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This document describes how to configure the path selecion on the Cisco cBR Series Converged Broadband Router.
DOCSIS 3.1 Path Selection feature is enhanced to support OFDM downstream channels and OFDMA upstream channels. The RCC selection process is enhanced to include OFDM channels. The TCC selection process is enhanced to include OFDMA channels.
To configure the downstream bonding group with OFDM channel, follow the steps below:
enable
configure terminal
interface wideband-cable slot/subslot/bay:wideband-channel
description text
cable bundle id
cable rf-channels channel-list grouplist bandwidth-percent percentage-bandwidth  Note |
Channel 158 to 162 are specified as OFDM channel. |
To display the details of the downstream bonding group with OFDM channel, use the show running-config interface command as shown in the example below:
Router# show running-config interface wideband-cable 3/0/0:13
Building configuration...
Current configuration : 212 bytes
!
interface Wideband-Cable3/0/0:13
description D31-DSBG: 1 SC-QAM plus 1 OFDM
cable bundle 1
cable rf-channels channel-list 8 bandwidth-percent 30
cable rf-channels channel-list 158 bandwidth-percent 25
end
To configure the upstream bonding group with OFDMA channel, follow the steps below:
enable
configure terminal
interface cable slot/subslot/bay
cable upstream bonding-group id
upstream id
To display the details of the upstream bonding group with OFDMA channel, use the show running-config interface command as shown in the example below:
Router# show running-config interface cable 6/0/3
Building configuration...
Current configuration : 212 bytes
!
interface Cable6/0/3
load-interval 30
downstream Integrated-Cable 6/0/1 rf-channel 158
upstream 0 Upstream-Cable 1/0/0 us-channel 0
upstream 1 Upstream-Cable 1/0/0 us-channel 1
upstream 2 Upstream-Cable 1/0/0 us-channel 2
upstream 3 Upstream-Cable 1/0/0 us-channel 3
upstream 6 Upstream-Cable 1/0/0 us-channel 12
cable upstream balance-scheduling
cable upstream bonding-group 2
upstream 0
upstream 1
upstream 2
upstream 3
upstream 6
attributes 80000000
cable bundle 1
cable privacy accept-self-signed-certificate
!
To display the path selection status of a cable modem, use the show cable modem path-sel command as shown in the example below:
router#show cable modem 38c8.5cfe.efa6 path-sel
CM 38c8.5cfe.efa6 Path-Sel Info: 07:20
RCS Filter Result: Succeed
Candidate RCS List: 2
RCC-Id Owner-Id Preliminary RCP TLV-56 LBG SF-Attr CM-Attr
1 1 :12289 Pass Pass -- Pass Pass Pass
2 1 :12290 Pass Pass -- Pass Pass Pass
TCS Filter Result: Succeed
TCS Info:
TCS in CGD : 0x7 UCID: 1 2 3
TCS in Freq Range : 0x7 UCID: 1 2 3
TCS Impaired : 0x0
TCS Passed filters:
Preliminary : 0x7 UCID: 1 2 3
LB Group : 0x7 UCID: 1 2 3
SF Attr Mask : 0x7 UCID: 1 2 3
CM Attr Mask : 0x7 UCID: 1 2 3
Candidate US-BG List: 4
UBG-Id Chan-Mask Preliminary TLV-56 LBG SF-Attr CM-Attr
1 0x7 Pass -- Pass Pass Pass
65537 0x2 Pass -- Pass Pass Pass
65538 0x4 Pass -- Pass Pass Pass
65536 0x1 Pass -- Pass Pass Pass
Primary DS Chan Result: Skipped
Candidate Primary DS Chan List: 0
Primary US Chan Result: Skipped
Candidate Primary US Chan List: 0
To clear the path selection status for all CMs, use the clear cable modem all path-sel command as shown in the example below:
Router# clear cable modem all path-sel
Router# show cable modem c8fb.26a6.c46a path-sel
CM c8fb.26a6.c46a Path-Sel Info: N/A
Path-Sel status has been cleared after register online.
To verify the runtime RCCs on a cable interface, use the show cable mac-domain rcc command as shown in the example below:
Router# show cable mac-domain cable 7/0/0 rcc
RCC-ID RCP RCs MD-DS-SG CMs WB/RCC-TMPL D3.0 D3.1
4 00 00 00 00 00 16 0 1 WB (Wi7/0/0:0) Y Y
5 00 00 00 00 00 25 0 2 WB (Wi7/0/0:1) N Y
6 00 10 00 00 08 8 0 0 RCC-TMPL(3:1) Y N
7 00 00 00 00 00 4 0 0 WB (Wi7/0/0:4) Y Y
To display the detailed information for only DOCSIS 3.1 capable RCC, use the show cable mac-domain rcc simplified command as shown in the example below:
router#show cable mac-domain cable 7/0/0 rcc 5 simplified
RCC ID : 5
Created Via : Wideband - Wi7/0/0:1
CM attribute mask : 0x80000000
Primary Receive Channel List:
Chan Idx RF Chan DCID Freq
1 In7/0/0:0 1 453000000
Non-Primary Receive Channel List:
Chan Idx RF Chan DCID Freq
2 In7/0/0:1 2 459000000
3 In7/0/0:2 3 465000000
4 In7/0/0:3 4 471000000
5 In7/0/0:4 5 477000000
6 In7/0/0:5 6 483000000
7 In7/0/0:6 7 489000000
8 In7/0/0:7 8 495000000
9 In7/0/0:8 9 501000000
10 In7/0/0:9 10 507000000
11 In7/0/0:10 11 513000000
12 In7/0/0:11 12 519000000
13 In7/0/0:12 13 525000000
14 In7/0/0:13 14 531000000
15 In7/0/0:14 15 537000000
16 In7/0/0:15 16 543000000
17 In7/0/0:16 17 549000000
18 In7/0/0:17 18 555000000
19 In7/0/0:18 19 561000000
20 In7/0/0:19 20 567000000
21 In7/0/0:20 21 573000000
22 In7/0/0:21 22 579000000
23 In7/0/0:22 23 585000000
24 In7/0/0:23 24 591000000
25 In7/0/0:158 159 663000000
OFDM Receive Channel List:
Chan Idx RF Chan DCID PLC-Freq Profiles
25 In7/0/0:158 159 663000000 0 1 2
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Document Title |
Link |
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Cisco cBR Converged Broadband Routers Layer 2 and DOCSIS 3.0 Configuration Guide |
http://www.cisco.com/c/en/us/td/docs/cable/cbr/configuration/guide/b_cbr_layer2_docsis30.html |
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MIBs |
MIBs Link |
|---|---|
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To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use Cisco MIB Locator found at the following URL: |
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Description |
Link |
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Note |
The following table lists the software release in which a given feature is introduced. Unless noted otherwise, subsequent releases of that software release train also support that feature. |
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Feature Name |
Releases |
Feature Information |
|---|---|---|
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DOCSIS 3.1 Path Selection |
Cisco IOS XE Fuji 16.7.1 |
This feature was integrated on the Cisco cBR Series Converged Broadband Routers. |
|
DOCSIS 3.1 Upstream Path Selection |
Cisco IOS XE Fuji 16.7.1 |
This feature was integrated on the Cisco cBR Series Converged Broadband Routers. |
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