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Interface Configuration
7750 SR OS Interface Configuration Guide
Page 297
All ports, when added to a LAG, must share the same characteristics (speed, duplex, etc.). An error
message will be displayed when adding ports that do not share the same characteristics. Hold-timers
must be 0. Ports that are part of a LAG must be configured with autonegotiate limited or disabled.
The
no
form of this command removes ports from the LAG.
Default
No ports are defined as members of a LAG.
Parameters
port-id —
The port ID configured or displayed in the
slot/mda/port
format.
priority
priority —
Port priority used by LACP. The port priority is also used to determine the
primary port. The port with the highest priority is the primary port. In the event of a tie, the
smallest port ID becomes the primary port.
Values
1 — 65535
subgroup
sub-group-id
—
This parameter identifies a LAG subgroup. When using subgroups in a
LAG, they should only be configured on one side of the LAG, not both. Only having one side
perform the active/standby selection will guarantee a consistent selection and fast convergence.
The active/standby selection will be signalled through LACP to the other side. The hold time
should be configured when using subgroups to prevent the LAG going down when switching
between active and standby links in case no links are usable for a short time, especially in case a
subgroup consists of one member.
Values
1 — 8 identifies a LAG subgroup.
The
auto-iom
subgroup is defined based on the IOM (all ports of the same IOM are
assigned to the same subgroup).
The
auto-mda
subgroup is defined based on the MDA.
port-threshold
Syntax
port-threshold
value
[
action
{
dynamic-cost
|
down
}
no port-threshold
Context
config>lag
lag-id
Description
This command configures the behavior for the Link Aggregation Group (LAG) if the number of
operational links is equal to or below a threshold level.
The
no
form of this command reverts to the default values.
Default
0 action down
Parameters
value —
The decimal integer threshold number of operational links for the LAG at or below which
the configured action will be invoked. If the number of operational links exceeds the port-
threshold value, any action taken for being below the threshold value will cease.
Values
0 — 7
action
{
dynamic-cost
|
down
}
—
Specifies the action to take if the number of active links in the
LAG is at or below the threshold value.
Summary of Contents for 7750 SR OS
Page 6: ...Page 6 7750 SR OS Interface Configuration Guide Table of Contents ...
Page 8: ...Page 8 7750 SR OS Interface Configuration Guide List of Tables ...
Page 10: ...Page 10 7750 SR OS Interface Configuration Guide List of Figures ...
Page 14: ...Preface Page 14 7750 SR OS Interface Configuration Guide ...
Page 16: ...Getting Started Page 16 7750 SR OS Interface Configuration Guide ...
Page 184: ...Card MDA and Port Command Reference Page 184 7750 SR OS Interface Configuration Guide ...
Page 438: ...Debug Commands Page 438 7750 SR OS Interface Configuration Guide ...
Page 444: ...Index Page 444 7750 SR OS Interface Configuration ...