will see how DHCP Relay is configured on EX9200. Actually, the same type of configuration can be applied on any Juniper platform that supports ELS. DHCP Relay allows clients to get an IP address even when they are not in the same broadcast domain with the DHCP server. The DHCP Relay… Keep reading »
This post will be about OpenNMS and what it can do to monitor the network. OpenNMS is similar to LibreNMS covered here. The installation is pretty straighforward and installation steps for various OSs are provided. The official documentation containing installation steps, tutorials, links to community is on OpenNMS wiki. But let’s see how this looks… Keep reading »
This post will be about LibreNMS and what it can do for you. LibreNMS is an open-source network monitoring tool and it is a fork of Observium. LibreNMS provides graphs, notifications to allow you to monitor the network and be informed of any changes taking place. The documentation is pretty exhaustive and you can get… Keep reading »