Bye Evernote, hello (Dropbox) Notes Folder I’ve been a heavy Evernote users across my OS/X and IOS devices, but got more and more annoyed about my inability to find notes quickly (UI issue, or more likely, me), lack of Linux client and probably most importantly, no easy way to print/export to PDF. title Thanks to... Continue Reading →
OpenConfig and gRPC Junos Telemetry Interface Starting in Junos OS Release 16.1R3 one can request streaming telemetry data using the gRPC framework with vendor-neutral data models based on OpenConfig. Great, but what configuration is required and is there a simple client available to test and troubleshoot it? I recently faced this question myself and found... Continue Reading →
async rpc ncclient example ncclient is a great Python library that facilitates client-side scripting and application development around the NETCONF protocol: https://github.com/ncclient/ncclient Typically, one uses the provided functions in synchronous mode, where replies are awaited and the result returned. I was however in need of asynchronous mode, where operations return immediately, allowing me to do... Continue Reading →
I was in need to fetch an operational Junos script from a URL automatically at startup. Junos has such capabilities for a long time and it is based on the idea of downloading the script while an operator configures the script in Junos via CLI: [edit] mwiget@pe1# edit system scripts op file say-hello.py [edit system... Continue Reading →
DHCP Client in Junos vMX This is just a quick lab note about successfully enabling DHCP client mode on the management and revenue ports fxp0 and 0/0/x on a vMX running 17.1R1. Background is a cloud deployment, where the interface IP addresses are dynamically assigned via DHCP to the interfaces of the virtual instance. lab@vMX1>... Continue Reading →
vMX explores his surroundings in Amazon AWS Recently I started exploring ways in Junos to program IP routes in Amazon AWS EC2 using their REST API. Junos 16.1 not only comes with Python 2.7.x, but also with all the default modules and some extras, like PyEz: Understanding Python Automation Scripts for Devices Running Junos OS.... Continue Reading →
L2VPN Custom YANG Summary There are many ways to provision pseudowires over a MPLS network. Some require knowledge about both PE addresses, like FEC 129 (https://tools.ietf.org/html/rfc4379). Others, like Kompella L2VPN (https://tools.ietf.org/html/rfc6624, assume pseudowires to belong to the same customer across a MPLS network and hence require a routing instance per customer per PE. What if... Continue Reading →
MQTT on Juniper devices with Junos 16.1R1 For decades, syslog and snmp traps have been extensively used to receive event notifications from devices. It typically required an operator to configure the event category and severity level on the devices and where to send the events to. Fast forward to today and thanks to a generic... Continue Reading →
Kolla: Openstack in Docker containers with Ansible playbooks Deploying Openstack isn’t something you do before your first coffee in the morning. There are many choices, from what version and distribution to which Linux distribution and version to run it on. Once that’s decided, the painful task of checking the major and minor release dependencies starts.... Continue Reading →
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