Distribution Option; Show Commands; Suppressing Spof Alarm For Xglc - Cisco ASR 5000 Administration Manual

Suppressing SPOF Alarm for XGLC

• S(x) S(y) More ports in Standby state on card x than card y
• W(x) W(y) More ports in Waiting state on card x than card y
• A(x) A(y) Fewer ports in Aggregated state on card x than card y
• Card y is preferred
• Card y is selected.

Distribution Option

The specified distribution option controls how the LAG hash map is generated. This option is set on the master
port for use by the whole LAG via the link-aggregation distribution command. The following table identifies
the distribution options (assuming port index 0,1,2,3 were selected):
Table 6: LAG Distribution Options
Distribution
Simple
Rotate
Block
Random

show Commands

You can verify the LAG configuration and monitor LAG performance via the following Exec mode CLI
commands:
• show configuration link-aggregation group group_number
• show link-aggregation { info | lacp info | statistics | table all | utilization table } group group_number
See the Command Line Interface Reference for detailed information on each command.
Suppressing SPOF Alarm for XGLC
An XGLC that has not been configured for horizontal port redundancy with an adjacent XGLC constitutes a
Single Point of Failure (SPOF). If the card or a port fails, service is disrupted and data is lost until the card is
replaced.
Link-aggregation can be configured to support port redundancy across non-redundant XGLCs by combining
multiple physical ports together to create a single high-bandwidth data path. Sharing load across the member
ports enhances connection reliability.
When XGLC ports are part of a LAG group, failure of a single port in the group will not result in data outage;
the data will be rerouted through other available links. An individual port that is part of a LAG group does
not constitute a SPOF.
ASR 5000 System Administration Guide, StarOS Release 21.1
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Meaning
Repetition of all selected port indices
Repetition of the rotated port indices
Blocks of the same port index
Based on pseudo random number
System Settings
Example
0123012301230123...
0123123023013012...
0000111122223333
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