Network Troubleshooting¶
How to display status of network interfaces¶
[root@node01 ~] dladm show-phys
LINK MEDIA STATE SPEED DUPLEX DEVICE
bnx0 Ethernet up 1000 full bnx0
bnx1 Ethernet up 1000 full bnx1
How to display network interface MAC addresses¶
[root@node01 ~] dladm show-phys -m
LINK SLOT ADDRESS INUSE CLIENT
bnx0 primary 0:26:b9:53:27:58 yes aggr0-bnx0
bnx1 primary 0:26:b9:53:27:58 yes aggr0-bnx1
How to display a list of link aggregations¶
[root@node01 ~] dladm show-aggr
LINK POLICY ADDRPOLICY LACPACTIVITY LACPTIMER FLAGS
aggr0 L4 auto active short -----
aggr1 L4 auto active short -----
How to display extended information about link aggregations¶
[root@node01 ~] dladm show-aggr -x
LINK PORT SPEED DUPLEX STATE ADDRESS PORTSTATE
aggr0 -- 1000Mb full up 40:f2:e9:8:e5:ac --
igb0 1000Mb full up 40:f2:e9:8:e5:ac attached
igb1 1000Mb full up 40:f2:e9:8:e5:ad attached
aggr1 -- 1000Mb full up 40:f2:e9:8:e5:ae --
igb2 1000Mb full up 40:f2:e9:8:e5:ae attached
igb3 1000Mb full up 40:f2:e9:8:e5:af attached
How to display virtual network interfaces¶
[root@node01 ~] dladm show-vnic
LINK OVER SPEED MACADDRESS MACADDRTYPE VID ZONE
net0 aggr0 0 72:96:a1:3d:e9:87 fixed 0 a28faa4d-d0ee-4593-938a-f0d062022b02
net0 aggr0 0 b2:aa:d8:da:6d:4b fixed 0 f7860689-c435-4964-9f7d-2d2d70cfe389
How to display network traffic statistics in real-time¶
[root@node01 ~] dladm show-link -S -i 1
Link iKb/s oKb/s iPk/s oPk/s %Util
igb0 94.36 131.72 116.31 63.62 0.02
igb1 91.96 317.66 77.54 95.43 0.04
igb2 39.54 303.79 40.76 53.68 0.04
igb3 92.60 27.19 107.36 28.83 0.01
aggr0 186.31 450.06 194.83 160.04 0.07
aggr1 132.13 330.95 148.11 82.51 0.05
- Link - Link name.
- iKb/s - The amount of incoming network traffic in KB/s.
- iPk/s - The amount of incoming packets.
- oKb/s - The amount of outgoing network traffic in KB/s.
- oPk/s - The amount of outgoing packets.
- %Util - Link utilization percentage.
How to capture network traffic¶
It is possible to capture traffic of zones and VMs with the outside world in the global zone. On this network interface, we will see the network traffic separated into VLANs. Traffic capture options can be specified by using various filters. The list of supported filters is located in the snoop(1M) man page.
[root@node01 ~] snoop -rd aggr0
VLAN#5: 1.1.1.1 -> 2.2.2.2 DNS C example.com. Internet Addr ?
VLAN#1401: 3.3.3.3 -> 4.4.4.4 TCP D=50718 S=3389 Push Ack=3566272237 Seq=3060367199 Len=53 Win=255
VLAN#1401: 3.3.3.3 -> 4.4.4.4 TCP D=50389 S=3389 Ack=1994047464 Seq=3163671434 Len=1448 Win=256 Options=<nop,nop,tstamp 146343107 422995562>
VLAN#1401: 3.3.3.3 -> 4.4.4.4 TCP D=50389 S=3389 Push Ack=1994047464 Seq=3163672882 Len=220 Win=256 Options=<nop,nop,tstamp 146343107 422995562>
VLAN#1401: 4.4.4.4 -> 3.3.3.3 TCP D=3389 S=50389 Ack=3163673102 Seq=1994047464 Len=0 Win=4043 Options=<nop,nop,tstamp 422995613 146343107>
...
How to display zone network traffic¶
[root@node01 ~] snoop -rd net0 -z 76a321f5-1c8b-4b9e-8a0c-3d8f1f629e2a
Using device net0 (promiscuous mode)
1.1.1.1 -> (broadcast) ARP C Who is 2.2.2.2, 2.2.2.2 ?
1.1.1.1 -> 224.0.0.102 UDP D=1985 S=1985 LEN=80
1.1.1.1 -> 3.3.3.3 SMTP C port=38081
1.1.1.1 -> 3.3.3.3 SMTP C port=38081
4.4.4.4 -> 1.1.1.1 SMTP R port=55579
...