Networkzblogger

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vSONIC Virtual Switch on EVE-NG

vSONIC Virtual Switch on EVE-NG

SONiC is an open source network operating system based on Linux that runs on switches from multiple vendors and ASICs. SONiC offers a full-suite of network functionality, like BGP and OSPF, VXLAN that has been production-hardened in the data centers of some of the largest cloud-service providers. The community around SONiC has been growing and includes Juniper including Apstra, Arista, Nokia,…

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active assurance with juniper paragon active assurance (netrounds)

active assurance with juniper paragon active assurance (netrounds)

Hi All, hope you all are well. In this blog, will look at Juniper’s recent acquisition called Netrounds. Netrounds have been rebranded as Paragon Active Assurance (PAA) which is part of Paragon Automation portfolio and is a programmable, active test and monitoring solution for physical, hybrid, and virtual networks. Unlike passive monitoring approaches, Paragon Active Assurance uses active,…

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Github Link - JunOS Automation

Github Link – JunOS Automation

Hi All

Please see my Github link for Junos-automation examples which should be very handy in your environment i.e production and testing/integration. Let me know if there are any particular examples you would like me to share with you.

GitHub Link

Thanks

Mohit

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Juniper Config Backup on GITLAB

Juniper Config Backup on GITLAB

Hi All

In this blog, we will see how we can take the backup of router configs and push it to gitlab for version control.

We will take Juniper routers here for example and build the script in Python and run our task as a cronjob on CentOS 7 to automatically backup the configs onto GITLAB. We will use power of Git here to store the differentials in configs and we can see the differences in Gitlab UI.

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Connecting OpendayLight to Juniper Routers via Netconf

Connecting OpendayLight to Juniper Routers via Netconf

Hi All

In this blog, we will look at configuring Juniper routers via Opendaylight which in turn uses netconf/restconf for making the connection.

Before we can start doing the configuration we need to create a Netconf connector between Opendaylight and Juniper routers. Also before that let’s first see what NETCONF is 🙂

Network Configuration Protocol (NETCONF) provides a mechanism to install,…

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Segment Routed L2VPN TE - Cisco IOS-XR

Segment Routed L2VPN TE – Cisco IOS-XR

Hi All

Let’s see Segment routing in action in this blog particularly on IOS-XR. Segment routing is quite new concept which is picking pace these days. In my earlier blog I listed the differences between Segment routing and RSVP-TE and SR can replace it and there are certain areas where it may not be able to help however L3VPN and L2VPN Traffic Engineering is surely one area where it can be used…

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PCEP Initiated LSP using OpenDayLight and Juniper vMX

PCEP Initiated LSP using OpenDayLight and Juniper vMX

Hi All

In this post, we will look at Open day light controller working with Juniper vMXs and how we can use the controller to get the BGP, BGP-LS and PCEP working. Once everything is up and running we will use the Controller to initiate the PCEP initiated MPLS LSPs between 2 VMXs.

Sounds interesting? Let’s see how we can achieve this.

Before I go further, if you want to check anything on PCEP and…

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EVPN in JunOS

Hi All

This time we will be looking at EVPN, its configuration on JunOS and how it is different from VPLS.

Currently if service provider has to join customer’s multiple sites via Layer 2, only option is VPLS. VPLS can be LDP based or BGP based.

BGP based VPLS has advantages that you can use RRs to scale however VPLS as a whole has a disadvantages that:

We can’t do active-active multihoming with…

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Segment Routing v/s RSVP-TE?

SR (Segment Routing) is new and trending topic these days in Telecom Networks. It’s promising and some vendors are pushing for it because of the way we can leverage SDN Controller to steer the traffic through the Network plus how it will remove need of LDP/RSVPE-TE from core however i think there are still some of the use cases where it lacks some capabilities currently. I hope in future all…

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JunOS Automation using PyEZ and Northstar REST APIs

Hi All, in this session lets discuss some Automation.

During past few days, I was looking at some REST APIs for Juniper Northstar Controller. Now Northstar is good for LSP creation/deletion/modification but it cant configure the service E2E. Offcourse that tool is not meant to do all this but Juniper has recently released one beta version of it which can bind your LSP to some service which is…

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Juniper Northstar SDN Controller - Part 2

Juniper Northstar SDN Controller – Part 2

Following on my earlier blog on Northstar here: https://networkzblogger.com/2017/03/17/juniper-northstar-wan-sdn-controller, recently I got chance to work on next release of it which has among other things is ability to initiate P2MP (Point to Multipoint) LSPs. P2MPs are big use case in Media and Broadcast network and ability to create them via controller would be too helpful. However there is a…

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Ansible on JunOS

Hi All, first of all sorry for coming out late with next blog. Was busy in some personal and official stuff.

Also during past few days, I have been exploring having Ansible set up in our network for ease of configuring and having a centralised place to do some configuration on single or all boxes at once.

Ansible if you don’t know is Configuration Management, software provisioning tool. Ansible…

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JUNIPER JUNOS COMMAND SERIES – 3

JUNIPER JUNOS COMMAND SERIES – 3

Hi All, lets continue our useful Junos command series by looking at 2 more interesting commands. One is another flexibility which Juniper provides and 2nd is to see the command structure in way which can be directly pasted on CLI.

So this is our example policy config from MX104:

MX104-PE> show configuration policy-options policy-statement testterm 1 { from community test; then accept; } term 2 {…

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RSVP Messages in Juniper JunOS

RSVP Messages in Juniper JunOS

RSVP (Resource Reservation Protocol) is a transport layer protocol designed to reserve resources across a network for an integrated services Internet. RSVP is not a routing protocol and was designed to interoperate with current and future routing protocols.

RSVP by itself is rarely deployed in telecom networks today but the traffic engineering extension of RSVP, or RSVP-TE, is becoming more…

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vrf-table-label on Juniper JunOS

vrf-table-label on Juniper JunOS

In this blog we will discuss about one important knob in JunOS i.e vrf-table-label.

Vrf-table-label is useful for 2 purposes in Junos

Save label space on Junos

Perform 2 lookup on packet

So let’s understand it more. We will start with 1st point above

Junos by default allocates same VPN Label to prefixes coming out of one CE Interface. So for example if you have 2 CEs connected via 2 different…

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DHCP Server on Juniper MX104

DHCP Server on Juniper MX104

In this blog, we will discuss about configuration of DHCP for IPv4 on Junos particularly for MX104. MX router will act as a DHCP Local server which will assign IP Addresses to clients from the DHCP pool configured.

To configure DHCP as local server we need to apply the following license on MX which is paid license over the top.

subscriber-address-assignment – Radius/SRC Address Pool Assignment

su…

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Junos Telemetry

Hi All

Recently I attended a Juniper workshop in their London office and heard about Junos Telemetry concept which was really a new one for me and I quite liked it.

The basic idea is to replace traditional methods of collecting the data from devices on Management stations which helps Operations teams in more automated solution for managing their vast networks.

Traditional method which I am…

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