Questions about teaming network nic's

kaplan71 · 02-02-2017, 02:45 PM

Hello --

We are running Red Hat Enterprise Linux 7.2 on a Dell PowerEdge R730xd system. Currently we have one nic connected to the network, and we are looking into setting up network teaming to increase the throughput to the server.

The output for the ifconfig command is the following:

Quote:

em1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet <ip address> netmask <subnet mask> broadcast <broadcast address>
inet6 fe80::1a66:daff:feea:4e10 prefixlen 64 scopeid 0x20<link>
ether 18:66:da:ea:4e:10 txqueuelen 1000 (Ethernet)
RX packets 670497344 bytes 954580886174 (889.0 GiB)
RX errors 0 dropped 3585 overruns 0 frame 0
TX packets 137082031 bytes 9528317318 (8.8 GiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 96

em2: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 18:66:da:ea:4e:11 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 98

em3: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 18:66:da:ea:4e:12 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 100

em4: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 18:66:da:ea:4e:13 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 101

idrac: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
ether 18:66:da:67:05:0f txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 0 (Local Loopback)
RX packets 43897 bytes 14630249 (13.9 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 43897 bytes 14630249 (13.9 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

p2p1: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 00:0a:f7:9a:f1:f8 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 102

p2p2: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 00:0a:f7:9a:f1:f9 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 103

p2p3: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 00:0a:f7:9a:f1:fa txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 102

p2p4: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 00:0a:f7:9a:f1:fb txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 103

The idrac and lo nic's are already accounted for, so it would seem the eligible nic's would be the following:

em2
em3
em4

Which would result in a, theoretical, throughput of four, 4, gigabits. I had several questions concerning this:

1. Am I correct with the list of eligible nic's?
2. What are the nic's p2p1 through 4 used for, and are they available for use?

TB0ne · 02-02-2017, 03:17 PM

Quote:

Originally Posted by kaplan71

Hello --
We are running Red Hat Enterprise Linux 7.2 on a Dell PowerEdge R730xd system. Currently we have one nic connected to the network, and we are looking into setting up network teaming to increase the throughput to the server. The output for the ifconfig command is the following:

The idrac and lo nic's are already accounted for, so it would seem the eligible nic's would be the following:
em2
em3
em4

Which would result in a, theoretical, throughput of four, 4, gigabits. I had several questions concerning this:
1. Am I correct with the list of eligible nic's?
2. What are the nic's p2p1 through 4 used for, and are they available for use?

You're using RHEL 7 on Dell servers...aren't you paying for support from both of them??? Did you look in the Red Hat knowledgebase?
https://access.redhat.com/documentat...k_Teaming.html
https://access.redhat.com/documentat...ce_Naming.html

..which explains such things? Both Dell and Red Hat support can assist you.