A networker's blogSometimes is needed to connect using ssh or telnet to specific members of a QFX5100 VC or VCF. Using the vme interface IP address will always connect you to the master FPC of the VC or VCF. This can be accomplished by using groups similar to the ones used to achieve the same thing on… Keep reading »
There is a list of RADIUS attributes that can be pushed from the server to an EX or SRX which will override the configuration from the NAS. You can find the entire list of attributes that EX or SRX can work with here: http://kb.juniper.net/InfoCenter/index?page=content&id=KB11078&smlogin=true Let’s demonstrate how an attribute pushed from the server will take… Keep reading »
This library can be used as initial configuration of the new devices(also known as New-Out-Of-Box (NOOB)). This library is a dependency for Junos modules for Ansible. More information about the usage/installation/upgrade can be found here: https://github.com/Juniper/py-junos-netconify Let’s start with a practical example of installation and how to use it: This is how you install the… Keep reading »
From Junos CLI you can use write-file and read-file to write and read packet captures using ‘monitor traffic’ command. These commands are hidden in CLI. However, if you login to shell, you can use ‘-w’ and ‘-r’ parameters on tcpdump to achieve the same results. But that is an extra step to do something so… Keep reading »
Starting with 14.1, it’s possible to execute shell commands from SLAX scripts. This is an example of how you can get the output of the shell command “ifconfig me0”. First configure the OP script like this: {master:0}[edit] lab@ex4550# show system scripts op { file script.slax; } {master:0}[edit] lab@ex4550#
I was playing the other day with few interesting knobs/features in Junos. One of them is apply-path and this one is a chain of configuration keywords that points to a set of prefixes. The second one is “apply-flags omit” and this one allows you to remove configuration parts from being displayed when “show configuration” is… Keep reading »
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 »
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 »
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 »
If you upgrade a QFX5100 from a standard image to an image that has Switch Automation Enhancements and you try to change the configuration, you will get a warning message at commit regarding few packages that are not supported by the candidate configuration. This is the new Junos installed: