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LAG/LACP
Link aggregation (LAG) refers to aggregating multiple physical network links in parallel in order to increase throughput beyond what a single link could sustain, and provide redundancy in case any of the links should fail.
Link Aggregation Control Protocol (LACP) refers to bundling of several physical ports together to form a single logical channel. Network devices use LACP to negotiate automatic bundling of links by sending LACP packets to its directly connected peer(s)
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| Info | ||||
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1, PicOS OVS supports LAG and LACP. 2, PicOS can support 48 LAG or LACP at most. Each LAG has a maximum of 8 member ports. 3, The port ranges in PicOS are as follows:
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Create a Static LAG
In following configuration, user can create LAG ae1, and add port 2 and port 3 into this LAG
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While dual-homing a host does not require a LAG configuration on the switch, this configuration illustrates steps required to setup LAG on the host connected to two different switches.
| Host LAG Configuration | Switch Port Configuration |
|---|---|
pica8@Ubuntu$ more /etc/modprobe.d/bonding.conf bonding mode=1 miimon=100 pica8@Ubuntu$ more /etc/network/interfaces
# NIC bonding config for LAG active-backup START auto eth1 iface eth1 inet manual bond-master bond0 bond-primary eth1 auto eth2 iface eth2 inet manual bond-master bond0 auto bond0 iface bond0 inet static address 10.0.0.20 netmask 255.255.255.0 bond-mode active-backup bond-miimon 100 bond-slaves none # NIC bonding config for LAG active-backup END
pica8@Ubuntu$ cat /proc/net/bonding/bond0 Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011)
Bonding Mode: fault-tolerance (active-backup) Primary Slave: eth1 (primary_reselect always) Currently Active Slave: eth1 MII Status: up MII Polling Interval (ms): 100 Up Delay (ms): 0 Down Delay (ms): 0
Slave Interface: eth2 MII Status: up Speed: 1000 Mbps Duplex: full Link Failure Count: 0 Permanent HW addr: 00:0c:29:70:2e:c2 Slave queue ID: 0
Slave Interface: eth1 MII Status: up Speed: 1000 Mbps Duplex: full Link Failure Count: 0 Permanent HW addr: 00:0c:29:70:2e:b8 Slave queue ID: 0 | OVS-Sw1$ovs-vsctl add-port br0 ge-1/1/1 vlan_mode=trunk tag=1 -- set interface ge-1/1/1 type=pica8
OVS-Sw2$ovs-vsctl add-port br0 ge-1/1/1 vlan_mode=trunk tag=1 -- set interface ge-1/1/1 type=pica8 |
Create a LACP Port
Following is the configuration on the host (running Ubuntu):
| Code Block |
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pica8@Ubuntu:~$ more /etc/modprobe.d/bonding.conf bonding mode=4 miimon=100 lacp_rate=1 pica8@Ubuntu:~$ more /etc/network/interfaces # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). # The loopback network interface auto lo iface lo inet loopback # The primary network interface auto eth0 iface eth0 inet dhcp # NIC bonding config with LACP START auto eth1 iface eth1 inet manual bond-master bond0 auto eth2 iface eth2 inet manual bond-master bond0 auto bond0 iface bond0 inet static address 10.0.0.10 netmask 255.255.255.0 bond-mode 802.3ad bond-miimon 100 bond-lacp-rate 1 bond-slaves none # NIC bonding config with LACP END pica8@Ubuntu:~$ /etc/init.d/networking restart sudo systemctl restart networking pica8@Ubuntu:~$ cat /proc/net/bonding/bond0 Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011) Bonding Mode: IEEE 802.3ad Dynamic link aggregation Transmit Hash Policy: layer2 (0) MII Status: up MII Polling Interval (ms): 100 Up Delay (ms): 0 Down Delay (ms): 0 802.3ad info LACP rate: fast Min links: 0 Aggregator selection policy (ad_select): stable Active Aggregator Info: Aggregator ID: 3 Number of ports: 2 Actor Key: 17 Partner Key: 1 Partner Mac Address: 00:11:11:11:11:11 Slave Interface: eth1 MII Status: up Speed: 1000 Mbps Duplex: full Link Failure Count: 0 Permanent HW addr: 00:0c:29:fd:75:ae Aggregator ID: 3 Slave queue ID: 0 Slave Interface: eth2 MII Status: up Speed: 1000 Mbps Duplex: full Link Failure Count: 0 Permanent HW addr: 00:0c:29:fd:75:b8 Aggregator ID: 3 Slave queue ID: 0 |
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LAG number index is shown as following:
| LAG Name | LAG Number |
|---|---|
| ae1 | 1025 |
| ae2 | 1026 |
| .. | .. |
| ae1023 | 2047 |
Display the LACP Information
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