[no] lcr lcr-id
config
This command enables access to the context to configure Line Card Redundancy (LCR) parameters on T1/E1 ports or links. When the lcr-id is specified, this command assigns an LCR group ID. Both working and protection adapter cards must be configured with the same LCR group ID and on the same card type. For SC-LCR, both working and protection adapter cards must be on the same 7705 SAR node. For MC-LCR, the working and protection adapter cards must be on different 7705 SAR nodes.
keyword
the LCR group ID, from 1 to 6
advertise-interval advertise-interval
no advertise-interval
config>lcr
This command specifies the time interval between ‟I am operational” messages sent by the protection and working adapter cards to their neighbors in an MC-LCR group. The advertise-interval value is valid only for MC-LCR.
10
the time interval, in tenths of a second, between transmitted operational messages
hold-time hold-time
no hold-time
config>lcr
This command specifies how much time can pass without the node receiving an advertise packet from its neighbor in an MC-LCR group before the neighbor is considered operationally down. The hold time is usually the advertise-interval value multiplied by 3.
specifies, in 100s of milliseconds, how long to wait for an LCR advertise packet before the neighbor in an MC-LCR group is considered operationally down
neighbor ip-address
no neighbor
config>lcr
This command specifies the neighbor IP address in an MC-LCR group. When the value of the neighbor IP address is set to 0.0.0.0, or not set, this implies that the LCR group is configured as an SC-LCR group.
The route to the neighbor must not traverse the MC-LCR member (working or protection) adapter cards. It is recommended that the neighbor be on a shared network between the nodes that are configured with the working and protection cards. The node should be connected with a direct interface to ensure optimum failover time.
By default, no neighbor address is configured and both the working and protection adapter cards should be configured as an SC-LCR group on the same node.
0.0.0.0
specifies the neighbor IP address for MC-LCR
protect-mda mda-id
no protect-mda
config>lcr
This command configures an adapter card that will act as the protection card for this LCR group.
The protection adapter card must contain only the default configuration and cannot belong to another LCR group. The protection card must be of the same type as the working adapter card for the LCR group; if it is not, the command will return an error.
A protection card can only be added if the working card already exists in the LCR group. The protection card must be removed from the configuration before the working card can be removed.
The protection card must be shut down before it can be removed from the LCR group. The inherited configuration for the protection card and the configured LCR operational commands for that card are not preserved when it is removed from the LCR group.
The no form of this command removes the protection card from the LCR group.
no protect-mda
the adapter card that will act as the protection card for this LCR group in the format slot/mda, where slot is the slot number of the IOM and mda is the slot number of the adapter card
revert-time minutes
no revert-time
config>lcr
This command configures how long the 7705 SAR waits before switching activity back to the working adapter card after it has been restored to service.
If the minutes value is changed, the change takes effect at the next initiation of the wait-to-restore (WTR) timer.
This command does not modify the duration of a WTR timer that has already been started. The WTR timer of a non-revertive switch can be assumed to be infinite.
The no form of this command restores the default (non-revertive) mode. The switch back does not occur unless the protection adapter card fails or activity is manually switched by the operator.
no revert-time
the time to wait, in minutes, before reverting to the working adapter card after it has been restored to service
working-mda mda-id
no working-mda
config>lcr
This command configures an adapter card that will act as the working card for this LCR group.
The working card must contain only the default configuration and cannot be part of another LCR group. The working card must be created before the protection card.
The working card must be shut down before it can be removed from an LCR group. The inherited configuration for the card and configured LCR operational commands for that card are not preserved when it is removed from the LCR group.
The no form of this command removes the working card from the LCR group. The working card can only be removed from the configuration after the protection card has been removed.
no working-mda
the adapter card that will act as the working card for this LCR group in the format slot/mda, where slot is the slot number of the IOM and mda is the slot number of the adapter card