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JNCIA Junos
The road to JNCIA Junos.JNCIA Junos
One of my goals for 2019 is the brush back up on networking theory/operation after the last couple of years focused on network automation. This is a bit of a brain dump about my adventure in pursuit of the JNCIA-Junos certification and the study materials I used. Preface I have worked as...Juniper Firewall Filters
Firewall filters are similar to access control lists (ACLs). Firewall filters are stateless and inspect each packet individually. Because they are stateless traffic must be allowed in both directions. Configuration Routing policies and firewall filters have a common structure. ...continue reading
Juniper Routing Policy
Junos routing policy allows an administrator to alter the default behaviour of a routing protocol. All routing protocols try to determine the best path to a destination based on the protocols definition of the best "metric". The Junos routing policy framework allows an...continue reading
Juniper Junos
Junos is the name of the operating system that is used to manage Juniper network devices. Fun fact Junos is built on a base of FreeBSD and is designed to be modular and secure while providing a uniform user interface across all platforms. Junos Features Common Code Base The...continue reading
Juniper Protocol Independent Routing
Juniper protocol-independent routing covers IP routing components such as static routes and the various route tables within Junos that are not particular to any dynamic routing protocol. Routing Table The RE holds a copy of all routes from all protocols in its routing table....continue reading
Juniper Trace Options
Trace options are similar to running a debug in other vendors. Enable Tracing When tracing is enabled the results are stored in a trace file in the /var/log/ directory or sent to a remote syslog server. Remote logging is configured under the system > tracing ...continue reading
Juniper AAA
Junos has a robust authentication, authorization and accounting (AAA) system ensuring authenticated users have access to only the things their permissions allow. Authentication Junos supports two categories of user authentication. Local - On box user database Remote -...continue reading
Cloud Notes: AWS S3
"Amazon Simple Storage Service (Amazon S3) is an object storage service that offers industry-leading scalability, data availability, security, and performance". At a high level S3 has the following characteristics: Object based storage for static files that do not change. EG: JPEG,...continue reading
Juniper iBGP
8 steps to configure iBGP. Configure a router-id Configure an autonomous system number Configure transport routing protocol Configure a BGP group and define the peer type Configure a BGP group local address Add neighbors to the peer group Define a routing policy to...continue reading
Juniper OSPFv3
3 steps to configure OSPFv3. Create a router-id (optional) Assign OSPF neighbor facing interfaces to OSPF area Inject routes into OSPF via passive interfaces Configuration Create a router-id. cmd set routing-options router-id 10.255.1.1 Assign OSPF neighbor facing...continue reading
Juniper eBGP
6 steps to configure eBGP. Configure a router-id Configure an autonomous system number Configure a BGP group and define the peer type Add neighbors to the peer group Define a routing policy to export routes Assign the routing policy to the BGP group Configuration ...continue reading
Juniper VRRP
7 steps to configure VRRP. Enable VRRPv3 Define a VRRP group number Configure a virtual IP address Configure a virtual link-local address (IPv6 only) Configure a priority Configure preempt (optional) Configure router advertisement properties (IPv6 only) ...continue reading
Juniper RIPng
4 steps to configure RIPng. Define a RIPng group Assign interfaces to the RIPng group Define a routing policy to export routes Assign the routing policy to the RIPng group Configuration Define a RIPng group. cmd set protocols ripng group RIPNG-GROUP Assign...continue reading
Juniper Static Routing
1 step to configure a static route. Configure static route under routing-options section Configuration Configure static route under routing-options section. cmd set routing-options static route 10.1.23.0/24 next-hop 10.1.12.2 Topology P1R1 cmd set routing-options static...continue reading
Juniper OSPFv2
3 steps to configure OSPFv2. Create a router-id (optional) Assign OSPF neighbor facing interfaces to OSPF area Inject routes into OSPF via passive interfaces Configuration Create a router-id. cmd set routing-options router-id 10.255.1.1 Assign OSPF neighbor facing...continue reading
Juniper RIPv2
4 steps to configure RIPv2. Define a RIP group Assign interfaces to the RIP group Define a routing policy to export routes Assign the routing policy to the RIP group Configuration Define a RIP group. cmd set protocols rip group RIP-GROUP Assign interfaces to the RIP...continue reading
Juniper Syslog
3 steps to configure Syslog. Define a logging policy Define remote logging servers Define a logging source address (optional) Configuration Log to a local file. Logs are stored in the /var/log directory. Define a logging policy. cmd set system syslog user * any...continue reading