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Verifying

Cisco uBR7246 Universal Broadband Router Feature Enhancements 5

Verifying

The veriﬁcation tasks required by this version of the Cisco uBR7246 cable router are the same as

those described in the Cisco uBR7246 Universal Broadband Router Installation and Conﬁguration

Guide and the Voice, Video, and Home Applications Conﬁguration Guide.

Note the following:

• The controller must report being up.

• The comparison of the number of errors versus the number of error-free packets is a measure of

the link quality. The percentage of errors should be less than 1%.

Conﬁguration Examples

To illustrate conﬁguring spectrum groups, assume that an MC16 card is in slot 3 and is named

cable3/0. Its upstream ports are named U0 through U5. You want ports U0 through U3 to belong to

one combiner group, and ports U4 and U5 to belong to a different combiner group because of higher

subscriber penetration. In both combiner groups, the allocated spectrum should be three 3.2 MHz

slots centered at 21.6, 24.8, and 28.0 MHz. The allocated spectrum is 20.0 to 29.6 MHz. From global

conﬁguration mode, enter the conﬁgure terminal command. Then enter:

router(config)# cable spectrum-group 1 frequency 21600000

router(config)# cable spectrum-group 1 frequency 24800000

router(config)# cable spectrum-group 1 frequency 28000000

router(config)# cable spectrum-group 2 shared

router(config)# cable spectrum-group 2 frequency 21600000

router(config)# cable spectrum-group 2 frequency 24800000

router(config)# cable spectrum-group 2 frequency 28000000

Spectrum group 1 will be used for ports U0 through U3. Spectrum group 2 will be used for ports U4

and U5. Because ports U4 and U5 belong to the same combiner group, spectrum group 2 is

conﬁgured as shared. The shared keyword prevents frequency collision.

To assign the upstream ports to the frequency hop tables for slot 3, enter:

router(config)# interface Cable3/0

Then enter:

router(config-if)# cable u0 spectrum-group 1

router(config-if)# cable u1 spectrum-group 1

router(config-if)# cable u2 spectrum-group 1

router(config-if)# cable u3 spectrum-group 1

router(config-if)# cable u4 spectrum-group 2

router(config-if)# cable u5 spectrum-group 2

The upstream ports are assigned frequencies from their respective spectrum groups. Ports U0

through U3 will be set to 21.6 MHz. Ports U4 and U5 will be set to 21.6 and 24.8 MHz, respectively.

For additional conﬁguration examples, refer to the Cisco uBR7246 Universal Broadband Router

Installation and Conﬁguration Guide and the Voice, Video, and Home Applications Conﬁguration

Guide.

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Cisco 7246 - uBR Router Manual de usuario Pagina 5