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This chapter includes the following sections:
Configuring the Chassis Discovery Policy
This discovery policy determines how the system reacts when you add a new chassis. If you create a chassis discovery policy, Cisco UCS Manager configures the chassis for the number of links between the chassis and the fabric interconnect specified in the policy.
Command or Action | Purpose | |||
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Step 1 | UCS-A# scope org / | Enters the root organization mode.
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Step 2 | UCS-A /org # scope chassis-disc-policy | Enters organization chassis discovery policy mode. |
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Step 3 | UCS-A /org/chassis-disc-policy # set action {1-link | 2-link | 4-link} | Specifies the number of links to the fabric interconnect that the chassis must have before it can be discovered. |
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Step 4 | UCS-A /org/chassis-disc-policy # set descr description | (Optional) Provides a description for the chassis discovery policy.
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Step 5 | UCS-A /org/chassis-disc-policy # set qualifier qualifier | (Optional) Uses the specified server pool policy qualifications to associates this policy with a server pool. |
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Step 6 | UCS-A /org/chassis-disc-policy # commit-buffer | Commits the transaction to the system configuration. |
The following example scopes to the default chassis discovery policy, sets it to discover chassis with four links to a fabric interconnect, provides a description for the policy, and specifies the server pool policy qualifications that will be used to qualify the chassis, and commits the transaction:
UCS-A# scope org / UCS-A /org # scope chassis-disc-policy UCS-A /org/chassis-disc-policy* # set action 4-link UCS-A /org/chassis-disc-policy* # set descr "This is an example chassis discovery policy." UCS-A /org/chassis-disc-policy* # set qualifier ExampleQual UCS-A /org/chassis-disc-policy* # commit-buffer UCS-A /org/chassis-disc-policy #
Configuring the Power Policy
The power policy is a global policy that specifies the redundancy for power supplies in all chassis in the Cisco UCS instance. This policy is also known as the PSU policy.
For more information about power supply redundancy, see Cisco UCS 5108 Server Chassis Hardware Installation Guide.
The following example configures the power policy to use grid redundancy and commits the transaction:
UCS-A# scope org / UCS-A /org # scope psu-policy UCS-A /org/psu-policy # set redundancy grid UCS-A /org/psu-policy* # commit-buffer UCS-A /org/psu-policy #
Configuring the Aging Time for the MAC Address Table
To efficiently switch packets between ports, the fabric interconnect maintains a MAC address table. It dynamically builds the MAC address table by using the MAC source address from the packets received and the associated port on which the packets were learned . The fabric interconnect uses an aging mechanism, defined by a configurable aging timer, to determine how long an entry remains in the MAC address table. If an address remains inactive for a specified number of seconds, it is removed from the MAC address table.
You can configure the amount of time (age) that a MAC address entry (MAC address and associated port) remains in the MAC address table.
Command or Action | Purpose | |
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Step 1 | UCS-A# scope eth-uplink | Enters Ethernet uplink mode. |
Step 2 | UCS-A /eth-uplink # set mac-aging {seconds | mode-default | never} | Specifies the aging time for the MAC address table. Use the mode-default keyword to set the aging time to a default value dependent on the configured Ethernet switching mode. For end-host mode, the default aging time is 7,200 seconds; for switch mode, the default aging time is 300 seconds. Use the never keyword to never remove MAC addresses from the table regardless of how long they have been idle. |
Step 3 | UCS-A /eth-uplink # commit-buffer | Commits the transaction to the system configuration. |
The following example sets the aging time for the MAC address table to 10,000 seconds and commits the transaction:
UCS-A# scope eth-uplink UCS-A /eth-uplink # set mac-aging 10000 UCS-A /eth-uplink* # commit-buffer UCS-A /eth-uplink #