Junos Basics – Creating VLAN’s

This is the first in a series of blog posts covering some of the basics of Junos. In this post I’ll be covering the process of creating VLAN’s on a Juniper switch and assigning interfaces to them. The model of switch I am using is an EX2200-C, running Junos 11.4R1.6. Creating the VLANs’s is very […]

CCNP ROUTE Study – EIGRP Passive Interfaces

We know that enabling EIGRP on an interface has two effects: EIGRP Hello packets will start being sent out of the interface to multicast  address 224.0.0.10.  This means that neighbour relationships (adjacencies) can be formed with other routers directly connected to the same subnet and using the same EIGRP AS number the network that the […]

Check Point – Site To Site VPN – Encryption Domain issue

Recently, whilst setting up Site-to-Site VPN with a partner company we saw an issue where the VPN tunnel came up successfully, but the connections allowed by the associated firewall rules failed. The Check Point tracker logs showed the packets being dropped, and the following information:   encryption failure: According to the policy the packet should […]

Reset a Cisco 2960 Switch To Factory Default Settings

Flattening a switch before re-deployment is one of those simple tasks that I always find myself having lookup on the web, so I thought I’d save myself some time in future and document it here. Step 1. Connect up your console cable and power on the switch, whilst holding down the “mode” button:     […]