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[MX] VLANTaggedFrames counter shows 0 on 1G interface of MIC-3D-20GE-SFP

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Article ID: KB24313 KB Last Updated: 02 May 2013Version: 2.0
Summary:

This article describes the expected behavior of the VLAN frame counter on 1G interface of the MIC-3D-20GE-SFP.

Symptoms:

The MIC-3D-20GE-SFP hardware VLAN frames counter is always 0.

When 1 GE interface of MIC MIC-3D-20GE-SFP is used with the following configuration, "show interface < > extensive" of the respective MIC-3D-20GE-SFP doesn't show any "VLAN tagged frames" under "MAC statistics". However, when 10 GE interface of MIC "MIC-3D-4XGE-XFP" or "MIC-3D-2XGE-XFP" is used, the output of "show interface < > extensive" will show ""VLAN tagged frames" under "MAC statistics", and they are incrementing properly.

lab# show
vlan-tagging;
unit 0 {
    vlan-id 100;
    family inet {
        address 100.100.100.1/24;
    }
}


Example output:

lab@mx480-2-re0# run show interfaces xe-5/2/0 extensive | match vla
VLAN tagged frames 7991 <<<<<<<
VLAN-Tag [ 0x8100.2500 ] In(pop) Out(push 0x8100.2500)
Encapsulation: VLAN-VPLS
Flags: SNMP-Traps 0x4004000 VLAN-Tag [ 0x0000.0 ] Encapsulation: ENET2

lab@mx480-2-re0# run show interface ge-0/0/1 extensive | match vla
VLAN tagged frames 0 <<<<<<<<<
Flags: SNMP-Traps 0x4000 VLAN-Tag [ 0x8100.100 ] Encapsulation: ENET2
Flags: SNMP-Traps 0x4004000 VLAN-Tag [ 0x0000.0 ] Encapsulation: ENET2

lab@mx480-2-re0# run show chassis hardware
Hardware inventory:
Item Version Part number Serial number Description
Chassis JN119C5A3AFB MX480
Midplane REV 05 710-017414 ACAA7551 MX480 Midplane
FPM Board REV 02 710-017254 YS2158 Front Panel Display
PEM 0 Rev 06 740-029970 QCS1049U028 PS 1.4-2.52kW; 90-264V AC in
PEM 1 Rev 06 740-029970 QCS1049U017 PS 1.4-2.52kW; 90-264V AC in
PEM 2 Rev 06 740-029970 QCS1049U00P PS 1.4-2.52kW; 90-264V AC in
PEM 3 Rev 06 740-029970 QCS1049U01H PS 1.4-2.52kW; 90-264V AC in
Routing Engine 0 REV 15 740-013063 9012011286 RE-S-2000
Routing Engine 1 REV 15 740-013063 9012011291 RE-S-2000
CB 0 REV 09 710-021523 YY8430 MX SCB
CB 1 REV 09 710-021523 YY8274 MX SCB
FPC 0 REV 16 750-031089 YM8052 MPC Type 2 3D
CPU REV 06 711-030884 YM8454 MPC PMB 2G
MIC 0 REV 22 750-028392 YN1447 3D 20x 1GE(LAN) SFP <<<<<<<<<
PIC 0 BUILTIN BUILTIN 10x 1GE(LAN) SFP
Xcvr 1 REV 01 740-011782 PBB1D40 SFP-SX
PIC 1 BUILTIN BUILTIN 10x 1GE(LAN) SFP
Xcvr 0 REV 01 740-013111 7271648 SFP-T
MIC 1 REV 24 750-028387 YJ3861 3D 4x 10GE XFP
PIC 2 BUILTIN BUILTIN 2x 10GE XFP
Xcvr 0 REV 01 740-014279 853019B00322 XFP-10G-LR
PIC 3 BUILTIN BUILTIN 2x 10GE XFP
Xcvr 0 REV 03 740-014289 CA37BQ0B8 XFP-10G-SR
FPC 1 REV 29 750-031090 YW0004 MPC Type 2 3D EQ
CPU REV 06 711-030884 YW3531 MPC PMB 2G
QXM 0 REV 05 711-028408 YV9307 MPC QXM
QXM 1 REV 05 711-028408 YV9328 MPC QXM
FPC 2 REV 05 750-024064 XD6394 MS-DPC
CPU REV 07 710-013713 XC3852 DPC PMB
PIC 0 BUILTIN BUILTIN MS-DPC PIC
PIC 1 BUILTIN BUILTIN MS-DPC PIC
FPC 4 REV 35 750-016670 YR9645 DPCE 40x 1GE R EQ
CPU REV 08 710-013713 YR0396 DPC PMB
PIC 0 BUILTIN BUILTIN 10x 1GE(LAN) EQ
Xcvr 0 REV 01 740-013111 8245861 SFP-T
Xcvr 1 REV 02 740-013111 A492672 SFP-T
Xcvr 5 REV 02 740-011613 PHE25LY SFP-SX
Xcvr 6 REV 01 740-011613 PCE04LG SFP-SX
PIC 1 BUILTIN BUILTIN 10x 1GE(LAN) EQ
Xcvr 0 REV 01 740-011613 PBN0CEA SFP-SX
Xcvr 9 REV 01 740-011782 PBB1J0E SFP-SX
PIC 2 BUILTIN BUILTIN 10x 1GE(LAN) EQ
Xcvr 0 REV 01 740-011613 PBN09GR SFP-SX
Xcvr 3 REV 01 740-007326 P5S0P6E SFP-SX
Xcvr 5 REV 02 740-011613 PJH4SLD SFP-SX
Xcvr 8 REV 01 740-014132 6492476 SFP-T
PIC 3 BUILTIN BUILTIN 10x 1GE(LAN) EQ
Xcvr 0 REV 01 740-013111 7447674 SFP-T
Xcvr 4 REV 02 740-013111 B147560 SFP-T
Xcvr 9 REV 01 740-011782 PBD25BG SFP-SX
FPC 5 REV 23 750-031092 ZA0366 MPC Type 1 3D Q
CPU REV 06 711-030884 YY6447 MPC PMB 2G
MIC 1 REV 20 750-028380 YZ4928 3D 2x 10GE XFP
PIC 2 BUILTIN BUILTIN 1x 10GE XFP <<<<<<<<<<<<<<
Xcvr 0 NON-JNPR CA06BK016 XFP-10G-SR
PIC 3 BUILTIN BUILTIN 1x 10GE XFP
Xcvr 0 REV 03 740-014289 CA46BQ08B XFP-10G-SR
QXM 0 REV 05 711-028408 YY4352 MPC QXM
Fan Tray Enhanced Left Fan Tray

Cause:
MIC-3D-20GE-SFP does not support the hardware counter for VLAN frames.
It is expected that the counter "VLANTaggedFrames" is always 0.

Solution:

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