What happens if you create a connection between two non-backbone OSPF areas that already connect to area 0? We sometimes call this a backdoor link. Connecting two non-backbone areas was covered in part 1. Will routes be shared between the two areas? Or will no routes be shared and traffic will travel via the backbone […]
Connecting OSPF Non-Backbone Areas Part 2 Read More »
What happens if you connect two OSPF areas together when neither of them is area 0? Will routes be shared between the two areas, or will it simply not work? I can think of two scenarios for this: In this post, we’re going to lab the first scenario out and see what happens. We’ll look
Connecting OSPF Non-Backbone Areas Part 1 Read More »
In this post, we’re going to walk through the process for configuring RIPng on Junos-based devices. It is very similar to RIP, so you may like to look at configuring RIP part 1 and part 2 as well. RIPng is used to advertise IPv6 routes. So we will want to look at the inet6.0 routing
Junos RIPng Configuration Read More »
In part 1 we looked at the basics of configuring RIP on Junos. In part 2 we are going to look at authentication, changing metric values, and changing the preference for RIP routes. Lab Setup The lab setup is the same as it was for part 1. A couple of things to note with the
Junos RIP Configuration Part 2 Read More »
In this post, we’re going to walk through the process for configuring RIP on Junos-based devices. There are a couple of key points to remember: Lab Setup The following diagram details the lab. A couple of things to note with the lab: RIP Configuration Router R1 We will configure the following: There are a couple
Junos RIP Configuration Part 1 Read More »
I recently came across an interesting issue with DHCP and Client Identifiers. Whilst working on the Junos as a DHCP server post, I found that only one client would get an address via DHCP, and the other client wouldn’t. The MAC addresses were different, so it appeared that it should be working. After some searching,
DHCP And Duplicate Client Identifiers Read More »
We’re going to look at how to configure three types of devices to act as a DHCP server. Click here if you need a refresher on how DHCP works. Although the configurations are done on the virtual edition, it will be the same for physical devices as well. The configuration is basically the same across
How To Configure Junos Devices As DHCP Servers Read More »
BGP community strings are widely used in routing policy. In this post we’re going to look at: Lab Setup All of the examples that follow are based on the following lab setup. VMX-2 is advertising the following routes to vMX-1. Route Community Strings 172.16.0.0/24 65001:100 65002:50 172.16.1.0/24 65001:200 65003:6789 172.16.2.0/24 65001:300 65002:50 172.16.3.0/24 65001:400 65003:9876
Junos And BGP Community Strings Read More »
BGP community strings are a way of marking or tagging a route. Routing policy can then match on a community string, and take a defined action. They are typically used in one of two ways: Types Of Community Strings Broadly speaking, there are three types of community strings. Standard communities are 4 bytes long and
BGP Community Strings Read More »
Local users on Junos are configured under the system login hierarchy. To configure centrally managed user accounts, you can use RADIUS or TACACS. Users And Classes Users are the individual user accounts. Each account is assigned to a class. The classes act like user groups, specifying what permissions a user has. There are four pre-existing
Junos Local User Accounts Read More »