Link Aggregation on Solaris 10
What is Link Aggregation?
An
aggregation is similar to an IPMP link created for failover, but has other
advantages:-
- An aggregation is treated as one
device for configuration and management, and uses only one IP address.
- In-bound as well as outbound
load spreading is provided, so extra bandwidth is available.
- Automatic failover is provided,
to the remaining working links in the aggregation.
- Policies can be applied to the
traffic flows.
- Parallel aggregations between
servers can be created, without going through a switch.
How to Set up Link Aggregation on Solaris 10?
è Configuration
in the switch
First of all
we need to make sure link all cables are connected to switch ( same vlan)
1. Connect to switch console
# telnet XX.XX.XX.XX
2. Enter to privileged mode and open configuration terminal
BR-telnet@FastIron SuperX Router>en
Password:
BR-telnet@FastIron SuperX Router#config
terminal
3. For each port of the bond enable link-aggregate
BR-telnet@FastIron SuperX Router(config)#interface ethernet 2/20
BR-telnet@FastIron SuperX Router(config-if-e1000-2/20)#link-aggregate active
BR-telnet@FastIron SuperX Router(config-if-e1000-2/20)#exit
BR-telnet@FastIron SuperX Router(config)#interface ethernet 2/21
BR-telnet@FastIron SuperX Router(config-if-e1000-2/21)#link-aggregate active
BR-telnet@FastIron SuperX Router(config-if-e1000-2/21)#exit
4. Quit configuration terminal and privileged mode, check for those ports
in the link- aggregated ports table and exit
BR-telnet@FastIron SuperX Router(config)#exit
BR-telnet@FastIron SuperX Router(config)#write memory
BR-telnet@FastIron SuperX Router#show
link-aggregate
System ID: 0012.f2b4.ae00
Long timeout: 120, default: 120
Short timeout: 3, default: 3
Port [Sys P] [Port P] [ Key ]
[Act][Tio][Agg][Syn][Col][Dis][Def][Exp][Ope]
------------------------------------------------------------------------------------------
2/20 1 1 483 Yes L Agg Syn Col Dis No No Ope
2/21 1 1 483 Yes L Agg Syn Col Dis No No Ope
------------------------------------------------------------------------------------------
BR-telnet@FastIron SuperX Router#exit
BR-telnet@FastIron SuperX Router>exit
è Configuration
on the Server
Login as
root and execute to verify what are the interfaces are up and available
# dladm
show-dev ( Following command will tell you that
nxge0 to nxg3 are up and available for link aggregate)
e1000g0 link: up speed: 1000 Mbps
duplex: full
e1000g1 link: up speed: 1000 Mbps
duplex: full
e1000g2 link: unknown speed: 0
Mbps duplex: half
e1000g3 link: unknown speed: 0
Mbps duplex: half
nxge0 link: up speed: 1000 Mbps
duplex: full
nxge1 link: up speed: 1000 Mbps
duplex: full
nxge2 link: up speed: 1000 Mbps
duplex: full
nxge3 link: up speed: 1000 Mbps
duplex: full
Another
command to verify is dladm
show-link
Create Link aggregation now:
# dladm create -aggr -d nxge0 -d nxge1 –d
nxge2 –d nxge3 1
Create aggr1 interface and plumb it
# ifconfig
aggr1 plumb 10.25.156.39 –broadcast 10.25.156.63 –netmask
255.255.255.192 up
Check the interface
# ifconfig –a
aggr1: flags=1000842 mtu 1500 index 2
inet
10.25.156.39 netmask ffffffe0 broadcast 10.25.156.63
ether
0:21:28:30:50:c6
Activate it
# dladm
modify-aggr -l active -t short 1
You can check policy and other information by using
# dladm
show-aggr
key: 1 (0x0001) policy: L2 address: 0:21:28:30:50:c6 (auto)
device address speed duplex link
state
nxge0 0:21:28:30:50:c6 1000
Mbps full up
attached
nxge1 0:21:28:30:50:c7 1000
Mbps full up
attached
nxge2
0:21:28:30:50:c8
1000 Mbps full
up attached
nxge3 0:21:28:30:50:c9 1000
Mbps full up
attached
Reboot the server
You can Check packets transferred and validation
#dladm
show-aggr -s
key:1
ipackets rbytes opackets obytes
%ipkts %opkts
Total 18817722
2325029336 7546157 1056461980
nxge0 4696030
580745736 1886522 264113080 25.0
25.0
nxge1 4696574
580788680 1886522 264113080 25.0
25.0
nxge2 4738703
583317764 1886570 264119800 25.2
25.0
nxge3 4686415
580177156 1886543 264116020 24.9
25.0
Other important
commands:
# dladm show-linkprop
