lshw HWPath priority — how to determine
I have a project here at work where I'm attempting to definitively map ethernet MAC addresses to physical ports (IE card 1 port 0 is eth0 (mac xx:xx:xx:xx:xx:xx) and a non-technical operator can look at that port descriptor and know exactly where a cable is plugged in on a box) for network devices in servers (arbitrary server vendors and models) using Linux, currently CentOS 6.6 without being required to crack the physical box.
The answer to this question probably lies in how Linux enumerates hardware, but I've neither found anything definitive asking the Googles nor been able to find anything definitive in man pages and the like. Finally, I don't believe in my skills at reading C to get the answer I need in the time I need it.
Using lshw:
root@E2APF77 (~)# lshw -c network -businfo
Bus info Device Class Description
====================================================
pci@0000:06:00.0 eth0 network Ethernet Controller 10-Gigabit X540-AT2
pci@0000:06:00.1 eth1 network Ethernet Controller 10-Gigabit X540-AT2
pci@0000:16:00.0 eth2 network NetXtreme BCM5719 Gigabit Ethernet PCIe
pci@0000:16:00.1 eth3 network NetXtreme BCM5719 Gigabit Ethernet PCIe
pci@0000:16:00.2 eth4 network NetXtreme BCM5719 Gigabit Ethernet PCIe
pci@0000:16:00.3 eth5 network NetXtreme BCM5719 Gigabit Ethernet PCIe
usb0 network Ethernet interface
which is interesting, but I prefer to see the hw path, so I run:
root@E2APF77 (~)# lshw -c network -short -businfo
H/W path Device Class Description
=======================================================
/0/100/2/0 eth0 network Ethernet Controller 10-Gigabit X540-AT2
/0/100/2/0.1 eth1 network Ethernet Controller 10-Gigabit X540-AT2
/0/100/1c.4/0 eth2 network NetXtreme BCM5719 Gigabit Ethernet PCIe
/0/100/1c.4/0.1 eth3 network NetXtreme BCM5719 Gigabit Ethernet PCIe
/0/100/1c.4/0.2 eth4 network NetXtreme BCM5719 Gigabit Ethernet PCIe
/0/100/1c.4/0.3 eth5 network NetXtreme BCM5719 Gigabit Ethernet PCIe
/1 usb0 network Ethernet interface
Now this is interesting to me, but I'm not sure if I'm seeing the context I need. So, running the following gives me better context:
root@E2APF77 (~)# lshw -short -businfo -c bridge
H/W path Device Class Description
=======================================================
/0/100 bridge Xeon E5 v3/Core i7 DMI2
/0/100/1 bridge Xeon E5 v3/Core i7 PCI Express Root Port 1
/0/100/2 bridge Xeon E5 v3/Core i7 PCI Express Root Port 2
/0/100/3 bridge Xeon E5 v3/Core i7 PCI Express Root Port 3
/0/100/1c bridge C610/X99 series chipset PCI Express Root Port #1
/0/100/1c.3 bridge C610/X99 series chipset PCI Express Root Port #4
/0/100/1c.3/0 bridge Renesas Technology Corp.
/0/100/1c.3/0/0 bridge Renesas Technology Corp.
/0/100/1c.3/0/0/0 bridge Renesas Technology Corp.
/0/100/1c.3/0/1 bridge Renesas Technology Corp.
/0/100/1c.4 bridge C610/X99 series chipset PCI Express Root Port #5
/0/100/1f bridge C610/X99 series chipset LPC Controller
OK. I like this. Now I see that the following:
/0/100/2 bridge Xeon E5 v3/Core i7 PCI Express Root Port 2
/0/100/2/0 eth0 network Ethernet Controller 10-Gigabit X540-AT2
/0/100/2/0.1 eth1 network Ethernet Controller 10-Gigabit X540-AT2
/0/100/1c.4 bridge C610/X99 series chipset PCI Express Root Port #5
/0/100/1c.4/0 eth2 network NetXtreme BCM5719 Gigabit Ethernet PCIe
/0/100/1c.4/0.1 eth3 network NetXtreme BCM5719 Gigabit Ethernet PCIe
/0/100/1c.4/0.2 eth4 network NetXtreme BCM5719 Gigabit Ethernet PCIe
/0/100/1c.4/0.3 eth5 network NetXtreme BCM5719 Gigabit Ethernet PCIe
...where the first card is on port 2 of the Xeon E5 bridge and the second card is on port 1c.4 of the C610/X99 bridge (if I'm even using the correct naming of the nomenclature. Please forgive me if I'm not). I have no easy way of validating the locations of where the hardware is plugged in and I currently have no knowledge of the specifics of how these machines are built without reading documentation.
So, can one assert or assume that the way Linux is enumerating the hardware in the box is in some priority that we can use to determine the physical ports to an arbitrary number of arbitrary brand of network cards in arbitrary boxen? I'm assuming I'm barking up the right tree, but something isn't passing the smell test for me on this.
linux centos hardware ethernet
edited 1 hour ago
Rui F Ribeiro
41.5k1483140
asked Dec 14 '15 at 23:19
JimJim
3641411
add a comment |
I have a project here at work where I'm attempting to definitively map ethernet MAC addresses to physical ports (IE card 1 port 0 is eth0 (mac xx:xx:xx:xx:xx:xx) and a non-technical operator can look at that port descriptor and know exactly where a cable is plugged in on a box) for network devices in servers (arbitrary server vendors and models) using Linux, currently CentOS 6.6 without being required to crack the physical box.
The answer to this question probably lies in how Linux enumerates hardware, but I've neither found anything definitive asking the Googles nor been able to find anything definitive in man pages and the like. Finally, I don't believe in my skills at reading C to get the answer I need in the time I need it.
Using lshw:
root@E2APF77 (~)# lshw -c network -businfo
Bus info Device Class Description
====================================================
pci@0000:06:00.0 eth0 network Ethernet Controller 10-Gigabit X540-AT2
pci@0000:06:00.1 eth1 network Ethernet Controller 10-Gigabit X540-AT2
pci@0000:16:00.0 eth2 network NetXtreme BCM5719 Gigabit Ethernet PCIe
pci@0000:16:00.1 eth3 network NetXtreme BCM5719 Gigabit Ethernet PCIe
pci@0000:16:00.2 eth4 network NetXtreme BCM5719 Gigabit Ethernet PCIe
pci@0000:16:00.3 eth5 network NetXtreme BCM5719 Gigabit Ethernet PCIe
usb0 network Ethernet interface
which is interesting, but I prefer to see the hw path, so I run:
root@E2APF77 (~)# lshw -c network -short -businfo
H/W path Device Class Description
=======================================================
/0/100/2/0 eth0 network Ethernet Controller 10-Gigabit X540-AT2
/0/100/2/0.1 eth1 network Ethernet Controller 10-Gigabit X540-AT2
/0/100/1c.4/0 eth2 network NetXtreme BCM5719 Gigabit Ethernet PCIe
/0/100/1c.4/0.1 eth3 network NetXtreme BCM5719 Gigabit Ethernet PCIe
/0/100/1c.4/0.2 eth4 network NetXtreme BCM5719 Gigabit Ethernet PCIe
/0/100/1c.4/0.3 eth5 network NetXtreme BCM5719 Gigabit Ethernet PCIe
/1 usb0 network Ethernet interface
Now this is interesting to me, but I'm not sure if I'm seeing the context I need. So, running the following gives me better context:
root@E2APF77 (~)# lshw -short -businfo -c bridge
H/W path Device Class Description
=======================================================
/0/100 bridge Xeon E5 v3/Core i7 DMI2
/0/100/1 bridge Xeon E5 v3/Core i7 PCI Express Root Port 1
/0/100/2 bridge Xeon E5 v3/Core i7 PCI Express Root Port 2
/0/100/3 bridge Xeon E5 v3/Core i7 PCI Express Root Port 3
/0/100/1c bridge C610/X99 series chipset PCI Express Root Port #1
/0/100/1c.3 bridge C610/X99 series chipset PCI Express Root Port #4
/0/100/1c.3/0 bridge Renesas Technology Corp.
/0/100/1c.3/0/0 bridge Renesas Technology Corp.
/0/100/1c.3/0/0/0 bridge Renesas Technology Corp.
/0/100/1c.3/0/1 bridge Renesas Technology Corp.
/0/100/1c.4 bridge C610/X99 series chipset PCI Express Root Port #5
/0/100/1f bridge C610/X99 series chipset LPC Controller
OK. I like this. Now I see that the following:
/0/100/2 bridge Xeon E5 v3/Core i7 PCI Express Root Port 2
/0/100/2/0 eth0 network Ethernet Controller 10-Gigabit X540-AT2
/0/100/2/0.1 eth1 network Ethernet Controller 10-Gigabit X540-AT2
/0/100/1c.4 bridge C610/X99 series chipset PCI Express Root Port #5
/0/100/1c.4/0 eth2 network NetXtreme BCM5719 Gigabit Ethernet PCIe
/0/100/1c.4/0.1 eth3 network NetXtreme BCM5719 Gigabit Ethernet PCIe
/0/100/1c.4/0.2 eth4 network NetXtreme BCM5719 Gigabit Ethernet PCIe
/0/100/1c.4/0.3 eth5 network NetXtreme BCM5719 Gigabit Ethernet PCIe
...where the first card is on port 2 of the Xeon E5 bridge and the second card is on port 1c.4 of the C610/X99 bridge (if I'm even using the correct naming of the nomenclature. Please forgive me if I'm not). I have no easy way of validating the locations of where the hardware is plugged in and I currently have no knowledge of the specifics of how these machines are built without reading documentation.
So, can one assert or assume that the way Linux is enumerating the hardware in the box is in some priority that we can use to determine the physical ports to an arbitrary number of arbitrary brand of network cards in arbitrary boxen? I'm assuming I'm barking up the right tree, but something isn't passing the smell test for me on this.
linux centos hardware ethernet
edited 1 hour ago
Rui F Ribeiro
41.5k1483140
asked Dec 14 '15 at 23:19
JimJim
3641411
add a comment |
I have a project here at work where I'm attempting to definitively map ethernet MAC addresses to physical ports (IE card 1 port 0 is eth0 (mac xx:xx:xx:xx:xx:xx) and a non-technical operator can look at that port descriptor and know exactly where a cable is plugged in on a box) for network devices in servers (arbitrary server vendors and models) using Linux, currently CentOS 6.6 without being required to crack the physical box.
The answer to this question probably lies in how Linux enumerates hardware, but I've neither found anything definitive asking the Googles nor been able to find anything definitive in man pages and the like. Finally, I don't believe in my skills at reading C to get the answer I need in the time I need it.
Using lshw:
root@E2APF77 (~)# lshw -c network -businfo
Bus info Device Class Description
====================================================
pci@0000:06:00.0 eth0 network Ethernet Controller 10-Gigabit X540-AT2
pci@0000:06:00.1 eth1 network Ethernet Controller 10-Gigabit X540-AT2
pci@0000:16:00.0 eth2 network NetXtreme BCM5719 Gigabit Ethernet PCIe
pci@0000:16:00.1 eth3 network NetXtreme BCM5719 Gigabit Ethernet PCIe
pci@0000:16:00.2 eth4 network NetXtreme BCM5719 Gigabit Ethernet PCIe
pci@0000:16:00.3 eth5 network NetXtreme BCM5719 Gigabit Ethernet PCIe
usb0 network Ethernet interface
which is interesting, but I prefer to see the hw path, so I run:
root@E2APF77 (~)# lshw -c network -short -businfo
H/W path Device Class Description
=======================================================
/0/100/2/0 eth0 network Ethernet Controller 10-Gigabit X540-AT2
/0/100/2/0.1 eth1 network Ethernet Controller 10-Gigabit X540-AT2
/0/100/1c.4/0 eth2 network NetXtreme BCM5719 Gigabit Ethernet PCIe
/0/100/1c.4/0.1 eth3 network NetXtreme BCM5719 Gigabit Ethernet PCIe
/0/100/1c.4/0.2 eth4 network NetXtreme BCM5719 Gigabit Ethernet PCIe
/0/100/1c.4/0.3 eth5 network NetXtreme BCM5719 Gigabit Ethernet PCIe
/1 usb0 network Ethernet interface
Now this is interesting to me, but I'm not sure if I'm seeing the context I need. So, running the following gives me better context:
root@E2APF77 (~)# lshw -short -businfo -c bridge
H/W path Device Class Description
=======================================================
/0/100 bridge Xeon E5 v3/Core i7 DMI2
/0/100/1 bridge Xeon E5 v3/Core i7 PCI Express Root Port 1
/0/100/2 bridge Xeon E5 v3/Core i7 PCI Express Root Port 2
/0/100/3 bridge Xeon E5 v3/Core i7 PCI Express Root Port 3
/0/100/1c bridge C610/X99 series chipset PCI Express Root Port #1
/0/100/1c.3 bridge C610/X99 series chipset PCI Express Root Port #4
/0/100/1c.3/0 bridge Renesas Technology Corp.
/0/100/1c.3/0/0 bridge Renesas Technology Corp.
/0/100/1c.3/0/0/0 bridge Renesas Technology Corp.
/0/100/1c.3/0/1 bridge Renesas Technology Corp.
/0/100/1c.4 bridge C610/X99 series chipset PCI Express Root Port #5
/0/100/1f bridge C610/X99 series chipset LPC Controller
OK. I like this. Now I see that the following:
/0/100/2 bridge Xeon E5 v3/Core i7 PCI Express Root Port 2
/0/100/2/0 eth0 network Ethernet Controller 10-Gigabit X540-AT2
/0/100/2/0.1 eth1 network Ethernet Controller 10-Gigabit X540-AT2
/0/100/1c.4 bridge C610/X99 series chipset PCI Express Root Port #5
/0/100/1c.4/0 eth2 network NetXtreme BCM5719 Gigabit Ethernet PCIe
/0/100/1c.4/0.1 eth3 network NetXtreme BCM5719 Gigabit Ethernet PCIe
/0/100/1c.4/0.2 eth4 network NetXtreme BCM5719 Gigabit Ethernet PCIe
/0/100/1c.4/0.3 eth5 network NetXtreme BCM5719 Gigabit Ethernet PCIe
...where the first card is on port 2 of the Xeon E5 bridge and the second card is on port 1c.4 of the C610/X99 bridge (if I'm even using the correct naming of the nomenclature. Please forgive me if I'm not). I have no easy way of validating the locations of where the hardware is plugged in and I currently have no knowledge of the specifics of how these machines are built without reading documentation.
So, can one assert or assume that the way Linux is enumerating the hardware in the box is in some priority that we can use to determine the physical ports to an arbitrary number of arbitrary brand of network cards in arbitrary boxen? I'm assuming I'm barking up the right tree, but something isn't passing the smell test for me on this.
linux centos hardware ethernet
edited 1 hour ago
Rui F Ribeiro
41.5k1483140
asked Dec 14 '15 at 23:19
JimJim
3641411
I have a project here at work where I'm attempting to definitively map ethernet MAC addresses to physical ports (IE card 1 port 0 is eth0 (mac xx:xx:xx:xx:xx:xx) and a non-technical operator can look at that port descriptor and know exactly where a cable is plugged in on a box) for network devices in servers (arbitrary server vendors and models) using Linux, currently CentOS 6.6 without being required to crack the physical box.
The answer to this question probably lies in how Linux enumerates hardware, but I've neither found anything definitive asking the Googles nor been able to find anything definitive in man pages and the like. Finally, I don't believe in my skills at reading C to get the answer I need in the time I need it.
Using lshw:
root@E2APF77 (~)# lshw -c network -businfo
Bus info Device Class Description
====================================================
pci@0000:06:00.0 eth0 network Ethernet Controller 10-Gigabit X540-AT2
pci@0000:06:00.1 eth1 network Ethernet Controller 10-Gigabit X540-AT2
pci@0000:16:00.0 eth2 network NetXtreme BCM5719 Gigabit Ethernet PCIe
pci@0000:16:00.1 eth3 network NetXtreme BCM5719 Gigabit Ethernet PCIe
pci@0000:16:00.2 eth4 network NetXtreme BCM5719 Gigabit Ethernet PCIe
pci@0000:16:00.3 eth5 network NetXtreme BCM5719 Gigabit Ethernet PCIe
usb0 network Ethernet interface
which is interesting, but I prefer to see the hw path, so I run:
root@E2APF77 (~)# lshw -c network -short -businfo
H/W path Device Class Description
=======================================================
/0/100/2/0 eth0 network Ethernet Controller 10-Gigabit X540-AT2
/0/100/2/0.1 eth1 network Ethernet Controller 10-Gigabit X540-AT2
/0/100/1c.4/0 eth2 network NetXtreme BCM5719 Gigabit Ethernet PCIe
/0/100/1c.4/0.1 eth3 network NetXtreme BCM5719 Gigabit Ethernet PCIe
/0/100/1c.4/0.2 eth4 network NetXtreme BCM5719 Gigabit Ethernet PCIe
/0/100/1c.4/0.3 eth5 network NetXtreme BCM5719 Gigabit Ethernet PCIe
/1 usb0 network Ethernet interface
Now this is interesting to me, but I'm not sure if I'm seeing the context I need. So, running the following gives me better context:
root@E2APF77 (~)# lshw -short -businfo -c bridge
H/W path Device Class Description
=======================================================
/0/100 bridge Xeon E5 v3/Core i7 DMI2
/0/100/1 bridge Xeon E5 v3/Core i7 PCI Express Root Port 1
/0/100/2 bridge Xeon E5 v3/Core i7 PCI Express Root Port 2
/0/100/3 bridge Xeon E5 v3/Core i7 PCI Express Root Port 3
/0/100/1c bridge C610/X99 series chipset PCI Express Root Port #1
/0/100/1c.3 bridge C610/X99 series chipset PCI Express Root Port #4
/0/100/1c.3/0 bridge Renesas Technology Corp.
/0/100/1c.3/0/0 bridge Renesas Technology Corp.
/0/100/1c.3/0/0/0 bridge Renesas Technology Corp.
/0/100/1c.3/0/1 bridge Renesas Technology Corp.
/0/100/1c.4 bridge C610/X99 series chipset PCI Express Root Port #5
/0/100/1f bridge C610/X99 series chipset LPC Controller
OK. I like this. Now I see that the following:
/0/100/2 bridge Xeon E5 v3/Core i7 PCI Express Root Port 2
/0/100/2/0 eth0 network Ethernet Controller 10-Gigabit X540-AT2
/0/100/2/0.1 eth1 network Ethernet Controller 10-Gigabit X540-AT2
/0/100/1c.4 bridge C610/X99 series chipset PCI Express Root Port #5
/0/100/1c.4/0 eth2 network NetXtreme BCM5719 Gigabit Ethernet PCIe
/0/100/1c.4/0.1 eth3 network NetXtreme BCM5719 Gigabit Ethernet PCIe
/0/100/1c.4/0.2 eth4 network NetXtreme BCM5719 Gigabit Ethernet PCIe
/0/100/1c.4/0.3 eth5 network NetXtreme BCM5719 Gigabit Ethernet PCIe
...where the first card is on port 2 of the Xeon E5 bridge and the second card is on port 1c.4 of the C610/X99 bridge (if I'm even using the correct naming of the nomenclature. Please forgive me if I'm not). I have no easy way of validating the locations of where the hardware is plugged in and I currently have no knowledge of the specifics of how these machines are built without reading documentation.
So, can one assert or assume that the way Linux is enumerating the hardware in the box is in some priority that we can use to determine the physical ports to an arbitrary number of arbitrary brand of network cards in arbitrary boxen? I'm assuming I'm barking up the right tree, but something isn't passing the smell test for me on this.
linux centos hardware ethernet
linux centos hardware ethernet
edited 1 hour ago
Rui F Ribeiro
41.5k1483140
asked Dec 14 '15 at 23:19
JimJim
3641411
edited 1 hour ago
Rui F Ribeiro
41.5k1483140
asked Dec 14 '15 at 23:19
JimJim
3641411
edited 1 hour ago
Rui F Ribeiro
41.5k1483140
edited 1 hour ago
Rui F Ribeiro
41.5k1483140
edited 1 hour ago
Rui F Ribeiro
41.5k1483140
41.5k1483140
asked Dec 14 '15 at 23:19
JimJim
3641411
asked Dec 14 '15 at 23:19
JimJim
3641411
asked Dec 14 '15 at 23:19
JimJim
3641411
3641411
add a comment |
add a comment |
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