This article explains the meaning, cause and solution for the syslog message:
BRCM_COS_HALP(brcm_cos_ng_access_bind_scheduler_map_ifd:2694): Transmit rate configured 7500 is less than minimum supported 8000, wont be honored
This message does not impact traffic. It is fixed in Junos 15.1X53-D56.
If any interface is configured with 10Mbps speed on the switch, this log message is expected. It is triggered by speed configuration change, link down/up or traffic changes. It also occurs If any interface negotiates with a partner that has 10M speed configured.
Check the speed of interfaces with 'show interface extensive ' command and verify the speed.
'show interface extensive
'
user@switch>show interface <interface name> extensive Physical interface: <interafce name>, Enabled, Physical link is Down Interface index: 666, SNMP ifIndex: 511, Generation: 157 Description: Link-level type: Ethernet, MTU: 1514, MRU: 0, Link-mode: Auto, Speed: 10M, BPDU Error: None, MAC-REWRITE Error: None, Loopback: Disabled, Source filtering: Disabled, Flow control: Disabled, Auto-negotiation: Disabled, Remote fault: Offline, Media type: Copper
If the partner has 10M speed and auto-negotiation is configured on the switch end, check the output of the speed on Link Partner.
user@switch>show interface <interface name> extensive Physical interface: <interface name>, Enabled, Physical link is Up Interface index: 712, SNMP ifIndex: 734, Generation: 415 Link-level type: Ethernet, MTU: 1514, LAN-PHY mode, Link-mode: Half-duplex, Speed: Auto, Duplex: Auto, BPDU Error: None, Loop Detect PDU Error: None, MAC-REWRITE Error: None, Loopback: Disabled, Source filtering: Disabled, Flow control: Disabled, Auto-negotiation: Enabled, Remote fault: Online, Media type: Copper, IEEE 802.3az Energy Efficient Ethernet: Disabled Device flags : Present Running Interface flags: SNMP-Traps Internal: 0x4000 Link flags : None CoS queues : 12 supported, 12 maximum usable queues Hold-times : Up 0 ms, Down 0 ms Current address: 2c:21:31:1c:9c:2d, Hardware address: 2c:21:31:1c:9c:2d Last flapped : 2017-02-11 15:57:46 EST (1d 21:09 ago) Statistics last cleared: Never Traffic statistics: Input bytes : 13734076 0 bps Output bytes : 13460733576 11400 bps Input packets: 24020 0 pps Output packets: 106297313 12 pps IPv6 transit statistics: Input bytes : 0 Output bytes : 0 Input packets: 0 Output packets: 0 Input errors: Errors: 239, Drops: 0, Framing errors: 239, Runts: 0, Policed discards: 0, L3 incompletes: 0, L2 channel errors: 0, L2 mismatch timeouts: 0, FIFO errors: 0, Resource errors: 0 Output errors: Carrier transitions: 9, Errors: 0, Drops: 0, Collisions: 0, Aged packets: 0, FIFO errors: 0, HS link CRC errors: 0, MTU errors: 0, Resource errors: 0 Egress queues: 12 supported, 8 in use Queue counters: Queued packets Transmitted packets Dropped packets 0 0 9 0 1 0 0 0 2 0 0 0 3 0 76902 0 8 0 106220407 1426091422 9 0 0 0 10 0 0 0 11 0 0 0 Queue number: Mapped forwarding classes 0 best-effort 1 expedited-forwarding 2 assured-forwarding 3 network-control 8 mcast-be 9 mcast-ef 10 mcast-af 11 mcast-nc Active alarms : None Active defects : None MAC statistics: Receive Transmit Total octets 13734076 13460733576 Total packets 24020 106297313 Unicast packets 867 18805 Broadcast packets 23082 11514726 Multicast packets 71 94763782 CRC/Align errors 239 0 FIFO errors 0 0 MAC control frames 0 0 MAC pause frames 85568 0 Oversized frames 0 Jabber frames 0 Fragment frames 0 VLAN tagged frames 0 Code violations 0 Autonegotiation information: Negotiation status: Complete Link partner: Link mode: Half-duplex, Flow control: None, Remote fault: OK, Link partner Speed: 10 Mbps Local resolution: Flow control: Asymmetric, Flow control tx: Disabled, Flow control rx: Enabled, Remote fault: Link OK, Local link Speed: 10 Mbps, Link mode: Half-duplex Packet Forwarding Engine configuration: Destination slot: 0 (0x00) CoS information: Direction : Output CoS transmit queue Bandwidth Buffer Priority Limit % bps % usec 0 best-effort 75 7500000 75 0 low none 3 network-control 5 500000 5 0 low none 8 mcast-be 15 1500000 15 0 low none 11 mcast-nc 5 500000 5 0 low none Preclassifier statistics: Traffic Class Received Packets Transmitted Packets Dropped Packets best-effort 0 0 0 best-effort 0 0 0 best-effort 0 0 0 best-effort 0 0 0 best-effort 0 0 0 best-effort 0 0 0 best-effort 0 0 0 best-effort 0 0 0 Interface transmit statistics: Disabled MACSec statistics: Output Secure Channel Transmitted Protected Packets : 0 Encrypted Packets : 0 Protected Bytes : 0 Encrypted Bytes : 0 Input Secure Channel Received Accepted Packets : 0 Validated Bytes : 0 Decrypted Bytes : 0
Because of 10MB speed negotiated on an interface, COS transmit queues are set to 7500K, 500K, 1500K, 500K by default which are all less than 8000K.
The switch is notifying that it is capable of more speeds for CoS.
There is no impact to traffic.
The above log messages are fixed in Junos 15.1X53-D56 Junos code.