Hello,
I configured port-mirroring by LuCI to mirror one LAN to eth1 on CPU. However it doesn’t work. No data captured by tcpdump. Is this known issue ?
BTW, I downloaded QCA9531 datasheet, I want to check if port-mirror related registers set to correct value.
As there’s no /dev/mem, busybox devmem doesn’t work. So I wonder is there a tool on your router to check register values from userspace ?
Really appreciate if this can be resolved.
It seems mirror port doesn’t work correctly in Luci. You have to ssh to the router, and set it on command line.
root@GL-AR750:/# swconfig dev switch0 set mirror_monitor_port 2
root@GL-AR750:/# swconfig dev switch0 port 1 set enable_mirror_rx 1
root@GL-AR750:/# swconfig dev switch0 port 1 set enable_mirror_tx 1
swconfig dev switch0 show.
root@GL-AR750:~# swconfig dev switch0 show
Global attributes:
enable_vlan: 1
mirror_monitor_port: 2
Port 0:
enable_mirror_rx: 0
enable_mirror_tx: 0
pvid: 1
link: port:0 link:up speed:1000baseT full-duplex txflow rxflow
Port 1:
enable_mirror_rx: 1
enable_mirror_tx: 1
pvid: 1
link: port:1 link:up speed:100baseT full-duplex auto
Port 2:
enable_mirror_rx: 0
enable_mirror_tx: 0
pvid: 1
link: port:2 link:up speed:100baseT full-duplex auto
Port 3:
enable_mirror_rx: 0
enable_mirror_tx: 0
pvid: 0
link: port:3 link:down
Port 4:
enable_mirror_rx: 0
enable_mirror_tx: 0
pvid: 0
link: port:4 link:down
VLAN 0:
vid: 0
ports: 3 4
VLAN 1:
vid: 1
ports: 0t 1 2
The device’s middle port is port 1, another LAN port is port 2.
mirror_monitor_port option is equal with Luci’s mirror_src_port option.
Note that the configuration will lose if network restart.
Thank you very much !
It’s working on my router.
I have AR750S, I got:
root@GL-AR750S:~# swconfig dev switch0 show
Global attributes:
enable_vlan: 1
ar8xxx_mib_poll_interval: 0
ar8xxx_mib_type: 0
enable_mirror_rx: 0
enable_mirror_tx: 0
mirror_monitor_port: 2
mirror_source_port: 0
arl_age_time: 300
arl_table: address resolution table
Port 0: MAC 94:83:c4:1d:b1:94
Port 1: MAC 00:07:32:9e:5a:e7
Port 2: MAC 00:26:b9:a5:d3:21
Port 3: MAC 00:1c:c2:52:4d:79
igmp_snooping: 0
igmp_v3: 0
Port 0:
mib: ???
enable_eee: ???
igmp_snooping: 0
vlan_prio: 0
pvid: 0
link: port:0 link:up speed:1000baseT full-duplex txflow rxflow
Port 1:
mib: ???
enable_eee: 0
igmp_snooping: 0
vlan_prio: 0
pvid: 1
link: port:1 link:up speed:1000baseT full-duplex txflow rxflow auto
Port 2:
mib: ???
enable_eee: 0
igmp_snooping: 0
vlan_prio: 0
pvid: 1
link: port:2 link:up speed:1000baseT full-duplex txflow rxflow auto
Port 3:
mib: ???
enable_eee: 0
igmp_snooping: 0
vlan_prio: 0
pvid: 1
link: port:3 link:up speed:1000baseT full-duplex txflow rxflow auto
Port 4:
mib: ???
enable_eee: 0
igmp_snooping: 0
vlan_prio: 0
pvid: 0
link: port:4 link:down
Port 5:
mib: ???
enable_eee: 0
igmp_snooping: 0
vlan_prio: 0
pvid: 0
link: port:5 link:down
Port 6:
mib: ???
enable_eee: ???
igmp_snooping: 0
vlan_prio: 0
pvid: 0
link: port:6 link:up speed:10baseT half-duplex
VLAN 1:
vid: 1
ports: 0t 1 2 3
VLAN 2:
vid: 2
ports: 0t
The “swconfig dev switch0 set mirror_monitor_port 2” is okay, but I got
root@GL-AR750S:~# swconfig dev switch0 port 3 set enable_mirror_rx 1
Unknown attribute "enable_mirror_rx"
Is there a way to make port mirroring work on AR750S?
I found the answer by myself, the command sequence is:
root@GL-AR750S:~# swconfig dev switch0 set mirror_monitor_port 2
root@GL-AR750S:~# swconfig dev switch0 set mirror_source_port 3
root@GL-AR750S:~# swconfig dev switch0 set enable_mirror_rx 1
root@GL-AR750S:~# swconfig dev switch0 set enable_mirror_tx 1
Here is the swconfig show, I set mirror_monitor_port 2 to use port 2 as monitor port and mirror_source_port 3 to set port 3 to be mirrored from.
root@GL-AR750S:~# swconfig dev switch0 show
Global attributes:
enable_vlan: 1
ar8xxx_mib_poll_interval: 0
ar8xxx_mib_type: 0
enable_mirror_rx: 1
enable_mirror_tx: 1
mirror_monitor_port: 2
mirror_source_port: 3
arl_age_time: 300
arl_table: address resolution table
Port 0: MAC 94:83:c4:1d:b1:94
Port 1: MAC 00:07:32:9e:5a:e7
Port 2: MAC 00:26:b9:a5:d3:21
Port 3: MAC 00:1c:c2:52:4d:79
igmp_snooping: 0
igmp_v3: 0
Port 0:
mib: ???
enable_eee: ???
igmp_snooping: 0
vlan_prio: 0
pvid: 0
link: port:0 link:up speed:1000baseT full-duplex txflow rxflow
Port 1:
mib: ???
enable_eee: 0
igmp_snooping: 0
vlan_prio: 0
pvid: 1
link: port:1 link:up speed:1000baseT full-duplex txflow rxflow auto
Port 2:
mib: ???
enable_eee: 0
igmp_snooping: 0
vlan_prio: 0
pvid: 1
link: port:2 link:up speed:100baseT full-duplex txflow rxflow auto
Port 3:
mib: ???
enable_eee: 0
igmp_snooping: 0
vlan_prio: 0
pvid: 1
link: port:3 link:up speed:1000baseT full-duplex txflow rxflow auto
Port 4:
mib: ???
enable_eee: 0
igmp_snooping: 0
vlan_prio: 0
pvid: 0
link: port:4 link:down
Port 5:
mib: ???
enable_eee: 0
igmp_snooping: 0
vlan_prio: 0
pvid: 0
link: port:5 link:down
Port 6:
mib: ???
enable_eee: ???
igmp_snooping: 0
vlan_prio: 0
pvid: 0
link: port:6 link:up speed:10baseT half-duplex
VLAN 1:
vid: 1
ports: 0t 1 2 3
VLAN 2:
vid: 2
ports: 0t