Interface Configuration Guide 7705 SAR Interfaces
Edition: 01 3HE 11011 AAAC TQZZA 105
On network ports, a LAG supports active/active and active/standby operation. For
active/standby operation the links must be in different subgroups. Links can be on
the same platform or adapter card/module or distributed over multiple components.
Load sharing is supported among the active links in a LAG group. Any tunnel type
(for example, IP, GRE, or MPLS) transporting any service type, any IP traffic, or any
labeled traffic (LER, LSR) can use the LAG load-sharing, active/active, and
active/standby functionality.
LAGs are supported on network 1+0 microwave links. Ports that are in a microwave
link can be added to the same LAG as ports that are not in a microwave link. Ports
belonging to a microwave link must have limited autonegotiation enabled before the
link can be added to a LAG.
A LAG that contains ports in a microwave link must have LACP enabled for
active/standby operation. Static LAG configuration (without LACP) is not supported
for active/standby LAGs with microwave-enabled ports.
On hybrid ports, a LAG supports active/active and active/standby operation. For
active/standby operation the links must be in different subgroups. Links can be on
the same platform or adapter card/module or distributed over multiple components.
Load sharing is supported among the active links in a LAG group.
A LAG group with assigned members can be converted from one mode to another
as long as the number of member ports are supported in the new mode and the ports
all support the new mode, none of the members belong to a microwave link, and the
LAG group is not associated with a network interface or a SAP.
A subgroup is a group of links within a LAG. On access, network, or hybrid ports, a
LAG can have a maximum of four subgroups and a subgroup can have links up to
the maximum number supported on the LAG. The LAG is active/active if there is only
one sub-group and is active/standby if there is more than one subgroup.
When configuring a LAG, most port features (port commands) can only be configured
on the primary member port. The configuration, or any change to the configuration,
is automatically propagated to any remaining ports within the same LAG. Operators
cannot modify the configurations on non-primary ports. For more information, see
Configuring LAG Parameters.
Note: For details on LAG scale per platform or adapter card, contact your Nokia Technical
support representative.
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