Why one of virtual NICs called bond0? Announcing the arrival of Valued Associate #679: Cesar Manara Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern) Come Celebrate our 10 Year Anniversary!Why does ethernet have a minimum frame size specified?Why straight-through ethernet cables?Virtual Ethernet Adapter / Multiple MAC and IP address for one adapterMulti-NIC Linux machine's NICs are responding to each other's ARPs regardless of arp_filter settingVirtual interfaces with default routesWhy do ethernet cables have 8 wires?Bond0 Failover when link light stays up: High Availability NetworkDifferent speed on Internet connection by switching NICs. Can someone make sense of this?Is one 10 gig port the same as ten 1 gig portsubuntu-14.04 - why can I only connect only on one ethernet interface
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Why one of virtual NICs called bond0?
Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern)
Come Celebrate our 10 Year Anniversary!Why does ethernet have a minimum frame size specified?Why straight-through ethernet cables?Virtual Ethernet Adapter / Multiple MAC and IP address for one adapterMulti-NIC Linux machine's NICs are responding to each other's ARPs regardless of arp_filter settingVirtual interfaces with default routesWhy do ethernet cables have 8 wires?Bond0 Failover when link light stays up: High Availability NetworkDifferent speed on Internet connection by switching NICs. Can someone make sense of this?Is one 10 gig port the same as ten 1 gig portsubuntu-14.04 - why can I only connect only on one ethernet interface
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I just took over a very old network cluster(no documents and manual left) so I have to imagine the meaning of configuration by myself. Some of the servers' IP configure as following(when I issue ifconfig)
bond0: flags=5187<UP,BROADCAST,RUNNING,MASTER,MULTICAST>
inet 10.1.237.11 netmask 255.255.255.192 broadcast 10.1.237.63
ether 6c:90:af:68:5a:28 txqueuelen 0 (Ethernet)
bond0.901: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>
inet 147.146.67.13 netmask 255.255.255.240 broadcast 147.146.67.15
ether 6c:90:af:68:5a:28 txqueuelen 0 (Ethernet)
bond0.901:1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>
inet 147.185.211.5 netmask 255.255.255.0 broadcast 147.185.211.255
ether 6c:90:af:68:5a:28 txqueuelen 0 (Ethernet)
eth2: flags=6211<UP,BROADCAST,RUNNING,SLAVE,MULTICAST>
ether 6c:90:af:68:5a:28 txqueuelen 1000 (Ethernet)
eth3: flags=6211<UP,BROADCAST,RUNNING,SLAVE,MULTICAST>
ether 6c:90:af:68:5a:28 txqueuelen 1000 (Ethernet)
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
loop txqueuelen 0 (Local Loopback)
From the same mac address, I can see there is only one NIC. I was told that bond0 for inner IP, bond0.901 for internet IP, bond0.901:1 for Anycast IP. So my question is that what do eth2 and eth3 for and why one of the virtual NIC called bond0, is there anything need to be bond together?
When I issued the command: lspci|grep Ether, I got the following:
01:00.0 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)
01:00.1 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)
01:00.2 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)
01:00.3 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)
04:00.0 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)
04:00.1 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)
07:00.0 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)
07:00.1 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)
09:00.0 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)
09:00.1 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)
Does the above mean I have 10 physical Network cards please?
ethernet
asked 5 hours ago
JackJack
1085
New contributor
Jack is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
I just took over a very old network cluster(no documents and manual left) so I have to imagine the meaning of configuration by myself. Some of the servers' IP configure as following(when I issue ifconfig)
bond0: flags=5187<UP,BROADCAST,RUNNING,MASTER,MULTICAST>
inet 10.1.237.11 netmask 255.255.255.192 broadcast 10.1.237.63
ether 6c:90:af:68:5a:28 txqueuelen 0 (Ethernet)
bond0.901: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>
inet 147.146.67.13 netmask 255.255.255.240 broadcast 147.146.67.15
ether 6c:90:af:68:5a:28 txqueuelen 0 (Ethernet)
bond0.901:1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>
inet 147.185.211.5 netmask 255.255.255.0 broadcast 147.185.211.255
ether 6c:90:af:68:5a:28 txqueuelen 0 (Ethernet)
eth2: flags=6211<UP,BROADCAST,RUNNING,SLAVE,MULTICAST>
ether 6c:90:af:68:5a:28 txqueuelen 1000 (Ethernet)
eth3: flags=6211<UP,BROADCAST,RUNNING,SLAVE,MULTICAST>
ether 6c:90:af:68:5a:28 txqueuelen 1000 (Ethernet)
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
loop txqueuelen 0 (Local Loopback)
From the same mac address, I can see there is only one NIC. I was told that bond0 for inner IP, bond0.901 for internet IP, bond0.901:1 for Anycast IP. So my question is that what do eth2 and eth3 for and why one of the virtual NIC called bond0, is there anything need to be bond together?
When I issued the command: lspci|grep Ether, I got the following:
01:00.0 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)
01:00.1 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)
01:00.2 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)
01:00.3 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)
04:00.0 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)
04:00.1 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)
07:00.0 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)
07:00.1 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)
09:00.0 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)
09:00.1 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)
Does the above mean I have 10 physical Network cards please?
ethernet
asked 5 hours ago
JackJack
1085
New contributor
Jack is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
What does the output ofifenslave -aandip link showandip addr showlook like?
– Zoredache
5 hours ago
1
Does the above mean I have 10 physical Network cards please- Sure looks like it. Not sure which one of your interfaces are actually being used though.
– Zoredache
2 hours ago
add a comment |
I just took over a very old network cluster(no documents and manual left) so I have to imagine the meaning of configuration by myself. Some of the servers' IP configure as following(when I issue ifconfig)
bond0: flags=5187<UP,BROADCAST,RUNNING,MASTER,MULTICAST>
inet 10.1.237.11 netmask 255.255.255.192 broadcast 10.1.237.63
ether 6c:90:af:68:5a:28 txqueuelen 0 (Ethernet)
bond0.901: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>
inet 147.146.67.13 netmask 255.255.255.240 broadcast 147.146.67.15
ether 6c:90:af:68:5a:28 txqueuelen 0 (Ethernet)
bond0.901:1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>
inet 147.185.211.5 netmask 255.255.255.0 broadcast 147.185.211.255
ether 6c:90:af:68:5a:28 txqueuelen 0 (Ethernet)
eth2: flags=6211<UP,BROADCAST,RUNNING,SLAVE,MULTICAST>
ether 6c:90:af:68:5a:28 txqueuelen 1000 (Ethernet)
eth3: flags=6211<UP,BROADCAST,RUNNING,SLAVE,MULTICAST>
ether 6c:90:af:68:5a:28 txqueuelen 1000 (Ethernet)
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
loop txqueuelen 0 (Local Loopback)
From the same mac address, I can see there is only one NIC. I was told that bond0 for inner IP, bond0.901 for internet IP, bond0.901:1 for Anycast IP. So my question is that what do eth2 and eth3 for and why one of the virtual NIC called bond0, is there anything need to be bond together?
When I issued the command: lspci|grep Ether, I got the following:
01:00.0 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)
01:00.1 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)
01:00.2 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)
01:00.3 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)
04:00.0 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)
04:00.1 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)
07:00.0 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)
07:00.1 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)
09:00.0 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)
09:00.1 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)
Does the above mean I have 10 physical Network cards please?
ethernet
asked 5 hours ago
JackJack
1085
New contributor
Jack is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I just took over a very old network cluster(no documents and manual left) so I have to imagine the meaning of configuration by myself. Some of the servers' IP configure as following(when I issue ifconfig)
bond0: flags=5187<UP,BROADCAST,RUNNING,MASTER,MULTICAST>
inet 10.1.237.11 netmask 255.255.255.192 broadcast 10.1.237.63
ether 6c:90:af:68:5a:28 txqueuelen 0 (Ethernet)
bond0.901: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>
inet 147.146.67.13 netmask 255.255.255.240 broadcast 147.146.67.15
ether 6c:90:af:68:5a:28 txqueuelen 0 (Ethernet)
bond0.901:1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>
inet 147.185.211.5 netmask 255.255.255.0 broadcast 147.185.211.255
ether 6c:90:af:68:5a:28 txqueuelen 0 (Ethernet)
eth2: flags=6211<UP,BROADCAST,RUNNING,SLAVE,MULTICAST>
ether 6c:90:af:68:5a:28 txqueuelen 1000 (Ethernet)
eth3: flags=6211<UP,BROADCAST,RUNNING,SLAVE,MULTICAST>
ether 6c:90:af:68:5a:28 txqueuelen 1000 (Ethernet)
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
loop txqueuelen 0 (Local Loopback)
From the same mac address, I can see there is only one NIC. I was told that bond0 for inner IP, bond0.901 for internet IP, bond0.901:1 for Anycast IP. So my question is that what do eth2 and eth3 for and why one of the virtual NIC called bond0, is there anything need to be bond together?
When I issued the command: lspci|grep Ether, I got the following:
01:00.0 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)
01:00.1 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)
01:00.2 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)
01:00.3 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)
04:00.0 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)
04:00.1 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)
07:00.0 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)
07:00.1 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)
09:00.0 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)
09:00.1 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)
Does the above mean I have 10 physical Network cards please?
ethernet
ethernet
asked 5 hours ago
JackJack
1085
New contributor
Jack is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 5 hours ago
JackJack
1085
New contributor
Jack is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 2 hours ago
Jack
asked 5 hours ago
JackJack
1085
New contributor
Jack is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 5 hours ago
JackJack
1085
asked 5 hours ago
JackJack
1085
1085
New contributor
Jack is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Jack is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Jack is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
What does the output ofifenslave -aandip link showandip addr showlook like?
– Zoredache
5 hours ago
1
Does the above mean I have 10 physical Network cards please- Sure looks like it. Not sure which one of your interfaces are actually being used though.
– Zoredache
2 hours ago
add a comment |
What does the output ofifenslave -aandip link showandip addr showlook like?
– Zoredache
5 hours ago
1
Does the above mean I have 10 physical Network cards please- Sure looks like it. Not sure which one of your interfaces are actually being used though.
– Zoredache
2 hours ago
What does the output of
ifenslave -a and ip link show and ip addr show look like?– Zoredache
5 hours ago
What does the output of
ifenslave -a and ip link show and ip addr show look like?– Zoredache
5 hours ago
1
1
Does the above mean I have 10 physical Network cards please - Sure looks like it. Not sure which one of your interfaces are actually being used though.– Zoredache
2 hours ago
Does the above mean I have 10 physical Network cards please - Sure looks like it. Not sure which one of your interfaces are actually being used though.– Zoredache
2 hours ago
add a comment |
1 Answer
1
active
oldest
votes
I suspect that eth2, and eth3 are the physical devices that make up the bond0 device. See the master/slave flags. But your system probably has 2 physical interfaces, these are being combined in some kind of fault tolerance, or link aggregation setup. Try looking at the output of these tools which query the physical hardware lspci | grep Ether, or lshw -class network. You probably will see at least 2 interfaces.
bond0: flags=5187<UP,BROADCAST,RUNNING,MASTER,MULTICAST>
eth2: flags=6211<UP,BROADCAST,RUNNING,SLAVE,MULTICAST>
eth3: flags=6211<UP,BROADCAST,RUNNING,SLAVE,MULTICAST>
The contents of the file /proc/net/bonding/bond0 would tell you more.
- Bonding docs https://wiki.linuxfoundation.org/networking/bonding#ethernet-device-renaming
The bond0.901 is a virtual device allowing for a tagged vlan 901 on bond0.
The bond0.901:1 is just an secondary IP address for the bond0.901 VLAN 901 interface. This is not a real interface, or even a virtual one. This 'interface' is just just a way for ifconfig to show you the second address. But it is a deprecated tool that can give you confusing output like this. Use ip addr, or ip link instead.
answered 5 hours ago
ZoredacheZoredache
112k30231379
Thank you! I appended description on my question about lspci results. And, you mentioned VLAN 901, where can I find the VLAN config please, what purpose of this VLAN please.
– Jack
2 hours ago
1
No idea what it is for, and no idea where it is configured. There is no way for me to possibly know what it is for. It is probably something local to your network environment. The location for the configuration is distro specific. On Debian it might be under /etc/network/interfaces, but it might also be under /etc/systemd/network, or maybe one of a dozen other places.
– Zoredache
2 hours ago
one more question please, should the Switch has 901 Vlan configure, but I didn't find this Vlan in switch.
– Jack
1 hour ago
Modern Linux systems no longer even installifconfigandrouteby default anymore, unless some legacy package gets installed that needs them. It's a good idea to get out of the habit of using them.
– Michael Hampton♦
40 mins ago
add a comment |
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1 Answer
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active
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1 Answer
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active
oldest
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I suspect that eth2, and eth3 are the physical devices that make up the bond0 device. See the master/slave flags. But your system probably has 2 physical interfaces, these are being combined in some kind of fault tolerance, or link aggregation setup. Try looking at the output of these tools which query the physical hardware lspci | grep Ether, or lshw -class network. You probably will see at least 2 interfaces.
bond0: flags=5187<UP,BROADCAST,RUNNING,MASTER,MULTICAST>
eth2: flags=6211<UP,BROADCAST,RUNNING,SLAVE,MULTICAST>
eth3: flags=6211<UP,BROADCAST,RUNNING,SLAVE,MULTICAST>
The contents of the file /proc/net/bonding/bond0 would tell you more.
- Bonding docs https://wiki.linuxfoundation.org/networking/bonding#ethernet-device-renaming
The bond0.901 is a virtual device allowing for a tagged vlan 901 on bond0.
The bond0.901:1 is just an secondary IP address for the bond0.901 VLAN 901 interface. This is not a real interface, or even a virtual one. This 'interface' is just just a way for ifconfig to show you the second address. But it is a deprecated tool that can give you confusing output like this. Use ip addr, or ip link instead.
answered 5 hours ago
ZoredacheZoredache
112k30231379
Thank you! I appended description on my question about lspci results. And, you mentioned VLAN 901, where can I find the VLAN config please, what purpose of this VLAN please.
– Jack
2 hours ago
1
No idea what it is for, and no idea where it is configured. There is no way for me to possibly know what it is for. It is probably something local to your network environment. The location for the configuration is distro specific. On Debian it might be under /etc/network/interfaces, but it might also be under /etc/systemd/network, or maybe one of a dozen other places.
– Zoredache
2 hours ago
one more question please, should the Switch has 901 Vlan configure, but I didn't find this Vlan in switch.
– Jack
1 hour ago
Modern Linux systems no longer even installifconfigandrouteby default anymore, unless some legacy package gets installed that needs them. It's a good idea to get out of the habit of using them.
– Michael Hampton♦
40 mins ago
add a comment |
I suspect that eth2, and eth3 are the physical devices that make up the bond0 device. See the master/slave flags. But your system probably has 2 physical interfaces, these are being combined in some kind of fault tolerance, or link aggregation setup. Try looking at the output of these tools which query the physical hardware lspci | grep Ether, or lshw -class network. You probably will see at least 2 interfaces.
bond0: flags=5187<UP,BROADCAST,RUNNING,MASTER,MULTICAST>
eth2: flags=6211<UP,BROADCAST,RUNNING,SLAVE,MULTICAST>
eth3: flags=6211<UP,BROADCAST,RUNNING,SLAVE,MULTICAST>
The contents of the file /proc/net/bonding/bond0 would tell you more.
- Bonding docs https://wiki.linuxfoundation.org/networking/bonding#ethernet-device-renaming
The bond0.901 is a virtual device allowing for a tagged vlan 901 on bond0.
The bond0.901:1 is just an secondary IP address for the bond0.901 VLAN 901 interface. This is not a real interface, or even a virtual one. This 'interface' is just just a way for ifconfig to show you the second address. But it is a deprecated tool that can give you confusing output like this. Use ip addr, or ip link instead.
answered 5 hours ago
ZoredacheZoredache
112k30231379
Thank you! I appended description on my question about lspci results. And, you mentioned VLAN 901, where can I find the VLAN config please, what purpose of this VLAN please.
– Jack
2 hours ago
1
No idea what it is for, and no idea where it is configured. There is no way for me to possibly know what it is for. It is probably something local to your network environment. The location for the configuration is distro specific. On Debian it might be under /etc/network/interfaces, but it might also be under /etc/systemd/network, or maybe one of a dozen other places.
– Zoredache
2 hours ago
one more question please, should the Switch has 901 Vlan configure, but I didn't find this Vlan in switch.
– Jack
1 hour ago
Modern Linux systems no longer even installifconfigandrouteby default anymore, unless some legacy package gets installed that needs them. It's a good idea to get out of the habit of using them.
– Michael Hampton♦
40 mins ago
add a comment |
I suspect that eth2, and eth3 are the physical devices that make up the bond0 device. See the master/slave flags. But your system probably has 2 physical interfaces, these are being combined in some kind of fault tolerance, or link aggregation setup. Try looking at the output of these tools which query the physical hardware lspci | grep Ether, or lshw -class network. You probably will see at least 2 interfaces.
bond0: flags=5187<UP,BROADCAST,RUNNING,MASTER,MULTICAST>
eth2: flags=6211<UP,BROADCAST,RUNNING,SLAVE,MULTICAST>
eth3: flags=6211<UP,BROADCAST,RUNNING,SLAVE,MULTICAST>
The contents of the file /proc/net/bonding/bond0 would tell you more.
- Bonding docs https://wiki.linuxfoundation.org/networking/bonding#ethernet-device-renaming
The bond0.901 is a virtual device allowing for a tagged vlan 901 on bond0.
The bond0.901:1 is just an secondary IP address for the bond0.901 VLAN 901 interface. This is not a real interface, or even a virtual one. This 'interface' is just just a way for ifconfig to show you the second address. But it is a deprecated tool that can give you confusing output like this. Use ip addr, or ip link instead.
answered 5 hours ago
ZoredacheZoredache
112k30231379
I suspect that eth2, and eth3 are the physical devices that make up the bond0 device. See the master/slave flags. But your system probably has 2 physical interfaces, these are being combined in some kind of fault tolerance, or link aggregation setup. Try looking at the output of these tools which query the physical hardware lspci | grep Ether, or lshw -class network. You probably will see at least 2 interfaces.
bond0: flags=5187<UP,BROADCAST,RUNNING,MASTER,MULTICAST>
eth2: flags=6211<UP,BROADCAST,RUNNING,SLAVE,MULTICAST>
eth3: flags=6211<UP,BROADCAST,RUNNING,SLAVE,MULTICAST>
The contents of the file /proc/net/bonding/bond0 would tell you more.
- Bonding docs https://wiki.linuxfoundation.org/networking/bonding#ethernet-device-renaming
The bond0.901 is a virtual device allowing for a tagged vlan 901 on bond0.
The bond0.901:1 is just an secondary IP address for the bond0.901 VLAN 901 interface. This is not a real interface, or even a virtual one. This 'interface' is just just a way for ifconfig to show you the second address. But it is a deprecated tool that can give you confusing output like this. Use ip addr, or ip link instead.
answered 5 hours ago
ZoredacheZoredache
112k30231379
edited 4 hours ago
answered 5 hours ago
ZoredacheZoredache
112k30231379
answered 5 hours ago
ZoredacheZoredache
112k30231379
answered 5 hours ago
ZoredacheZoredache
112k30231379
112k30231379
Thank you! I appended description on my question about lspci results. And, you mentioned VLAN 901, where can I find the VLAN config please, what purpose of this VLAN please.
– Jack
2 hours ago
1
No idea what it is for, and no idea where it is configured. There is no way for me to possibly know what it is for. It is probably something local to your network environment. The location for the configuration is distro specific. On Debian it might be under /etc/network/interfaces, but it might also be under /etc/systemd/network, or maybe one of a dozen other places.
– Zoredache
2 hours ago
one more question please, should the Switch has 901 Vlan configure, but I didn't find this Vlan in switch.
– Jack
1 hour ago
Modern Linux systems no longer even installifconfigandrouteby default anymore, unless some legacy package gets installed that needs them. It's a good idea to get out of the habit of using them.
– Michael Hampton♦
40 mins ago
add a comment |
Thank you! I appended description on my question about lspci results. And, you mentioned VLAN 901, where can I find the VLAN config please, what purpose of this VLAN please.
– Jack
2 hours ago
1
No idea what it is for, and no idea where it is configured. There is no way for me to possibly know what it is for. It is probably something local to your network environment. The location for the configuration is distro specific. On Debian it might be under /etc/network/interfaces, but it might also be under /etc/systemd/network, or maybe one of a dozen other places.
– Zoredache
2 hours ago
one more question please, should the Switch has 901 Vlan configure, but I didn't find this Vlan in switch.
– Jack
1 hour ago
Modern Linux systems no longer even installifconfigandrouteby default anymore, unless some legacy package gets installed that needs them. It's a good idea to get out of the habit of using them.
– Michael Hampton♦
40 mins ago
Thank you! I appended description on my question about lspci results. And, you mentioned VLAN 901, where can I find the VLAN config please, what purpose of this VLAN please.
– Jack
2 hours ago
Thank you! I appended description on my question about lspci results. And, you mentioned VLAN 901, where can I find the VLAN config please, what purpose of this VLAN please.
– Jack
2 hours ago
1
1
No idea what it is for, and no idea where it is configured. There is no way for me to possibly know what it is for. It is probably something local to your network environment. The location for the configuration is distro specific. On Debian it might be under /etc/network/interfaces, but it might also be under /etc/systemd/network, or maybe one of a dozen other places.
– Zoredache
2 hours ago
No idea what it is for, and no idea where it is configured. There is no way for me to possibly know what it is for. It is probably something local to your network environment. The location for the configuration is distro specific. On Debian it might be under /etc/network/interfaces, but it might also be under /etc/systemd/network, or maybe one of a dozen other places.
– Zoredache
2 hours ago
one more question please, should the Switch has 901 Vlan configure, but I didn't find this Vlan in switch.
– Jack
1 hour ago
one more question please, should the Switch has 901 Vlan configure, but I didn't find this Vlan in switch.
– Jack
1 hour ago
Modern Linux systems no longer even install
ifconfig and route by default anymore, unless some legacy package gets installed that needs them. It's a good idea to get out of the habit of using them.– Michael Hampton♦
40 mins ago
Modern Linux systems no longer even install
ifconfig and route by default anymore, unless some legacy package gets installed that needs them. It's a good idea to get out of the habit of using them.– Michael Hampton♦
40 mins ago
add a comment |
Jack is a new contributor. Be nice, and check out our Code of Conduct.
Jack is a new contributor. Be nice, and check out our Code of Conduct.
Jack is a new contributor. Be nice, and check out our Code of Conduct.
Jack is a new contributor. Be nice, and check out our Code of Conduct.
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What does the output of
ifenslave -aandip link showandip addr showlook like?– Zoredache
5 hours ago
1
Does the above mean I have 10 physical Network cards please- Sure looks like it. Not sure which one of your interfaces are actually being used though.– Zoredache
2 hours ago