juniper qualified-next-hop, route preference, default route and longest-prefix-match rule are the topics related to juniper static routing concept that we have discussed in the previous section and we will configure in this section.
we will also see the difference between juniper routing table and forwarding table in this section
In this section we will talk about static routing and specifically juniper static routing concepts. First, we’ll go through some routing concepts as a whole, and then pay attention to some concepts and terminologies specific to Juniper devices.
DetailsJunos routing is the main topic of the next sections. In order to better understand the concepts related to the routing, in this section we prepare a simple lab based on vSRX that will be used in the next sections to practically configure various concepts.
DetailsJunos SNMPV3 configuration is the discussion of this section. With the SNMP protocol, we can monitor network devices and servers remotely. SNMP is the most common monitoring protocol used in the networks.
SNMPv2c is the most widely used version of SNMP, which will be discussed first. SNMPv3 is the most secure version of SNMP, which is discussed next.
Junos traceoptions is the same as the debugging tools from Cisco and many other vendors. You can use the traceoptions feature to monitor the device background process and traffic to and from the Juniper device.
Traceoptions is a critical tool in troubleshooting, but it takes up a lot of disk space and needs to be enabled when needed and disabled after troubleshooting is complete.
Junos syslog configuration allows us to be informed in real-time about important changes in the network, for example when an interface goes down, a BGP neighborship goes down, or a new command is configured on the network device.
DetailsJunos Interface Initial Configuration includes configuring both physical properties and logical properties. IP address configuration is part of interface logical configuration.
When you configure multiple IP addresses in Juniper devices, opposite to cisco devices, they are not replaced but all addresses will be added to the device.
Now the question is which address will be used as the source address when packets are originated from that interface. Junos Primary and Preferred address is the answer to this question.
Junos interface types and naming conventions introduces different type of physical and logical interfaces and how they are named and numbered in juniper devices. This is what you need to know as a network engineer and is the topic of this section.
DetailsJunos SSH public key authentication is the feature that allows administrators to log in to the Juniper devices without a password. It is attractive and secure at the same time. It is particularly useful in network automation.
DetailsThe initial configuration of Juniper devices is the first step after purchasing a Juniper device. Initial configuration typically means enabling root authentication which is required, configuring a hostname and management IP address, and enabling SSH or Telnet remote access. It can also be a good idea to configure domain names, name servers, time zones and NTP servers.
We will also learn how to revert back to the default factory configuration or erase all configuration and data files to reconfigure the juniper device from scratch.