Cisco Remote PHY Device Downstream Virtual Splitting

Finding Feature Information

Your software release may not support all the features documented in this module. For the latest feature information and caveats, see the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the Feature Information Table at the end of this document.

Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to http://tools.cisco.com/ITDIT/CFN/. An account on http://www.cisco.com/ is not required.

Hardware Compatibility Matrix for Cisco Remote PHY Device


Note

The hardware components introduced in a given Cisco Remote PHY Device Software Release are supported in all subsequent releases unless otherwise specified.

Table 1. Hardware Compatibility Matrix for the Cisco Remote PHY Device

Cisco HFC Plaform

Remote PHY Device

Cisco GS7000 Node

Cisco 1x2 RPD Software 1.1 and Later Releases

Cisco Remote PHY Device 1x2

  • PID—RPD-1X2=

Information about RPD Downstream Virtual Splitting

The primary use case for multicast delivery between CCAP-core and the RPD is for the delivery of broadcast video services from a single CCAP-core element to a number of RPDs. This allows the system to scale by allowing a single CCAP-core element to generate and serve streams to all the RPDs that are configured to receive the same broadcast lineup. Since broadcast serving groups are quite large (~100,000 or more subscribers), using multicast to deliver the same copy to hundreds of remote PHY devices provides significant cost savings for operators. This mechanism can be used for broadcast video delivered via MPEG QAM channels or for that delivered via IP over DOCSIS. It is meant for the replication of an entire QAM channel to multiple RPDs.

How to Configure RPD Downstream Virtual Splitting

This section describes how to configure RPD Downstream Virtual Splitting on Cisco cBR-8.

Configuring Multicast DEPI Pool

To configure the multicast DEPI pool, complete the following procedure: 

configure terminal  
cable depi multicast pool  id 
ip address  ip mask

To verify the multicast DEPI pool configuration, use the show cable depi multicast pool command as shown in the example below: 

Router# show cable depi multicast pool  
POOL ID    Net IP         Net Mask       DESCRIPTION
1          225.225.225.0  255.255.255.0  
2          224.244.244.0  255.255.255.0

Enabling Multicast Sharing under Downstream Controller Profile

To enable the multicast sharing under downstream controller profile, complete the following procedure: 

configure terminal  
cable downstream controller-profile  id 
multicast-pool  id

Then configure the other parameters of the controller profile and related RF channels.

To verify the multicast sharing is enabled under the downstream controller profile, use the show cable downstream controller-profile command as shown in the example below: 

Router# show cable downstream controller-profile 1  
Load for five secs: 8%/1%; one minute: 10%; five minutes: 10%
No time source, *07:14:32.551 CST Tue Nov 15 2016
Downstream controller-profile 1
Description:
Downstream controller-profile 1 is being used by controller Downstream-Cable:
  3/0/0,
  Admin:  UP
  MaxOfdmSpectrum: 0
  MaxCarrier: 128
  BasePower: 33.0 dBmV
  Mode: normal
  Frequency profile: unconfigured
  DS Splitting: Yes
  Multicast Pool ID: 1

Configuring the RPD with the Same Downstream Controller and Profile

To configure the RPDs with the same downstream controller and profile, complete the following procedure: 

configure terminal  
cable rpd  name 
identifier  id 
core-interface TenGigabitEthernet  slot/subslot/port 
principal  
rpd-ds 0 downstream-cable  slot/subslot/port profile  id 
rpd-us 0 upstream-cable  slot/subslot/port profile  id 
r-dti  id 
rpd-event profile  id

Note

Configure at least 2 RPDs with the same downstream controller and profile to implement the multicast DEPI.

Configuring the RPDs to different fiber-nodes

To configure the RPDs to different fiber-nodes, complete the following procedure: 

configure terminal  
cable fiber-node  id 
downstream Downstream-Cable  slot/subslot/port 
upstream Upstream-Cable  slot/subslot/port

Note

Configure at least 2 fiber-nodes with the same downstream controller to implement the multicast DEPI.

Configuring the RPDs to MAC Domain

To configure the RPDs to the MAC domain, complete the following procedure: 

configure terminal  
interface cable  slot/subslot/port 
downstream Downstream-Cable  slot/subslot/port rf-channel  id 
upstream  index Upstream-Cable  slot/subslot/port us-channel  index 
cable upstream  index jumbo-grants  
cable upstream balance-scheduling  
cable upstream bonding-group  id 
upstream  id 
attributes 800000F0  
cable bundle  id 
cable map-advance static  value 
cable sid-cluster-group num-of-cluster  value 
cable sid-cluster-switching max-request  value

Note

Different RPDs can be configured to share the same downstream controller under one MAC domain or different MAC domains.

Enabling Multicast on Cisco cBR-8 Router

To enable the multicast on cBR-8, complete the following procedure: 

configure terminal  
ip multicast-routing distributed

Enabling Multicast on Layer 2 Switch

To enable multicast on Layer 2 switch, complete the following procedure: 

configure terminal  
ip igmp snooping  
vlan configuration  vlan 
ip igmp snooping querier  ip

Only need to create IGMP Snooping Group on one switch between DPIC and RPD.

Create IGMP Snooping Group under vlan which is used for connection between DPIC and RPD.

IP address used for IGMP snooping querier can be any address that is not conflict with the existing IP address in the system.

Enabling Multicast on Layer 3 Router

To enable multicast on Layer 3 router, complete the following procedure: 

configure terminal  
ip pim ssm default  
interface gigabitEthernet 0/0/0  
ip pim sparse-dense-mode  
ip igmp version 3

SSM must be enabled on all routers between DPIC and RPD.

All PIM neighbor must be enabled on all routers.

PIM neighbor can use sparse-dense-mode or sparse-mode.

Verifying RPD Downstream Virtual Splitting Configuration on cBR-8 Side

To verify the RPD Downstream Virtual Splitting configuration on cBR-8 side, complete the procedure as shown in the example below, and check if these criteria are met:

  • The remote session ID begins with 0x8 in the output of the show cable rpd depi | in Ds command. 

    Router# show cable rpd depi | in Ds  
0x40003F21 0x80003D22 1377638051 Ds3/0/0:0       est    04:20:36 1          P
0x40003F31 0x80003D32 1377638051 Ds3/0/0:16      est    04:20:35 3          P
0x40003F41 0x80003D42 1377638051 Ds3/0/0:32      est    04:20:35 5          P
0x40003F39 0x80003D3A 1377638051 Ds3/0/0:24      est    04:20:35 4          P
0x40003F29 0x80003D2A 1377638051 Ds3/0/0:8       est    04:20:34 2          P
0x40103F21 0x80003D22 1404837649 Ds3/0/0:0       est    00:07:21 14         P
0x40103F39 0x80003D3A 1404837649 Ds3/0/0:24      est    00:07:21 17         P
0x40103F41 0x80003D42 1404837649 Ds3/0/0:32      est    00:07:21 18         P
0x40103F29 0x80003D2A 1404837649 Ds3/0/0:8       est    00:07:21 15         P
0x40103F31 0x80003D32 1404837649 Ds3/0/0:16      est    00:07:21 16         P

  • There is assigned IP and pool ID in the output of the show cable depi multicast ip all command. 

    Router# show cable depi multicast ip all  
Load for five secs: 7%/2%; one minute: 8%; five minutes: 8%
No time source, *23:00:55.344 CST Sun Nov 13 2016
ASSIGNED IP      POOL ID    CONTROLLER
225.225.225.0    1          3/0/0

  • The cable modem is online in the output of the show cable modem rpd command. 

    Router# show cable modem  
Load for five secs: 8%/3%; one minute: 9%; five minutes: 9%
No time source, *16:06:52.191 CST Thu Mar 2 2017
                                                                                       D
MAC Address    IP Address      I/F           MAC               Prim  RxPwr  Timing Num I
                                             State             Sid   (dBmv) Offset CPE P
5039.558a.6c1c 40.242.0.17     C7/0/0/U1     online            5     0.50   816    0   N
5039.558a.754a 40.242.9.201    C7/0/0/U0     online            6     0.00   814    0   N
5039.558a.754e 40.242.9.207    C7/0/0/U0     online            7     0.00   814    0   N
5039.558a.6b98 40.242.0.16     C7/0/0/U0     online            8     0.00   817    0   N
0025.2e34.4380 40.242.62.172   C7/0/1/U1     online            2     0.00   783    0   N

Router# show cable rpd  
Load for five secs: 8%/3%; one minute: 9%; five minutes: 9%
No time source, *16:06:55.706 CST Thu Mar 2 2017

MAC Address     IP Address       I/F       State        Role HA  Name
0004.9f03.0214  120.105.4.7      Te7/1/0   online       Pri  Act rpd_b
000c.2923.9991  120.105.4.6      Te7/1/0   online       Pri  Act rpd_a
000c.2923.9991  120.105.4.6      Te6/1/0   online       Aux  Act rpd_a

Router# show cable modem rpd 0004.9f03.0214  
Load for five secs: 8%/3%; one minute: 9%; five minutes: 9%
No time source, *16:07:07.790 CST Thu Mar 2 2017
                                                                                       D
MAC Address    IP Address      I/F           MAC               Prim  RxPwr  Timing Num I
                                             State             Sid   (dBmv) Offset CPE P
5039.558a.6c1c 40.242.0.17     C7/0/0/U1     online            5     0.50   816    0   N
5039.558a.754a 40.242.9.201    C7/0/0/U0     online            6     0.00   814    0   N
5039.558a.754e 40.242.9.207    C7/0/0/U0     online            7     0.00   814    0   N

Verifying RPD Virtual Downstream Splitting Configuration on Node Side

To verify the RPD Downstream Virtual Splitting configuration on node side, complete the procedure on RPD as shown in the example below, and check if these criteria are met:

  • All L2TP session ID must be start with 800.

    RPD# show l2tp session  
L2TP Tunnel Information Total tunnels 1 sessions 13
LocSessID RemSessID LocTunID  RemTunID  State Type       Last Chg
80003d22  40103f21  9fef9255  53bc1f11  est   MCM        07:10:54 2016-11-13
80003d2a  40103f29  9fef9255  53bc1f11  est   MCM        07:10:57 2016-11-13
80003d42  40103f41  9fef9255  53bc1f11  est   MCM        07:10:56 2016-11-13
80003d32  40103f31  9fef9255  53bc1f11  est   MCM        07:10:59 2016-11-13
80003d3a  40103f39  9fef9255  53bc1f11  est   MCM        07:10:56 2016-11-13

  • All downstream DEPI SrcIP must be multicast IP that is the same as cBR-8 side.

    RPD# show downstream depi configuration  
Channel PwSubtype     SessionId  SrcIp
0       MCM           2147499298 225.225.225.0
8       MCM           2147499306 225.225.225.0
16      MCM           2147499314 225.225.225.0
24      MCM           2147499322 225.225.225.0
32      MCM           2147499330 225.225.225.0

Example: RPD Downstream Virtual Splitting Configuration

The following example shows how to configure RPD Downstream Virtual Splitting: 

Router# configure terminal
Router(config)# cable depi multicast pool 1
Router(config-multicast-pool)# ip address 225.225.225.0 255.255.255.0
Router(config-multicast-pool)# exit
Router(config)# cable downstream controller-profile 0
Router(config-controller-profile)# multicast-pool 1
Router(config-controller-profile)# max-carrier 128
Router(config-controller-profile)# base-channel-power 34
Router(config-controller-profile)# rf-chan 0 95
Router (config-prof-rf-chan)# type DOCSIS
Router (config-prof-rf-chan)# frequency 285000000
Router (config-prof-rf-chan)# rf-output NORMAL
Router (config-prof-rf-chan)# qam-profile 1
Router (config-prof-rf-chan)# power-adjust 0
Router (config-prof-rf-chan)# docsis-channel-id 1
Router (config-prof-rf-chan)# end
Router# configure terminal
Router(config)# cable rpd node_1
Router(config-rpd)# identifier 0004.9f03.0214
Router(config-rpd)# core-interface Te9/1/0
Router(config-rpd-core)# principal
Router(config-rpd-core)# rpd-ds 0 downstream-cable 9/0/0 profile 0
Router(config-rpd-core)# rpd-us 0 upstream-cable 9/0/0 profile 221
Router(config-rpd-core)# exit
Router(config-rpd)# r-dti 20
Router(config-rpd)# rpd-event profile 0
Router(config-rpd)# exit
Router(config)# cable rpd node_2
Router(config-rpd)# identifier 000c.2923.9991
Router(config-rpd)# core-interface Te9/1/0
Router(config-rpd-core)# principal
Router(config-rpd-core)# rpd-ds 0 downstream-cable 9/0/0 profile 0
Router(config-rpd-core)# rpd-us 0 upstream-cable 9/0/1 profile 221
Router(config-rpd-core)# exit
Router(config-rpd)# r-dti 20
Router(config-rpd)# rpd-event profile 0
Router(config-rpd)# exit
Router(config)# cable fiber-node 100
Router(config-fiber-node)# downstream Downstream-Cable 9/0/0
Router(config-fiber-node)# upstream Upstream-Cable 9/0/0
Router(config-fiber-node)# exit
Router(config)# cable fiber-node 101
Router(config-fiber-node)# downstream Downstream-Cable 9/0/0
Router(config-fiber-node)# upstream Upstream-Cable 9/0/1
Router(config-fiber-node)# exit
Router(config)# interface Cable 9/0/0
Router(config-if)# downstream Downstream-Cable 9/0/0 rf-channel 0
Router(config-if)# downstream Downstream-Cable 9/0/0 rf-channel 8
Router(config-if)# upstream 0 Upstream-Cable 9/0/0 us-channel 0
Router(config-if)# upstream 1 Upstream-Cable 9/0/0 us-channel 1
Router(config-if)# upstream 2 Upstream-Cable 9/0/0 us-channel 2
Router(config-if)# upstream 3 Upstream-Cable 9/0/0 us-channel 3
Router(config-if)# upstream 4 Upstream-Cable 9/0/1 us-channel 0
Router(config-if)# upstream 5 Upstream-Cable 9/0/1 us-channel 1
Router(config-if)# upstream 6 Upstream-Cable 9/0/1 us-channel 2
Router(config-if)# upstream 7 Upstream-Cable 9/0/1 us-channel 3
Router(config-if)# cable upstream 0 jumbo-grants
Router(config-if)# cable upstream balance-scheduling
Router(config-if)# cable upstream bonding-group 1
Router(config-upstream-bonding)# upstream 0
Router(config-upstream-bonding)# upstream 1
Router(config-upstream-bonding)# upstream 2
Router(config-upstream-bonding)# upstream 3
Router(config-upstream-bonding)# attributes 800000F0
Router(config-upstream-bonding)# exit
Router(config-if)# cable upstream bonding-group 2
Router(config-upstream-bonding)# upstream 4
Router(config-upstream-bonding)# upstream 5
Router(config-upstream-bonding)# upstream 6
Router(config-upstream-bonding)# upstream 7
Router(config-upstream-bonding)# attributes 8000000F
Router(config-upstream-bonding)# exit
Router(config-if)# cable bundle 1
Router(config-if)# cable map-advance static 1000
Router(config-if)# cable sid-cluster-group num-of-cluster 2
Router(config-if)# cable sid-cluster-switching max-request 2
Router(config-if)# exit
Router(config)# ip multicast-routing distributed
Router(config)# interface TenGigabitEthernet 9/1/0
Router(config-if)# ip address 192.168.3.1 255.255.255.0
Router(config-if)# end

Feature Information for RPD Downstream Virtual Splitting

The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.

Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Table 2. Feature Information for RPD Downstream Virtual Splitting

Feature Name

Releases

Feature Information

DS virtual splitting

Cisco 1x2 RPD Software 1.1

This feature was introduced on the Cisco cBR Series Converged Broadband Routers.