Juniper SNMP Configuration and Permission Enable SNMP #set snmp community juniper authorization read-only [Here SNMP will be enabled and Community name is juniper] If you want to restrict your SNMP then go with below procedure. Set SNMP Client for Allowed Network #set…

Configure Aggregate Routes in Juniper You want to aggregate some of the routes in the routing table to reduce the size of the tables and to minimize the amount of routing-information advertisements between routers. Configure an aggregate route that covers…

Juniper Routes in the Forwarding Table You want to see the routes that RPD has installed in the forwarding table and that the router is actually using to forward packets. Use the show route forwarding-table command to see the active…

Juniper Turning On Logging You want to monitor all systemwide operations by saving all log messages to a file on the router. Use the following commands to save all log messages to a file called messages: # set system syslog…

Juniper Bandwidth Restriction to Single IP #set firewall policer 10mb  if-exceeding bandwidth-limit 10m #set firewall policer 10mb  if-exceeding burst-size-limit 1m #set firewall policer 10mb  then discard [Create policer name 10mb for 10mb bandwidth] #set firewall filter bandwidth-control term 1 from source-address 1.1.2.2/32 #set firewall filter bandwidth-control term…

Juniper Static Router with Preference Use qualified-next-hop to allow independent preference for static routes to the same destination: Primary next hop due to default route preference (5) Secondary next hop due to configured route preference (7) So traffic will go through…

Juniper Interface Bandwidth Restriction #set firewall policer 10mb if-exceeding bandwidth-limit 10m #set firewall policer 10mb if-exceeding burst-size-limit 1m #set firewall policer 10mb then discard [20mb is policer name, burst size should be 10% of bandwidth limit] #set interfaces ge-1/0/0 unit…

Juniper Sub Interface Bandwidth Limit #set firewall policer 20mb if-exceeding bandwidth-limit 20m #set firewall policer 20mb if-exceeding burst-size-limit 2m #set firewall policer 20mb then discard [20mb is policer name. unit 100 is sub interface. burst size should be 10% of bandwidth…

Juniper Monitoring Interface Traffic You want to look at the headers of packets transiting an interface to debug protocol operation. Use the monitor traffic command: # run monitor traffic interface ge-1/0/1 [It will monitor the interface all incoming and outgoing…

Juniper IPv6 Static Routes Configuration You want to be able to connect your router to the Internet. Create a default static route: # set routing-options rib inet6.0 static route 0::/0 next-hop 3001::1 [Here nexthop 3001::1 and source ip are all] # show routing-options…

It’s very important to set the date and time accurately with your local time, also its better to make the same date all of your routers and switches. Because if any troubleshoot or any incident will come it’s you have…

Juniper NTP Configuration You want to periodically resynchronise the time on the router to limit the effects of clock drift. Configure the router to periodically get time updates from an NTP server: # set system ntp server 192.168.100.14 # show…

How to show Last Time of configured # run show system uptime Current time: 2014-12-11 14:35:32 BDT System booted: 2013-09-11 18:12:54 BDT (65w0d 20:22 ago) Protocols started: 2013-09-11 18:14:41 BDT (65w0d 20:20 ago) Last configured: 2014-12-11 13:17:08 BDT (01:18:24 ago) by…

Juniper Show the Routes in the Routing Table You want to check the routing table to see that it contains the routes you expect to other routers in your domain and to routers in other ASs. The show route command…

Juniper View Routes to a Particular Prefix You need to check to make sure the local router has a route to another router in the network. Use the following version of the show route command: source@Router> show route 10.0.8.1 inet.0:…