- Introduction
- play_arrow Junos OS Release Notes for ACX Series
- play_arrow What's New
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- Migration, Upgrade, and Downgrade Instructions
- play_arrow Junos OS Release Notes for cSRX
- play_arrow What's New
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- play_arrow Junos OS Release Notes for EX Series
- play_arrow What's New
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- Migration, Upgrade, and Downgrade Instructions
- play_arrow Junos OS Release Notes for JRR Series
- play_arrow What's New
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- Migration, Upgrade, and Downgrade Instructions
-
- play_arrow What's New
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- Migration, Upgrade, and Downgrade Instructions
-
- play_arrow What's New
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- Migration, Upgrade, and Downgrade Instructions
- play_arrow Junos OS Release Notes for NFX Series
- play_arrow What's New
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- Migration, Upgrade, and Downgrade Instructions
- play_arrow Junos OS Release Notes for PTX Series
- play_arrow What's New
- What's New in 21.2R2
- play_arrow What's New in 21.2R1
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- Migration, Upgrade, and Downgrade Instructions
- play_arrow Junos OS Release Notes for QFX Series
- play_arrow What's New
- play_arrow What's New in 21.2R2
- play_arrow What's New in 21.2R1
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- Migration, Upgrade, and Downgrade Instructions
- play_arrow Junos OS Release Notes for SRX Series
- play_arrow What's New
- What's New in 21.2R2
- play_arrow What's New in 21.2R1
- Application Identification (AppID)
- Authentication and Access Control
- Flow-Based and Packet-Based Processing
- Interfaces
- J-Web
- Juniper Advanced Threat Prevention Cloud (ATP Cloud)
- Junos Telemetry Interface
- Network Management and Monitoring
- Software Installation and Upgrade
- Securing GTP and SCTP Traffic
- VPNs
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- Migration, Upgrade, and Downgrade Instructions
- play_arrow Junos OS Release Notes for vMX
- play_arrow What's New
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- Upgrade Instructions
- play_arrow Junos OS Release Notes for vRR
- play_arrow Junos OS Release Notes for vSRX
- play_arrow What's New
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- Migration, Upgrade, and Downgrade Instructions
- Licensing
- Finding More Information
- Documentation Feedback
- Requesting Technical Support
- Revision History
Open Issues
Learn about open issues in this release for MX Series routers.
For the most complete and latest information about known Junos OS defects, use the Juniper Networks online Junos Problem Report Search application.
Class of Service (CoS)
In a Junos Fusion deployment, dynamic removal and addition of a logical interface under interface-set might lead to failure of the traffic control profile on the interface-set. PR1593058
Traffic might be dropped upon deactivating or activating the target-mode using the
set chassis satellite-management fpc target-mode
statement. PR1593059IEEE 802.1 rewrite rule might not work on the MPC10 line card. PR1604943
EVPN
There might be a few duplicate packets in an A/A EVPN scenario when the remote PE device sends packets with IM label due to MAC not being learned on the remote PE device but being learned on the A/A local PE device. The non-DF sends the IM-labeled encapsulated packet to the PE-CE interface after the MAC lookups instead of dropping the packet, which causes duplicate packets on the CE side. PR1245316
PBB-EVPN PE cannot learn remote CE MAC address due to ARP suppression enabled. PR1529940
On the MX960 router, bridge mac-table learning entries are not as expected for the EVPN-VXLAN-1 routing instance. PR1600310
EVPN local ESI MAC limit might not be effective in some scenarios. PR1619299
Device does not become ready for switchover. PR1620966
Flow-based and Packet-based Processing
The 512 or larger anti-replay window size is recommended for the IPv4 or IPv6 traffic over IPsec tunnel when you enable fat-tunnel. PR1470637
Forwarding and Sampling
Traffic drop occurs and filter does not hit as expected for the match condition traffic class with the
flt
command enabled. PR1573350
General Routing
On MX104 router, CPU gets busy with the sporadic L2C access error message and false alarms. PR1223979
Commit check for validating the interface name is not available for the
show interface
command. PR1306191The cfmd process might generate a core file if you add or remove multiple iterations of configurations. PR1620651
The rpd process might crash if you resolve the BGP route over the same prefix protocol next-hop in the inet.3 table that has both RSVP and LDP routes. PR1458595
In DNS filtering, when you send the DNS requests from the server and implicit filters as well as routes to the service PIC are configured, it causes the DNS packets to loop. PR1468398
The following error messages occurs:
PR1492162content_copy zoom_out_mapunable to set line-side lane config (err 30)
The backup Routing Engine reboots because of the power cycle or failure when you perform the offline and online operations on CB1. PR1497592
Transit IPv4 traffic forwarding over BGP SR-TE might not work. PR1505592
During flooding, MAC is learnt only on normal access port but not on the aggregated Ethernet interface trunk port. PR1506403
Changing the scaled firewall profiles on the fly does not release the TCAM resources as expected. PR1512242
Active sensor check fails while checking the
show agent sensors |display xml
command. PR1516290Multiple FRUs disconnection alarms might be displayed post the firmware upgrade. PR1529710
The MACsec PICs might stay offline in the new primary after ISSU. PR1534225
On MX2020 router, the next hops are less than a total of nhdb 4MPOST GRES. PR1539305
PTP to PTP noise transfer test fails. PR1543982
The Packet Forwarding Engine statistics does not shown GNF in the sublc mode that has the Packet Forwarding Engine mapping from non-zero Packet Forwarding Engine. PR1547890
During power cycle, the 100G port down issue occurs occasionally on et-0/0/54 and et-0/0/55 with INNOLIGHT 100G-AOC cables. PR1548525
The rpd process might generate core file rarely in case of heavy network when telemetry streaming is in progress. PR1552816
The TCP session is not establised on DCPFE restart on the primary node. PR1557607
ICMP error packet does not have relevant header when you configure the packets with DSLite, appropriate ICMP ALG name, and one UDP application name. PR1616633
On MX960 routers, link deviance tolerance becomes more than the expected range while verifying the chash load balance after including more prefixes to the BGP chash. PR1621529
Traffic drop occurs while verifying the flow of tagged traffic over the Layer 3 interface. PR1622514
Port speed gets displayed as 100G even though the chassis configuration is set for 40G. PR1623237
On MX10008 routers, the GRE keepalive adjacency state is in the
Down
state even though the GRE tunnel is in theUp
state. PR1559200IGMP joins where there are more than expected value while verifying the IGMP snooping membership in the CE router. PR1560588
The session status becomes nonresponsive in the
Invalid
state after the core-facing link fails in the primary PE devices. PR1562387Line card gets moved from SLC to full line card mode, the FPC becomes nonresponsive due to spmb not replying in an extremely rare scenario. PR1563050
One of the SLCs can be momentarily observed with chassis connection dropped message after configuration changes between asymmetric and symmetric modes. PR1564233
The Layer 2 input or output multicast counters do are not get accounted into the reporting file. PR1566436
The 0/0/0 pic type F050 does not support the log messages generated under chassisd and other messages in logs. PR1566440
Stale TCNH entries occurs in the new primary Routing Engine post switchover with NSR, even though all the prpd routes are deleted. PR1566666
The sub line cards (SLC) might reboot after loading the configured inline services and services along with the dfwd filters. PR1567313
MAC addresses might not be relearned successfully after MAC address ages timeout. PR1567723
The
Tunnel id: does not exist
message displays the Packet Forwarding Engine when you execute theshow dynamic-tunnel database statistics
command after deactivating the routing-options dynamic-tunnel with high scale of tunnels. PR1568284Unexpected multicast traffic streams after enabling EVPN occurs. PR1570689
Packets with the MAC address of eth0 and macvlan0@eth0 interface might be sent out to the management interface on the VMHOST platform with NG-RE. PR1571753
The fxpc process might crash and cause traffic loss in the IFBD scenario. PR1572305
After Junos OS upgrade, the MAC address changes on the MPC9E PIC1 interfaces. Static MAC configurations might be affected. PR1575009
Verification of NAT POOL DETAIL fails while verifying the SIP and bi-directional mapping with the block-size configured as default. PR1576398
The rpd process might generate core file in the subscribers setup with scaled around 32,000 connections. PR1577085
The OSPF session over IRB might not come up in the EVPN-VXLAN scenario. PR1577183
After FPC restarts, the static MACs configured over the aggregated Ethernet interface does not get programmed in forwarding, causing flooding of traffic. PR1581325
On simulating, the kernel crashes to trigger BSYS Routing Engine switchover and the SLCs or FPCs stay in the
Present
state while the GNFs becomes unreachable. PR1584478On the MPC10E line cards, classifier and rewrite does not support on the LT interface with ethernet-ccc/ethernet-bridge encapsulation. PR1585374
BGP-CT over SRTE occurs when option C is used at ASBRs. PR1586636
NAT EIM mapping is created even for out to in the FTP ALG child sessions. PR1587849
The
show services count
command on the vms interface is not as expected while you send the FTP traffic from public side after configuring with NAPT44+EIM+APP+PCP. PR1588046On the MPC11 line cards, the aftd process crashes at
dfw_term_dictionary_get_next (term=0x0, dfw=0x7f1431da34c0)
at ../../../../../src/pfe/common/applications/dfw/dfw_term.c:1460. PR1589619Minor traffic drops during MBB of RSVP LSP without the
optimize-adaptive-teardown
statement occurs. PR1590656On MX2020 and MX2010 routers, many ppe traps occurs during iterative enhanced mode ISSU on DUT with scaled pseudowire headend termination configuration on the MPC11E line card. PR1593335
The
aftd-trio[13014]: [Error] IF:IfdCfgMsg, ifd not found, ifdIndex:2399
syslog error messages during subLC bootup occurs. PR1594816The Layer 2 BUM traffic received from across WAN gets dropped in DCI-GW due to
dlu.ucode.discard
trapstats with shared-tunnels configurations in the DCI-GW nodes. PR1597181FPCs state becomes nonresponsive at
Announce offline
state when you perform multiple offline or online for FPCs. PR1598102The fpc process generates core file after longevity test. PR1599469
During the phase 2 of the Node Slicing-SLC-FHP, the SLC action restarts and becomes nonresponsive in the
Present
state and the FHP action timesouts. PR1600559The process generates frame stuck messages when you add the MPC11E line card subLC to GNF. PR1600749
The BFD session flaps on the irb interface. PR1604150
After GRES (NSR) switchovers from the Routing Engine 1 to Routing Engine 0, then Routing Engine 1 reboots the system with the following error message:
PR1604299content_copy zoom_out_mapSYSTEM_ABNORMAL_SHUTDOWN: System abnormally shut down
When two fabric planes are offlined or onlined, then the system generates
Destination Error
error message for the one of the plane. PR1605770Duplicate syslog messages gets displayed for IPv4 and IPv6 sessions after the Configure NAT Services with 2 service sets (next-hop style) one for NAPT44 and another for NAPT64. PR1614358
When FPC is online, the FPC 1 powers off due to power budgeting. PR1607147
When bringing down the primary path by injecting the Packet Forwarding Engine, error message gets generated with FRR in 900+ mili-seconds. PR1609768
The
show network-agent statistics
command displays theNode-name : SYS_NAME_UNAVAIL
message and component ID does not display correct value for the cmerror sensor. PR1610325In some NAPT44 and NAT64 scenarios, duplicate
SESSION_CLOSE
syslog message appears. PR1614358Traffic might be interrupted when you change the configuration from the AMS warm-standby to AMS deterministic NAT. PR1597386
MPLS
Single hop BFD sessions on client IS-IS flaps during GRES. PR1541814
The Amnesiac mode appears after a downgrade from Junos OS Release 18.2X75-D65 to 18.2X75-D521 downgrades. PR1546447
Sometimes RPD might crash if you configure the express segments with the SRTE underlay protocol. PR1613372
The LSP might fail to be established when you enable the ISIS-TE or OSPF-TE. PR1575060
The rpd process generates core file if you configure the
use-for-shortcut
command on the SR-TE tunnel, which uses the SR Algo 0 Prefix SID. PR1578994When the aggregated Ethernet interface flaps, the rpd process remains hundred percent and all the LSPs do not come up. PR1595853
Sometimes MPLS LSP might go down due to a timing issue when a protected link goes down. PR1598207
After GRES (NSR), switchovers on the new primary Routing Engine occurs with JTASK_SCHED_SLIP for 161 seconds. PR1600159
The next-hop update takes around 75 seconds in the forwarding-table when the primary aggregated Ethernet interface goes down towards core. PR1610620
Multicast
The rpd process generates core file at
rt_iflnh_lookup_and_set_nhid,krt_process_comp_nh,krt_build_fwd_nh_from_rnh_msg,krt_decode_nexthop_msg
. PR1588128
Platform and Infrastructure
MPLS packet is classified as control traffic. PR1010604
The
commit synchronize
command might fail due to kernel socket becoming nonresponsive. PR1027898FPC might crash due to MAC-move between two interfaces under the same bridge domain. PR1607767
The vmxt_lnx process generates a core file at
dfw_set_action_discard dfw_parse_action_tlv dfw_add_match_or_action
. PR1608165The MX Series router might drop packets larger than the tunnel interface MTU as tail drops in an egress queue. PR1386350
Arrival rates do not appear at the system level when you configure the global-disable. PR1438367
Loss of traffic on switchover occurs when you use filter applied on the child logical interface. PR1487937
On MX480 router, during the verification of GRES and NSR functionality with VXLAN feature, the convergence is not as expected in the Layer 2 DOMAIN to Layer 3 VXLAN. PR1520626
The vmxt_lnx process generates the core file at
KtreeSpace::FourWayLeftAttachedNode::getNextDirty Trinity_Ktree::walkSubTree Trinity_Ktree::walkSubTree
. PR1525594The offer message from the server reaches the relay agent. However, the message does not get forwarded to IRBs on which clients are connected. PR1530160
On MX480 router, expected probes do not occur when you configure and test the Packet Forwarding Engine based-RPM for the probe type icmp-ping. PR1556697
On MX960 router, ethernet-output-bytes are not in the expected range while verifying the Ethernet MAC level with both IPv4 and IPv6 traffic for VLAN tagged interfaces. PR1579797
Routing Protocols
Interoperability issue occurs in the draft-rosen MVPN. PR993870
Routing process crashes on MX routers. PR1620463
The
SCP
command with the routing instance (-JU) is not supported. PR1364825On MX2010 router, the BFD session on the IS-IS step up flaps during the ISSU and FRU upgrade stage. PR1453705
High CPU utilization by BGP I/O thread on the primary Routing Engine might occur if you enable NSR on a large-scale BGP setup. PR1488984
On MX960 router, the backup path fails to install in the LAN scenario and breaks the SR-MPLS for LAN when you configure more than four end-x SIDs on the interface. PR1512174
Conformance issues
draft-ietf-idr-bgp-ext-opt-param
occurs. PR1554639The routes do not get copied from the transport ribs (junos-rti-tc-200.inet.3) to bgp.transport.3 in the device with transport. PR1556632
A single hop BFD session over IRB interface works in the centralized mode if the VPLS instance the IRB belongs to has only LSI interfaces bound to VPLS pseudowires and has no local non-tunnel attachment circuits. PR1563947
SHA-1 system login password format are not accepted post upgrade. PR1571179
Multiple single-hop BGP sessions on different links using the same link-local address occur. PR1575179
The unexpected CSPF link down or deleted events on LSPs occur. PR1576818
On MX480 router, the SLIP messages appears while testing the inline GRE reassembly feature with the GRE interface scaling. PR1581042
Unified Threat Management (UTM)
There is no counter for juniper-local default action. PR1570500
User Interface and Configuration
Commit fails for the backup Routing Engine for the deactivated
MPLS lsp priority
command. PR1519367The mgd process might crash when you execute the
image upgrade
command. PR1557628The commitd process generates a core file at
cbsd_util.c:cbsd_db_open:203
along with the load override. PR1569607The dfwc and dcd processes might crash when you perform a commit-check after a previously terminated (with ctrl+c) commit-check. PR1600435