On QFX5000 Series and EX4600 switches, a high rate of Ethernet pause frames or an ARP packet storm received on the management interface (fxp0) can cause egress interface congestion, resulting in routing protocol packet drops, such as BGP, leading to peering flaps. The following log message may also be displayed:
fpc0 dcbcm_check_stuck_buffers: Buffers are stuck on queue 7 of port 45
This issue only affects the QFX5000 Series products (QFX5100, QFX5110, QFX5200, QFX5210) and the EX4600 switch. No other platforms are affected by this issue.
Affected releases are Juniper Networks Junos OS:
Juniper SIRT is not aware of any malicious exploitation of this vulnerability.
This issue was seen during production usage.
This issue has been assigned CVE-2018-0054 .
The following software releases have been updated to resolve this specific issue: 14.1X53-D47, 15.1R7, 15.1R8, 15.1X53-D233, 16.1R7, 16.2R3, 17.1R2-S9, 17.1R3, 17.2R2-S6, 17.2R3, 17.2X75-D42, 17.3R3, 17.4R2, 18.1R2, 18.2R1, 18.2X75-D5, and all subsequent releases.
This issue is being tracked as PR 1343597 which is visible on the Customer Support website.
Note: Juniper SIRT's policy is not to evaluate releases which are beyond End of Engineering (EOE) or End of Life (EOL).
Software Releases, patches and updates are available at https://www.juniper.net/support/downloads/ .
For BGP, configure ' ether-options no-flow-control ' on the BGP interface.
ether-options no-flow-control
Configure the lossless percentage of ingress shared buffer pool to be greater than the egress shared buffer pool. For example:
[edit class-of-service shared-buffer]
user@switch# set ingress buffer-partition lossless percent <percent>
user@switch# set egress buffer-partition lossless percent <percent>
2018-10-10: Initial publication