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VLAN statistics no Tx on some of VLANs

VLAN statistics no Tx on some of VLANs

Alexandr_P
Valued Contributor
Hello!

X590, EXOS 30.7.2.1 patch1-20
Configured VLAN statistics with 
configure ports 12 monitor vlan XXX
configure ports 23 monitor vlan YYY
But show vlan statistics on VLAN XXX don't showing Tx traffic:
a2L9D6kFR3anEELb3200_123.jpeg
ACL slices available:
# show access-list usage acl-slice port 12
Ports 1-24, 29, 33
Stage: INGRESS
Slices:          Used: 5  Available: 7
Virtual Slice  * (physical slice  0) Rules:   Used:      0  Available:   1024
Virtual Slice  * (physical slice  1) Rules:   Used:      0  Available:   1024
Virtual Slice  * (physical slice  2) Rules:   Used:      0  Available:   1024
Virtual Slice  * (physical slice  3) Rules:   Used:      0  Available:   1024
Virtual Slice  * (physical slice  6) Rules:   Used:      0  Available:    512
Virtual Slice  * (physical slice  7) Rules:   Used:      0  Available:    512
Virtual Slice  * (physical slice  😎 Rules:   Used:      0  Available:    512
Virtual Slice  7 (physical slice  4) Rules:   Used:      4  Available:    508 VLAN statistics
Virtual Slice  8 (physical slice 10) Rules:   Used:      6  Available:    506 system
Virtual Slice  9 (physical slice 11) Rules:   Used:      2  Available:    510 system
Virtual Slice 10 (physical slice  5) Rules:   Used:     10  Available:    502 user/other
Virtual Slice 11 (physical slice  9) Rules:   Used:     31  Available:    481 user/other
Stage: EGRESS
Slices:          Used: 2  Available: 2
Virtual Slice  * (physical slice  0) Rules:   Used:      0  Available:    256
Virtual Slice  * (physical slice  1) Rules:   Used:      0  Available:    256
Virtual Slice  2 (physical slice  2) Rules:   Used:      4  Available:    252 VLAN statistics
Virtual Slice  3 (physical slice  3) Rules:   Used:     17  Available:    239 user/other
Stage: LOOKUP
Slices:          Used: 0  Available: 4
Virtual Slice  * (physical slice  0) Rules:   Used:      0  Available:    512
Virtual Slice  * (physical slice  1) Rules:   Used:      0  Available:    512
Virtual Slice  * (physical slice  2) Rules:   Used:      0  Available:    512
Virtual Slice  * (physical slice  3) Rules:   Used:      0  Available:    512
Stage: EXTERNAL

When try to # configure ports 12 monitor vlan XXX tx-only - no results = no Tx traffic in VLAN statistics

After checks, it was found that TX traffic is not shown on those vlan-s that have an IP interface and have only one port. 
In addition, if it has an IP interface in the vlan, but this vlan is present on multiple ports and devices on these ports exchange traffic with each other, TX counts.
It looks like the TX counter do not get the traffic generated by the switch itself.

Could you please help - at which way to think?​

Thank you!
1 ACCEPTED SOLUTION

Alexandr_P
Valued Contributor
Hello!

It's expected behavior.
It's mentioned in User Guide "Packets originating from the switch's CPU or forwarded by the CPU may not be reflected in transmit statistics" and checked in lab.

View solution in original post

1 REPLY 1

Alexandr_P
Valued Contributor
Hello!

It's expected behavior.
It's mentioned in User Guide "Packets originating from the switch's CPU or forwarded by the CPU may not be reflected in transmit statistics" and checked in lab.
GTM-P2G8KFN