L2cpd juniper 00% jdhcpd 3 GIGE 1000SX MM Juniper OEM SFP-GE-SX-JEX 850 nm 0. All other interfaces are without any STP, with l2cpd[xxxx]: TOPO_CH: for VLAN xxxx in routing-instance default received on port xxx The issue disapeared when I've set "protocols vstp interface <uplink> disable". Junos: 21. Loop protection increases the efficiency of STP, RSTP, and MSTP by preventing ports from moving into a forwarding state that would result in a loop opening up in the network. 4R3-S2. 0 Apr 3 08:00:11 ACIT-RT01 l2cpd[2014]: TOPO_CH: for Instance 0 in routing-instance default received on port ae0. 18 Configuration: 3 * EX4600 in triangle topology, RSTP enabled on triangle interfaces only. 4R2, the QFX5130-48C switch supports the following firmware-upgrade commands: Hello, I have a SRX 4100 and high CPU "spikes" While troubleshooting, I realised that mib2d & snmp take much utilization, & research showed me that our Check_MK plugin does snmpwalks and that may cause our high CPU, so I temporarly deactivated our plugin for Check_MK and monitored it manually with snmpgets and the CPU spikes were instantly less. This article describes how to fix memory leak issue in SRX due to l2cpd process. MGD means that some Junos Space / configuration / user login is hogging the CPU. An Access of Memory Location After End of Buffer vulnerability in the Layer-2 Control Protocols Daemon (l2cpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated attacker to cause Denial of Service (DoS). JUNOS Packet Forwarding Engine Support (qfx-5) [13. 4R1, when rebooting the device, the Layer 2 (L2) applications l2ald, l2ald-agent, l2cpd, and l2cpd-agent are Optimize reboot times by disabling default initialization and startup of certain Layer 2 applications (ACX7024, ACX7100-32C, ACX7100-48L, ACX7348, ACX7509, PTX10001-36MR, PTX10003, PTX10004, PTX10008, and PTX10016)—Starting in Junos OS Evolved 23. It is setup to act like a router at the moment. 00% l2cpd 3 root 1 -8 0 0K 16K - 0 1:16 0. I've only seen one similar post on reddit. L2CPD : Unable to parse vlan-id-list for IFL xe-0/0/10. And once again the newer EX-2300 switches are causing issues. Continued exploitation can lead to memory exhaustion and thereby a Denial of Service (DoS). 2X51-D10. l2cpd crashes (CVE-2024-21618) JSA75750 : 2024-04 Security Bulletin: Junos OS: MX Series with SPC3, and SRX Series: If specific IPsec parameters are negotiated iked will crash due to a memory leak (CVE-2024-21609) Start here to evaluate, install, or use the Juniper Networks® SRX5400 Services Gateway. RE: EX 2300 CPU usage above 70%. 54:4b:8c:47:84:00 Root cost : 20000 Root port : ge-0/0/1 Description. The following log messages are logged by l2cpd when there's an MSTP topology change: Problem. 00% g_up 40 root 1 171 52 0K 16K pgzero 0 0:56 0. the l2cpd core might be seen on reboot. Spanning-tree protocol loop protection enhances the normal checks that spanning-tree protocols perform on interfaces. Reinicie un proceso de Junos OS. 4R3-EVO, 22. Symptoms. 6 and EX 2300. 4R1, when rebooting the device, the Layer 2 (L2) applications l2ald, l2ald-agent, l2cpd, and l2cpd-agent are . 6] Thks for your help. This article explains the meaning of the following message logged by l2cpd: l2cpd[17535]: %DAEMON-1-TOPO_CH: for Instance 0 in routing-instance default received on port xe-x/x/x. Yes, theser are false positive and Juniper TAC/Engineering team is aware about this and work is in progress. Loop protection performs a specified action when BPDUs are not received on a Hi all,Trying to setup a ring between 6 EX3400 which are not on the same physical location. KB22775 : [EX] Verify the flavor of the Nonstop bridging uses the same infrastructure as graceful Routing Engine switchover (GRES) to preserve interface and kernel information. The l2cpd process is responsible for layer 2 control protocols, such as STP, RSTP, MSTP 1853 root 1 4 0 31440K 13884K kqread 0 1:18 0. Please note, this is not an exhaustive list, disabling L2CPD may affect other protocols and services that rely upon L2CPD daemon to be present. 0H 3. 6] JUNOS Enterprise Software Suite [13. This is a day-1 behaviour. 4R1, when rebooting the device, the Layer 2 (L2) applications l2ald, l2ald-agent, l2cpd, and l2cpd-agent are Start here to evaluate, install, or use the Juniper Networks® SRX5400 Services Gateway. . 98% l2cpd. PR Number Synopsis On all Junos platforms, if Link Layer Discovery Protocol(LLDP) is enabled on 'interface all' and some AE interface at the same time, the Layer 2 Control Protocol process (l2cpd) might crash when lldp is removed from the AE interface. We can see the below in the log messages multiple times: Nov 12 18:00:07 2024 mgmt1-rbs l2cpd[69354]: JTASK_OS_MEMHIGH: Using 115425 KB of memory, 85 percent of available In all Junos and Junos Evo platform, there is a one shot timer created for LLDP Configure Layer 2 control protocols to enable features such as Layer 2 protocol tunneling (L2PT) and nonstop bridging. root@Switch> show spanning-tree bridge detail STP bridge parameters Routing instance name : GLOBAL Context ID : 0 Enabled protocol : RSTP Root ID : 4096. The pkid is responsible for the certificate verification. I tried updating all of our Juniper Devices to the latest version as of the time of writing: (22. The impact of the l2cpd crash is reinitialization of STP protocols (RSTP, Problem. We are working on getting notifications for ports that go into a BPDU state when a loop happens. 2R3-S8-EVO, 21. Each EX2300 switch includes an ASIC-based Packet Forwarding Engine (PFE) with an integrated CPU to consistently deliver wire-rate forwarding, even with all control plane features enabled. An Improper Handling of Exceptional Conditions vulnerability in Juniper An Access of Memory Location After End of Buffer vulnerability in the Layer-2 An Improper Check or Handling of Exceptional Conditions vulnerability in the Layer-2 control protocols daemon (l2cpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker to cause a Denial of Service (DoS). 12 root -72 - 0K 304K WAIT 125. I have also cleared the MAC Address table from all (Access Switches), as well as ARP on the (Router/Firewall). This will be a An Improper Check or Handling of Exceptional Conditions vulnerability in the Layer-2 control protocols daemon (l2cpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker to cause a Denial of Service (DoS). 00% g_down 1875 root 7 8 0 97404K 7076K nanslp 0 0:47 0. For example, L2ALD, MRVP, EVPN traffic, etc. 4R1-S1, when rebooting the device, the Layer 2 (L2) applications l2ald, l2ald-agent, l2cpd, and l2cpd-agent are initialized and started only if any of the following configuration hierarchy levels contain any configuration statements: # commit check error: Check-out failed for Layer 2 Control Protocol process (/usr/sbin/l2cpd) without details error: configuration check-out failed. >restart l2cpd-service all-members l2cpd is responsible for - STP, MVRP, LLDP/DCBX, L2PT. JSA79171 : 2024-04 Security Bulletin: Junos OS and Junos OS Evolved: l2cpd crash upon receipt of a specific TLV (CVE-2024-30380) JSA82988 : 2024-07 Security Bulletin: Junos OS: SRX Series: If DNS traceoptions are configured in a Restart a Junos OS process. Note: Juniper SIRT's policy is not to evaluate releases which are beyond End of Engineering (EOE) or End of Life (EOL). Severity Assessment Information for how Juniper Networks uses CVSS can be found at KB 16446 "Common Vulnerability Scoring System (CVSS) and Juniper's Security Advisories. 3600 seconds) An Improper Handling of Exceptional Conditions vulnerability in Juniper Networks Junos OS and Junos OS Evolved allows an adjacent unauthenticated attacker to cause a Denial of Service (DoS), which causes the l2cpd process to crash by sending a specific TLV. 9H 2. Display information about software processes that are running on the router or switch and that have controlling terminals. 4R3-S4. On all Junos and Evo platforms, there is a one-shot timer created for LLDP (Link Layer Discovery Protocol), which may not get freed before creating the new one-shot timer because of which there is 160 bytes of leak every minute. A buffer size validation vulnerability in the overlayd service of Juniper Networks Junos OS may allow an unauthenticated remote attacker to send specially crafted packets to the device, triggering a partial Denial of Service (DoS) condition, or leading to remote code execution (RCE). 6] JUNOS Web Management [13. However, nonstop bridging also saves Layer 2 Control Protocol (L2CP) information by running the Layer 2 Control Protocol process (l2cpd) on the backup Routing Engine. The impact of the l2cpd crash is reinitialization of STP protocols (RSTP, I've tried restarting the ntp service & l2cpd service, logs still appear. Description . 0 error: configuration check-out failed. The Juniper Networks ® EX2300 line of Ethernet switches offers a compact, high-performance solution for supporting today’s converged network access deployments. 2. 32767 Symptoms. JSA75759 : 2024-04 Security Bulletin: Junos OS and Junos OS Evolved: When LLDP is enabled and a malformed LLDP packet is received, l2cpd crashes (CVE-2024-21618) JSA79095 : 2024-04 Security Bulletin: Junos OS and Junos OS Evolved: A malformed BGP tunnel encapsulation attribute will lead to an rpd crash The l2cpd process crash may be observed when disabling RSTP on an interface Product-Group=junos: On all Junos and Junos Evolved platforms, the l2cpd process may crash and generates the core when disabling RSTP (Rapid Spanning Tree Protocol) on an interface. STP: Reconvergence will happen. Timeout is configured under protocols layer2-control: user@switch# set protocols layer2-control bpdu-block disable-timeout ? Possible completions: <disable-timeout> Disable timeout for BPDU Protect (10. 0 A buffer overflow vulnerability in the TCP/IP stack of Juniper Networks Junos OS allows an attacker to send specific sequences of packets to the device thereby causing a Denial of Service (DoS). L2CPD core found with the message "ERP_STP_INSTANCE_START_VAL failed" L2CPD core found with the message "ERP_STP_INSTANCE_START_VAL failed" The l2cpd crash might be seen if adding/deleting ERP config and then restart l2cpd Product-Group=junos : Core files are generated if you add or delete ERP configuration multiple times and restarted l2cpd or rebooted the box. ACX Series routers, MX Series routers, PTX Series routers, EX Series switches, and QFX Series switches support spanning-tree protocols that prevent loops in a network by creating a tree topology (spanning-tree) of the entire bridged Hello everybody, I'm configuring an EX2200-C with firmware 15. The SRX5400 is a 480 Gbps firewall well-suited to securing large enterprise campuses and data centers, either for edge or core security deployments. 4R1). On all Junos OS and Junos OS Evolved platforms, when LLDP is enabled on a specific interface, and a Mar 13 08:22:04 Juniper_SRX_100 init: l2cpd-service is thrashing, not restarted. 00% pfed 1864 root 2 40 0 108M 28624K select 341:01 0. JSA75759 : 2024-04 Security Bulletin: Junos OS and Junos OS Evolved: When LLDP is enabled and a malformed LLDP packet is received, l2cpd crashes (CVE-2024-21618) JSA79094 : 2024-04 Security Bulletin: Junos OS and Junos OS Evolved: A specific EVPN type-5 route causes rpd crash (CVE-2024-30394) Nonstop bridging (NSB) helps preserve interface and kernel information on Routing Engine switchover, and synchronizes all protocol information for NSB-supported Layer 2 protocols between the primary and backup Routing Engines. ). root@RT01> show log Juniper SIRT is not aware of any malicious exploitation of this vulnerability. Workaround is to restart l2cpd once VC is split. PR Number Synopsis An Improper Check or Handling of Exceptional Conditions vulnerability in the Layer-2 control protocols daemon (l2cpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker to cause a Denial of Service (DoS). 00% httpd Configure the options available for the filter-interfaces statement to specify the interfaces that you want to exclude from the output of SNMP Get and GetNext requests performed on interface-related MIBs. Chassisd spiking may mean that the issue is related to interface delete / reconfigure / temperature of device or some chassis operations. This gradual memory leak in l2cpd may lead to l2cpd process crash. The following log messages are logged by l2cpd when there's an MSTP topology change: Juniper Networks System Log Explorer enables you to search for and view information about various System Log Messages. 3R3-EVO, 21. Problem. The l2cpd crash might affect all the protocols running under it (such as X-STP, LLDP, ERP, MVRP, etc. 00% pagezero 4 root 1 -8 0 0K 16K - 0 0:55 0. PR Number Synopsis Clear a bridge protocol data unit (BPDU) error condition caused by the detection of a possible bridging loop from Spanning Tree Protocol (STP) operation. Use this command to track the percent utilization statistics per second for the past 60 seconds for each FPC slot and PIC. When LLDP is enabled and a malformed LLDP packet is received, l2cpd crashes (CVE-2024-21618) JSA79095 : 2024-04 Security Bulletin: Junos OS and Junos OS Evolved: A malformed BGP tunnel encapsulation attribute will lead to Note: Juniper SIRT's policy is not to evaluate releases which are beyond End of Engineering (EOE) or End of Life (EOL). may also cease to operate. This issue occurs when specific LLDP packets are received and 1861 root 1 4 0 65700K 37552K kqread 363:04 0. 0 An Improper Validation of Specified Quantity in Input vulnerability in the Layer-2 control protocols daemon (l2cpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker who sends specific LLDP packets to cause a Denial of Service(DoS). 3600 seconds) The Juniper Networks ® EX2300 line of Ethernet switches offers a compact, high-performance solution for supporting today’s converged network access deployments. Apr 3 07:59:41 ACIT-RT01 l2cpd[2014]: TOPO_CH: for Instance 0 in routing-instance default received on port ae0. Clear a bridge protocol data unit (BPDU) error condition caused by the detection of a possible bridging loop from Spanning Tree Protocol (STP) operation. 98% authd I tried to check the PR numbers and release notes for issues but I didn't find anything promising for Junos: 20. 1 but i'm facing a strange problem. Dhcp & dhcp relay is not configured in this SRX. However within this time l2cpd comes up in new master RE and reads the old sysctl value. This issue was discovered during production use. l2cpd crashes (CVE-2024-21618) JSA75750 : 2024-04 Security Bulletin: Junos OS: MX Series with SPC3, and SRX Series: If specific IPsec parameters are negotiated iked will crash due to a memory leak (CVE-2024-21609) Feb 1 02:06:03 srx240b init: l2cpd-service (PID 1368) exited with status=0 Normal Exit Feb 1 02:06:03 srx240b init: l2cpd-service is thrashing, not restarted Feb 1 02:06:04 srx240b init: web-management (PID 1370) terminated by signal number 11. Upon a failed verification, the pkid uses all CPU resources and Reinicie um processo do Junos OS. " Modification History 2024-09-13: Minor formatting change to cvss field. set protocols protection-group ethernet-ring RING1 guard-interval 2000 set protocols protection-group ethernet If PFEX and L2CPD values are high, it may mean that several MAC move / flood / STP related events are happening on the device. This topic applies only to the J-Web Application package. The l2cpd crash might be seen if adding/deleting ERP config and then restart l2cpd Product-Group=junos : Core files are generated if you add or delete ERP configuration multiple times and restarted l2cpd or rebooted the box. 6] JUNOS Host Software [13. 00% ipfd 1915 nobody 1 76 0 13084K 5600K select 0 0:43 0. KB29773 : [MX/EX/QFX] Meaning of log message: l2cpd - %DAEMON-1-TOPO_CH: for Instance 0 in routing-instance default received on port xe-x/x/x. If this issue is happened, l2cpd does not recover again and generates core file continuously. The "faulty" sfp should be the one from "FINISAR CORP. Optimize reboot times by disabling default initialization and startup of certain L2 applications (ACX7332)—Starting in Junos OS Evolved Release 23. Till we get a fix you may supress these logs as in KB9382 On all Junos OS and Junos OS Evolved platforms, when LLDP is enabled on a specific interface, and a malformed LLDP packet is received, l2cpd crashes and restarts. An Out-of-bounds Read vulnerability in the processing of specially crafted LLDP frames by the Layer 2 Control Protocol Daemon (l2cpd) of Juniper Networks Junos OS and Junos OS Evolved may allow an attacker to cause a Denial of Service (DoS), or may lead to remote code execution (RCE). An Improper Validation of Specified Quantity in Input vulnerability in the Layer-2 control protocols daemon (l2cpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker who sends specific LLDP packets to cause a Denial of Service(DoS). Logs only showing - "l2cpd[13838]: L2CPD: read configuration-db failed". 2024-04-10: Initial Publication I've tried restarting the ntp service & l2cpd service, logs still appear. 2R1-EVO, and all subsequent releases. Till we get a fix you may supress these logs as in KB9382 Problem An Improper Check for Unusual or Exceptional Conditions vulnerability in the Public Key Infrastructure daemon (pkid) of Juniper Networks Junos OS allows an unauthenticated networked attacker to cause Denial of Service (DoS). 0 Apr 3 08:00:09 ACIT-RT01 l2cpd[2014]: TOPO_CH: for Instance 0 in routing-instance default received on port ae0. Perform a unified in-service software upgrade (unified ISSU) to a more recent version of Junos OS Evolved. This is the setting of erps. A unified ISSU involves minimal disruption of the control plane and data plane traffic. On all Junos OS and Junos OS Evolved platforms, when LLDP is enabled on a specific interface, and a malformed LLDP packet is received, l2cpd crashes and restarts. 96% intr{swi1: netisr 0} 17539 root 21 0 525M 144M select 155. 1R2-EVO, 22. I want to verify whether the topology number is increasing in a Juniper Networks EX Series switch due to a change in the spanning-tree environment. 4R1-S1, when rebooting the device, the Layer 2 (L2) applications l2ald, l2ald-agent, l2cpd, and l2cpd-agent are initialized and started only if any of the following configuration hierarchy levels contain any configuration statements: Firmware upgrade support (QFX5130-48C)—Starting in Junos OS Evolved Release 23. Optimize reboot times by disabling default initialization and startup of certain Layer 2 applications (ACX7024, ACX7100-32C, ACX7100-48L, ACX7348, ACX7509, PTX10001-36MR, PTX10003, PTX10004, PTX10008, and PTX10016)—Starting in Junos OS Evolved 23. After issuing set system processes l2cpd-service disable , RSTP, MSTP, VSTP, ERP, xSTP and ERP protocols will cease to operate. The software is upgraded by using an application-level restart or warm restart instead of a reboot, when possible. Use the request system software validate-restart command before using the Apr 3 07:59:41 ACIT-RT01 l2cpd[2014]: TOPO_CH: for Instance 0 in routing-instance default received on port ae0. Display the services processing unit (SPU) percent utilization for all FPC slots over the last 60 seconds. When a malformed LLDP packet is received, l2cpd will crash and restart. 6] JUNOS py-base-i386 [13. 32767. Junos OS Evolved: 21. 1538482 L2CPD : Unable to parse vlan-id-list for IFL xe-0/0/10. 0 Learn about the issues fixed in this release for MX Series routers. Mar 13 08:22:08 Juniper_SRX_100 /kernel: STP: STP IPC op 1 (ForwardingState) failed, err 1 (Unknown) Mar 13 08:22:08 Juniper_SRX_100 last message repeated 7 17536 root 28 0 328M 34828K RUN 28. Both the LLDP service and the web management interface don't start: if I "restart" the processes, the system replies with: This article describes how to fix memory leak issue in SRX due to l2cpd process. Juniper rep has never seen any errors like that, either. 0 REV 01 . LLDP Out-of-Bounds Read vulnerability in l2cpd (CVE-2021-0277) JSA11218 : 2021-10 Security Bulletin: Junos OS and Junos OS Evolved: RPD core upon Optimize reboot times by disabling default initialization and startup of certain L2 applications (ACX7332)—Starting in Junos OS Evolved Release 23. " - I have read in another thread, that some "LX10" Gbics Description. We can see the below in the log messages multiple times: Nov 12 18:00:07 2024 mgmt1-rbs l2cpd[69354]: JTASK_OS_MEMHIGH: Using 115425 KB of memory, 85 percent of available In all Junos and Junos Evo platform, there is a one shot timer created for LLDP If PFEX and L2CPD values are high, it may mean that several MAC move / flood / STP related events are happening on the device. 8H 6. I have the cabling sorted but having issues with the config side of A Missing Release of Memory after Effective Lifetime vulnerability in the Layer-2 control protocols daemon (l2cpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker to cause a memory leak. An Improper Handling of Exceptional Conditions vulnerability in Juniper Networks Junos OS and Junos OS Evolved allows an adjacent unauthenticated attacker to cause a Denial of Service (DoS), which causes the l2cpd process to crash by sending a specific TLV. set protocols protection-group ethernet-ring RING1 guard-interval 2000 set protocols protection-group ethernet Optimize reboot times by disabling default initialization and startup of certain Layer 2 applications (ACX7024, ACX7100-32C, ACX7100-48L, ACX7348, ACX7509, PTX10001-36MR, PTX10003, PTX10004, PTX10008, and PTX10016)—Starting in Junos OS Evolved 23. 00% l2cpd 1847 root 1 40 0 41232K 23148K select 349:52 0. 6] JUNOS Routing Software Suite [13. zsmurxvhkcttkgqzczgkbklgkndgwahvkwgvjsck