User guide

Managing Automatic Remote Configuration Download LACP Auto Detection and Automatic Link Aggregate Association
OmniSwitch AOS Release 7 Switch Management Guide March 2015 page 13-19
LACP Auto Detection and Automatic Link
Aggregate Association
DHCP Server Association and DHCP Client creation works on fixed ports. When an OmniSwitch is newly
introduced to a network, an assigned peer network device detects this device as new. If the peer device has
a link aggregate configuration on the detecting port, then it sends LACP PDU to the newly connected
OmniSwitch. In such instances, LACP PDUs must be acknowledged by OmniSwitch. The Remote
Configuration Manager on OmniSwitch detects any LACP PDUs on any ports and configures a link
aggregate automatically during Automatic Remote Configuration.
The following diagram illustrates the different network components required for Auto Remote
Configuration and LACP Auto Detection and Link Aggregate Association process:.
Network Components for LACP Auto Detection and Link Aggregate Association
LACP auto detection is enabled by default and operates on all ports on the OmniSwitch during the
Automatic Remote Configuration stage.
1 When an OmniSwitch detects LACP PDUs from a remote peer connected through an uplink port, it
configures that port as a LACP port and starts LACP handshake with the peer device.
2 The newly formed link aggregation is made a member of VLAN 127 and VLAN 1.
3 Once the remote configuration download is complete on this LACP port, the switch configuration file
can automatically configure the required ports for the link aggregate.
4 After the process is completed, this automatic link aggregate and related associations are deleted.
Note. The LACP auto detection mode is not supported when the switch boots up in normal mode (non-
remote configuration load mode). The LACP configuration at the peer device must not be changed once the
automatic link aggregate is created using the parameters in the LACP PDU sent from the peer device.
Alcatel-Lucent
OmniSwitch
Provides Switch IP, TFTP server IP
and instruction file name
DHCP
Server
TFTP Server
Stores the instruction file.
optionally the config
file and firmware
FTP/SFTP Server
Stores the firmware and
configuration for secure access
Network
with Router
or Gateway
Peer Device
LACP
Handshake and Auto
Link Aggregate Asso-
ciation