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Hi mates,

Recently while playing with vQFX 15 on EVE, I've noticed one interesting thing - it appears that interfaces on vQFX are not forwarding any traffic. I've tried different scenarios - created a LAG with/without LACP, configured interface in access mode, and when checking, I can see that switch is sending certain packets(LACP, BPDU) but nothing is received. Even when I disable LACP on LAG and it comes up, it does not receive any traffic. Any ideas why this could happen?

{master:0}
root@QFX-1> show chassis fpc
Temp CPU Utilization (%) CPU Utilization (%) Memory Utilization (%)
Slot State (C) Total Interrupt 1min 5min 15min DRAM (MB) Heap Buffer
0 Online Testing 42 7 0 0 0 1920 0 35
1 Empty
2 Empty
3 Empty
4 Empty
5 Empty
6 Empty
7 Empty
8 Empty
9 Empty

{master:0}
root@QFX-1> show chassis hardware
Hardware inventory:
Item Version Part number Serial number Description
Chassis 80061306163 QFX3500

{master:0}
root@QFX-1> show version
fpc0:
--------------------------------------------------------------------------
Hostname: QFX-1
Model: vqfx-10000
Junos: 15.1X53-D63.9
JUNOS Base OS boot [15.1X53-D63.9]
JUNOS Base OS Software Suite [15.1X53-D63.9]
JUNOS Online Documentation [15.1X53-D63.9]
JUNOS Crypto Software Suite [15.1X53-D63.9]
JUNOS Packet Forwarding Engine Support (qfx-10-f) [15.1X53-D63.9]
JUNOS Kernel Software Suite [15.1X53-D63.9]
JUNOS Web Management [15.1X53-D63.9]
JUNOS Enterprise Software Suite [15.1X53-D63.9]
JUNOS SDN Software Suite [15.1X53-D63.9]
JUNOS Routing Software Suite [15.1X53-D63.9]
JUNOS py-base-i386 [15.1X53-D63.9]

{master:0}[edit]
root@QFX-1# run show interfaces terse
Interface Admin Link Proto Local Remote
gr-0/0/0 up up
pfe-0/0/0 up up
pfe-0/0/0.16383 up up inet
inet6
pfh-0/0/0 up up
pfh-0/0/0.16383 up up inet
pfh-0/0/0.16384 up up inet
xe-0/0/0 up up
xe-0/0/0.0 up up aenet --> ae12.0
xe-0/0/1 up up
xe-0/0/1.0 up up aenet --> ae12.0
xe-0/0/2 up up
xe-0/0/2.0 up up aenet --> ae14.0
xe-0/0/3 up up
xe-0/0/3.0 up up aenet --> ae14.0
xe-0/0/4 up up
xe-0/0/4.0 up up inet
xe-0/0/5 up up
xe-0/0/5.0 up up inet
xe-0/0/6 up up
xe-0/0/6.0 up up inet
xe-0/0/7 up up
xe-0/0/7.0 up up inet
xe-0/0/8 up up
xe-0/0/8.0 up up inet
xe-0/0/9 up up
xe-0/0/9.0 up up inet
xe-0/0/10 up up
xe-0/0/10.0 up up inet
xe-0/0/11 up up
xe-0/0/11.0 up up inet
ae12 up down
ae12.0 up down eth-switch
ae14 up up
ae14.0 up up eth-switch
bme0 up up
bme0.0 up up inet 128.0.0.1/2
128.0.0.4/2
128.0.0.16/2
128.0.0.63/2
cbp0 up up
dsc up up
em0 up up
em0.0 up up inet
em1 up up
em1.0 up up inet 169.254.0.2/24
esi up up
gre up up
ipip up up
irb up up
irb.100 up up inet 192.168.100.1/24
irb.101 up up inet 192.168.101.1/24
lo0 up up
lo0.0 up up inet
inet6 fe80::200:f:fc00:0
lo0.16385 up up inet
lsi up up
mtun up up
pimd up up
pime up up
pip0 up up
tap up up
vme up down
vtep up up

{master:0}[edit]
root@QFX-1# run show spanning-tree statistics interface


Interface BPDUs BPDUs Next BPDU TCs Proposal Agreement
Sent Received Transmission Tx/Rx Tx/Rx Tx/Rx
ae12 0 0 0 0/0 0/0 0/0
ae14 60 0 1 0/0 0/0 0/0

{master:0}[edit]
root@QFX-1# run show spanning-tree interface

Spanning tree interface parameters for instance 0

Interface Port ID Designated Designated Port State Role
port ID bridge ID Cost
ae12 128:15 128:15 32768.020586718f02 1000 BLK DIS
ae14 128:17 128:17 32768.020586718f02 1000 FWD DESG

Anyone has faced this problem? I've tried both 15.x and 18.x, same issue.

Folks,

Any help here?

I tried different versions, even officially downloaded version from Juniper, but still no luck.

FPCs on switches are operational, but no traffic is being received on interfaces.

It is specific and issue of vQFX image.
Other vendor images not such problems.
Yesterday I tested myself that vGFX 18.X and yes counters inbound stay calm.
But lab was done and traffic runing smooth over them..

Uldis (UD) wrote: ↑

Thu Mar 26, 2020 10:13 am

It is specific and issue of vQFX image.
Other vendor images not such problems.
Yesterday I tested myself that vGFX 18.X and yes counters inbound stay calm.
But lab was done and traffic runing smooth over them..

THIS IS INCREDIBLE - it appears that I was always connecting xe ports on PFEs, not REs. Now noticed that in your screenshot and vQFX manual here - https://www.eve-ng.net/index.php/docume ... iper-vqfx/

I've tested on 15.x, now all features (L2/L3) work perfectly.

Thanks for assistance though - this is good example of how important it is to pay attention to details