Juniper ping command. 1) that you can examine further for possible problems.

Juniper ping command Sep 23, 2013 · Description This article discusses latency in ICMP pings when a Junos OS platform is responsible for ICMP echo reply. 1 rapid). Tested against Junos (17. CEC Juniper CommunityLoading Sorry to interrupt CSS Error Refresh Feb 12, 2019 · When trying to ping or access a service on the device, revenue/management interfaces do not respond even though the service or ping is allowed on respective zones/device. To find MAC addresses for devices connected to the SRX 5800 Firewall, one must ping it to populate the ARP table and get the MAC address. 3X8, 14. Solution Topology router1 (192. Description Check host reachability and network connectivity. The Services Router sends a series of ICMP echo (ping) requests to a specified host and receives ICMP echo responses. Synopsis ¶ Execute the ping command from a Junos device to a specified destination in order to test network reachability from the Junos device . Replace Switch —Replace a switch without disrupting the network services on your network topology. Starting in JUNOS搭載のSRXなどからPINGを実行する際には、オペレーションモードで以下のように実行します。 なお、pingコマンドの実行を終了させるためには、pingの実行中に Ctrl + C を入力する必要があります。 Oct 8, 2025 · Synopsis Tests reachability using ping from devices running Juniper JUNOS to a remote destination. builtin. Where we can look up for this Note: In a Juniper-Cisco interoperation network scenario, a point-to-multipoint LSP ping echo reply message from a Cisco device in a different IGP area is dropped on the Juniper device when the source address of the reply message is an interface address other than the loopback address or router ID. ping module Mar 28, 2022 · Learn the steps for the basic configuration of a Juniper router and the basic commands of JUNOS operating system, different from Cisco IOS. By understanding and mastering the Junos CLI Jul 17, 2024 · Description Behavior of ping with source and interface options in Junos-Evo. The traceroute command shows the loop between 10. 1 and higher. Solution When the command "ping 8. net_ping module. May 3, 2023 · To use the ping command, enter "ping <IP-address>". The Junos CLI provides a vast set of commands that can be used to perform a wide range of functions, from configuring interfaces to troubleshooting connectivity issues. Use the CLI ping command to verify that a host can be reached over the network. 26. Nov 19, 2015 · This applies to SLAX version 1. Apr 1, 2025 · This article will help network administrators with some handy tips on using PING feature set in Cisco, Juniper, Windows and MAC devices. The output for the show route command shows the interface (10. Symptoms Ping might succeed if a non-relevant interface is mentioned along with the source option in the ping command Solution This is expected behavior, when source and interface are mentioned simultaneously in the ping command. The "interface" argument does not restrict the ping to strictly be sent out of the P ping clns ping fabric multicast-flow ping fabric unicast-flow ping mpls bgp ping mpls l2circuit ping mpls l2vpn ping mpls l3vpn ping mpls ldp ping mpls lsp-end-point ping mpls rsvp ping mpls segment routing isis ping mpls segment routing ospf ping mpls segment routing spring-te ping mpls segment routing static egress-ip ping overlay This video provides detailed coverage of the operational mode ping command that is available for MPLS LSPs. For example, to set the forwarding class to 5 when pinging a Layer 3 VPN, issue the following command: Check host reachability and network connectivity. In the example below, T=1/L=16 indicates the TTL with label 16. To interrupt a ping command, press Ctrl+c. 3R1. Nov 5, 2012 · Regardless of your vendor preference or your experience on the Juniper JUNOS CLI, assuming you have a point of reference to another vendor, your first thought when experiencing JUNOS is, “I have been here before. 10. Starting in Junos OS Release 13. 1 (R2) and 10. Overview Send a series of ping to remote-host, useful for troubleshooting MTU/MSS issues. 2 (R6), as indicated by the continuous repetition of the two Sep 14, 2025 · To change SRX as a router, delete all security configuration and run the following command: set security forwarding-options family mpls. Symptoms All the interfaces belong to custom routing instances. In operational mode, you can use Junos OS CLI commands to monitor and troubleshoot a device. Inter-VRF routing Mar 31, 2012 · HI expertswhat is the default source interface when we originate ping inside the VRF if there is multiple interfaces inside the VRF which one will be choose ? Mar 31, 2012 · HI expertswhat is the default source interface when we originate ping inside the VRF if there is multiple interfaces inside the VRF which one will be choose ? Apr 5, 2018 · Hello dears,I have create a routing-instance :routing-instances { SLA-LAB { instance-type forwarding; routing-options { static { Sep 22, 2025 · The ping command sends Internet Control Message Protocol (ICMP) ECHO REQUEST messages to elicit ICMP ECHO RESPONSE messages from the specified host. windows. Check the operability of the MPLS Layer 2 circuit connections. 1F6, 15. Using industry-standard tools and utilities, the CLI provides a powerful set of commands that you can use to monitor and configure Juniper Networks devices running Junos OS. 1R1, and later Check the reachability of a remote Connectionless Network Service (CLNS) node. Press Ctrl+c to interrupt a ping command. 16. By default, this action copies the existing switch configuration to the new switch. 9 from your host and whatever the IP on irb. To avoid MAC moves and loops, you can use any of the 16 different MAC pinning configurations. 8. Description Use either the J-Web ping MPLS diagnostic tool or the CLI commands ping mpls, ping mpls l2circuit, ping mpls l2vpn, and ping mpls l3vpn to diagnose the state of label-switched paths (LSPs), Layer 2 and Layer 3 virtual private networks (VPNs), and Layer 2 circuits. The monitor, ping, show, test, and traceroute commands enable you to display information and test network connectivity for the device. 1) that you can examine further for possible problems. Nov 12, 2024 · The ping command sends Internet Control Message Protocol (ICMP) ECHO REQUEST messages to elicit ICMP ECHO RESPONSE messages from the specified host. 9/26 network). This report explores these Mar 3, 2025 · Description When the command "ping 8. May 14, 2025 · Comparing Juniper and Cisco CLI Commands: A Comprehensive Guide In the world of network administration, Cisco and Juniper represent two dominant approaches to network device management through Command Line Interface (CLI). 8" is executed on CLI, there is no response seen even if the reachability is there. 8" is executed, by default the source interface will be fxp0. 168. 8". The ping command is useful for identifying connectivity problems, sending a series of ICMP echo requests. win_ping module instead. For example, to test the connectivity to the IP address 8. It is possible to set the value of the forwarding class for these ping packets by using the exp option with the ping mpls command. 2R6, 15. 38 count 10000 size 1400 interval 0. To ping a Layer 2 circuit, use one of the following commands: ping mpls l2circuit interface interface-name You ping an interface configured for the Layer 2 circuit on the egress PE router. 1)---------------------------(192. So you should be able to ping 10. Meaning The sample output shows an unsuccessful ping command in which the packets are being rejected because the time to live is exceeded. 1F5-S8, 16. It answers questions that are usually asked by attendees of the Junos MPLS and VPNs class, o When you execute the ping mpls command, the ping packets forwarded to the destination include MPLS labels. The Junos OS command-line interface (CLI) is a command shell specific to Juniper Networks. It might help if you post the ping command you're running to confirm. junos-ping is broader and matches on all icmp messages. 10) For a general purpose network module, see the ansible. 2) router2 Procedure From router1, ping the directly connected Purpose After you have checked the transit and ingress routers, use the traceroute command to verify the BGP next hop, and used the ping command to verify the active path, you can check for problems with the MPLS configuration at the [edit protocols mpls] and [edit interfaces] hierarchy levels. Welcome to this compilation of the most common Juniper / Junos Troubleshooting and Operational Commands. ping mpls l2circuit virtual-circuit neighbor <prefix> <virtual-circuit-id> You ping a combination of the IPv4 prefix and the virtual circuit identifier on the egress PE router to test the integrity of the Jul 2, 2024 · I'm guessing the config for port ge-0/0/12 is an access port in the management VLAN. Symptoms An ICMP ping shows intermittent latency on a directly connected link with the default Junos Class of Service (CoS) configuration. netcommon. Virtual routing and forwarding (VRF) is used to divide an EX Series switch into multiple virtual routing instances, allowing traffic isolation without using multiple logical routers. . This command shell runs on top of the FreeBSD UNIX-based operating system kernel for Junos OS. We noticed that some sort the intellectual algorithm of the speed adjustment appears when we were trying to use both parameters simultaneously (ping 172. This guide contains information Apr 2, 2010 · We've used the ping utility in-built into the Junos with the -Interval and -rapid options while trying to estimate the bandwidth capacity of the channel. ” The CLI is familiar, convenient, and polished. Download Junos Config —Use this tool to download the switch's Junos configuration in a text file. The ping test from fxp0 may/may not respond as this is only the management interface. Enter Ctrl+c to interrupt a ping clns command. 20. For Windows targets, use the ansible. 0 on the switch is (I'm assuming it's in the same 10. The correct test is How do I allow ping from Router A loopback (source loopback) to SRX firewall vlan interface or loopback ip address and vice versa? Thanks in advanced. 1. To ping any IP address that is pingable server on the internet, such as Google with "source" like ping 8. Action To send ping packets from the Ethernet interface, use the following Junos OS CLI operational mode command: Sep 24, 2013 · The junos-icmp-ping further qualifies that by narrowing the icmp protocol to just echo-request messages. The similarities between JUNOS CLI and another CLI such as Cisco’s IOS are not what I want to focus on here however; it is their Disable Reporting IP Address and Timestamps in Ping Responses When you issue the ping command with the record-route option, the Routing Engine displays the path of the ICMP echo request packets and the timestamps in the ICMP echo responses by default. The ping command sends Internet Control Message Protocol (ICMP) ECHO_REQUEST messages to elicit ICMP ECHO_RESPONSE messages from the specified host. traceroute (Junos OS Evolved, Through an MPLS LSP) The Junos OS Evolved traceroute command parses MPLS data in the same way as the Linux traceroute command: L=label, E=exp_use, S=stack_bottom, and T=TTL. For targets running Python, use the ansible. This command is useful for diagnosing host and network connectivity problems. Type Ctrl+c to interrupt a ping mpls l2circuit command. Sep 16, 2025 · There are two applications in this functionality: junos-ping and junos-icmp-all, which function similarly but differ in scope. While both accomplish similar networking tasks, their command structures, configuration philosophies, and operational models differ significantly. 8, you would enter the command "ping 8. May 3, 2023 · Final Thoughts In conclusion, the Junos Command Line Interface is a powerful tool that allows network administrators to configure, monitor, and troubleshoot Juniper Networks devices. The device sends a series of Internet Control Message Protocol (ICMP) echo (ping) requests to a specified host and receives ICMP echo responses. 1R4, 15. bzprc ay sm1 wdrc snq4u0b wgmpnr lgb eqqa grnjm uf5o