06-IP Multicast Configuration Examples

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H3C BIDIR-PIM Configuration Examples

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Software version: Release 7595

Document version: 6W100-20201031

 

Copyright © 2020 New H3C Technologies Co., Ltd. All rights reserved.

No part of this manual may be reproduced or transmitted in any form or by any means without prior written consent of New H3C Technologies Co., Ltd.

Except for the trademarks of New H3C Technologies Co., Ltd., any trademarks that may be mentioned in this document are the property of their respective owners.

The information in this document is subject to change without notice.



Introduction

This document introduces BIDIR-PIM configuration examples.

Prerequisites

This document is not restricted to specific software or hardware versions.

The configuration examples in this document were created and verified in a lab environment, and all the devices were started with the factory default configuration. When you are working on a live network, make sure you understand the potential impact of every command on your network.

This document assumes that you have basic knowledge of BIDIR-PIM.

Example: Configuring BIDIR-PIM

Network configuration

As shown in Figure 1:

·     Switch A, Switch B, and Switch C run OSPF.

·     Source 1 and Source 2 send multicast data to multicast group 225.1.1.1.

·     Host A and Host B are member hosts of multicast group 225.1.1.1.

Configure BIDIR-PIM on the switches to implement multicast forwarding.

Figure 1 Network diagram

 

Table 1 Interface and IP address assignment

Device

Interface

IP address

Device

Interface

IP address

Switch A

VLAN-interface 100

10.10.1.1/24

Switch C

VLAN-interface 102

10.102.1.1/24

Switch A

VLAN-interface 12

10.12.1.1/24

Switch C

VLAN-interface 13

10.13.1.3/24

Switch A

VLAN-interface 13

10.13.1.1/24

Switch C

VLAN-interface 23

10.23.1.3/24

Switch B

VLAN-interface 101

10.101.1.1/24

Switch C

VLAN-interface 33

10.33.1.3/24

Switch B

VLAN-interface 12

10.12.1.2/24

Source 1

10.10.1.2/24

Switch B

VLAN-interface 23

10.23.1.2/24

Source 2

10.33.1.4/24

 

Analysis

To meet the network requirements, perform the following tasks:

·     To establish the bidirectional RPT, configure VLAN-interface 12 on Switch A as a C-RP.

·     To use the BSR mechanism to dynamically elect the RP, configure VLAN-interface 12 on Switch A as a C-BSR.

·     To avoid multicast forwarding interruption when the RP fails, specify the unused IP address 10.13.1.4/24 as the static RP. In this way, the link on the subnet 10.13.1.0/24 becomes the RPL. Switch A and Switch C on the link function as the RPs.

Restrictions and guidelines

When you configure BIDIR-PIM, follow these restrictions and guidelines:

·     Enable the same PIM mode on the interfaces that belong to the same VPN instance on each switch.

·     Configure the same static RP on all the switches in the BIDIR-PIM domain.

·     Enable PIM-SM for all interfaces on the switches in the BIDIR-PIM domain.

·     Enable IGMP for the interfaces that connect to the stub networks on all the switches in the BIDIR-PIM domain.

Procedures

Configuring Switch A

1.     Enable IP multicast routing.

<SwitchA> system-view

[SwitchA] multicast routing

[SwitchA-mrib] quit

2.     Configure each interface and enable PIM-SM.

# Create VLAN 100, and assign Ten-GigabitEthernet 1/0/1 to this VLAN.

[SwitchA] vlan 100

[SwitchA-vlan100] port ten-gigabitethernet 1/0/1

[SwitchA-vlan100] quit

# Assign an IP address to VLAN-interface 100, and enable PIM-SM on the interface.

[SwitchA] interface vlan-interface 100

[SwitchA-Vlan-interface100] ip address 10.10.1.1 24

[SwitchA-Vlan-interface100] pim sm

[SwitchA-Vlan-interface100] quit

# Create VLAN 12, and assign Ten-GigabitEthernet 1/0/2 to the VLAN.

[SwitchA] vlan 12

[SwitchA-vlan12] port ten-gigabitethernet 1/0/2

[SwitchA-vlan12] quit

# Assign an IP address to VLAN-interface 12, and enable PIM-SM on the interface.

[SwitchA-vlan12] interface vlan-interface 12

[SwitchA-Vlan-interface12] ip address 10.12.1.1 24

[SwitchA-Vlan-interface12] pim sm

[SwitchA-Vlan-interface12] quit

# Create VLAN 13, and assign Ten-GigabitEthernet 1/0/3 to the VLAN.

[SwitchA] vlan 13

[SwitchA-vlan13] port ten-gigabitethernet 1/0/3

[SwitchA-vlan13] quit

# Assign an IP address to VLAN-interface 13, and enable PIM-SM on the interface.

[SwitchA] interface vlan-interface 13

[SwitchA-Vlan-interface13] ip address 10.13.1.1 24

[SwitchA-Vlan-interface13] pim sm

[SwitchA-Vlan-interface13] quit

3.     Configure a C-RP, a C-BSR, and the static RP.

# Configure VLAN-interface 12 as a C-BSR and a C-RP.

[SwitchA] pim

[SwitchA-pim] c-bsr 10.12.1.1

[SwitchA-pim] c-rp 10.12.1.1 bidir

# Specify the unused IP address 10.13.1.4 as the static RP.

[SwitchA-pim] static-rp 10.13.1.4 bidir

4.     Enable BIDIR-PIM.

[SwitchA-pim] bidir-pim enable

[SwitchA-pim] quit

5.     Configure OSPF.

[SwitchA] ospf 1

[SwitchA-ospf-1] import-route direct

[SwitchA-ospf-1] area 0

[SwitchA-ospf-1-area-0.0.0.0] network 10.0.0.0 0.255.255.255

[SwitchA-ospf-1-area-0.0.0.0] quit

[SwitchA-ospf-1] quit

Configuring Switch B

1.     Enable IP multicast routing.

<SwitchB> system-view

[SwitchB] multicast routing

[SwitchB-mrib] quit

2.     Configure each interface and enable PIM-SM.

# Create VLAN 12, and assign Ten-GigabitEthernet 1/0/2 to this VLAN.

[SwitchB] vlan 12

[SwitchB-vlan12] port ten-gigabitethernet 1/0/2

[SwitchB-vlan12] quit

# Assign an IP address to VLAN-interface 12, and enable PIM-SM on the interface.

[SwitchB] interface vlan-interface 12

[SwitchB-Vlan-interface12] ip address 10.12.1.2 24

[SwitchB-Vlan-interface12] pim sm

[SwitchB-Vlan-interface12] quit

# Create VLAN 23, and assign Ten-GigabitEthernet 1/0/3 to this VLAN.

[SwitchB] vlan 23

[SwitchB-vlan23] port ten-gigabitethernet 1/0/3

[SwitchB-vlan23] quit

# Assign an IP address to VLAN-interface 23, and enable PIM-SM on the interface.

[SwitchB] interface vlan-interface 23

[SwitchB-Vlan-interface23] ip address 10.23.1.2 24

[SwitchB-Vlan-interface23] pim sm

[SwitchB-Vlan-interface23] quit

# Create VLAN 101, and assign Ten-GigabitEthernet 1/0/1 to this VLAN.

[SwitchB] vlan 101

[SwitchB-vlan101] port ten-gigabitethernet 1/0/1

[SwitchB-vlan101] quit

# Assign an IP address to VLAN-interface 101, and enable PIM-SM and IGMP on the interface.

[SwitchB] interface vlan-interface 101

[SwitchB-Vlan-interface101] ip address 10.101.1.1 24

[SwitchB-Vlan-interface101] pim sm

[SwitchB-Vlan-interface101] igmp enable

[SwitchB-Vlan-interface101] quit

3.     Specify the unused IP address 10.13.1.4 as the static RP.

[SwitchB] pim

[SwitchB-pim] static-rp 10.13.1.4 bidir

4.     Enable BIDIR-PIM.

[SwitchB-pim] bidir-pim enable

[SwitchB-pim] quit

5.     Configure OSPF.

[SwitchB] ospf 1

[SwitchB-ospf-1] import-route direct

[SwitchB-ospf-1] area 0

[SwitchB-ospf-1-area-0.0.0.0] network 10.0.0.0 0.255.255.255

[SwitchB-ospf-1-area-0.0.0.0] quit

[SwitchB-ospf-1] quit

Configuring Switch C

1.     Enable IP multicast routing.

<SwitchC> system-view

[SwitchC] multicast routing

[SwitchC-mrib] quit

2.     Configure each interface and enable PIM-SM.

# Create VLAN 33, and assign Ten-GigabitEthernet 1/0/4 to this VLAN.

[SwitchC] vlan 33

[SwitchC-vlan33] port ten-gigabitethernet 1/0/4

[SwitchC-vlan33] quit

# Assign an IP address to VLAN-interface 33, and enable PIM-SM on the interface.

[SwitchC] interface vlan-interface 33

[SwitchC-Vlan-interface33] ip address 10.33.1.3 24

[SwitchC-Vlan-interface33] pim sm

[SwitchC-Vlan-interface33] quit

# Create VLAN 13, and assign Ten-GigabitEthernet 1/0/3 to this VLAN.

[SwitchC] vlan 13

[SwitchC-vlan13] port ten-gigabitethernet 1/0/3

[SwitchC-vlan13] quit

# Assign an IP address to VLAN-interface 13, and enable PIM-SM on the interface.

[SwitchC] interface vlan-interface 13

[SwitchC-Vlan-interface13] ip address 10.13.1.3 24

[SwitchC-Vlan-interface13] pim sm

[SwitchC-Vlan-interface13] quit

# Create VLAN 23, and assign Ten-GigabitEthernet 1/0/2 to this VLAN.

[SwitchC] vlan 23

[SwitchC-vlan23] port ten-gigabitethernet 1/0/2

[SwitchC-vlan23] quit

# Assign an IP address to VLAN-interface 23, and enable PIM-SM on the interface.

[SwitchC] interface vlan-interface 23

[SwitchC-Vlan-interface23] ip address 10.23.1.3 24

[SwitchC-Vlan-interface23] pim sm

[SwitchC-Vlan-interface23] quit

# Create VLAN 102, and assign Ten-GigabitEthernet 1/0/1 to this VLAN.

[SwitchC] vlan 102

[SwitchC-vlan102] port ten-gigabitethernet 1/0/1

[SwitchC-vlan102] quit

# Assign an IP address to VLAN-interface 102, and enable PIM-SM and IGMP on the interface.

[SwitchC] interface vlan-interface 102

[SwitchC-Vlan-interface102] ip address 10.102.1.1 24

[SwitchC-Vlan-interface102] pim sm

[SwitchC-Vlan-interface102] igmp enable

[SwitchC-Vlan-interface102] quit

3.     Specify the unused IP address 10.13.1.4 as the static RP.

[SwitchC] pim

[SwitchC-pim] static-rp 10.13.1.4 bidir

4.     Enable BIDIR-PIM.

[SwitchC-pim] bidir-pim enable

[SwitchC-pim] quit

5.     Configure OSPF.

[SwitchC] ospf 1

[SwitchC-ospf-1] import-route direct

[SwitchC-ospf-1] area 0

[SwitchC-ospf-1-area-0.0.0.0] network 10.0.0.0 0.255.255.255

[SwitchC-ospf-1-area-0.0.0.0] quit

[SwitchC-ospf-1] quit

Verifying the configuration

1.     Verify that Switch A, Switch B, and Switch C have established PIM neighbor relationships.

# Display PIM neighbor information on Switch A.

[SwitchA] display pim neighbor

 Total Number of Neighbors = 2

 

 Neighbor        Interface           Uptime   Expires  DR-Priority Mode

 10.12.1.2       Vlan12              00:02:27 00:01:45 1           B

 10.13.1.3       Vlan13              00:02:27 00:01:19 1           B

# Display PIM neighbor information on Switch B.

[SwitchB] display pim neighbor

 Total Number of Neighbors = 2

 

 Neighbor        Interface           Uptime   Expires  DR-Priority Mode

 10.12.1.1       Vlan12              00:03:05 00:01:44 1           B

 10.23.1.3       Vlan23              00:13:49 00:01:29 1           B

# Display PIM neighbor information on Switch C.

[SwitchC] display pim neighbor

 Total Number of Neighbors = 2

 

 Neighbor        Interface           Uptime   Expires  DR-Priority Mode

 10.13.1.1       Vlan13              00:03:28 00:01:39 1           B

 10.23.1.2       Vlan23              00:14:05 00:01:36 1           B

2.     Verify that VLAN-interface 12 on Switch A has been elected as the BSR on each switch.

# Display BSR information on Switch A.

[SwitchA] display pim bsr-info

 Scope: non-scoped

     State: Elected

     Bootstrap timer: 00:01:18

     Elected BSR address: 10.12.1.1

       Priority: 64

       Hash mask length: 30

       Uptime: 00:04:01

     Candidate BSR address: 10.12.1.1

       Priority: 64

       Hash mask length: 30

# Display BSR information on Switch B.

[SwitchB] display pim bsr-info

 Scope: non-scoped

     State: Accept Preferred

     Bootstrap timer: 00:00:26

     Elected BSR address: 10.12.1.1

       Priority: 64

       Hash mask length: 30

       Uptime: 00:10:41

# Display BSR information on Switch C.

[SwitchC] display pim bsr-info

 Scope: non-scoped

     State: Accept Preferred

     Bootstrap timer: 00:02:08

     Elected BSR address: 10.12.1.1

       Priority: 64

       Hash mask length: 30

       Uptime: 00:15:41

3.     Verify that VLAN-interface 12 on Switch A has been elected as the RP, and verify that the IP address of the static RP is 10.13.1.4 on each switch.

# Display RP information on Switch A.

[SwitchA] display pim rp-info

 BSR RP information:

   Scope: non-scoped

     Group/MaskLen: 224.0.0.0/4 [B]

       RP address               Priority  HoldTime  Uptime    Expires

       10.12.1.1 (local)        192       150       00:06:01  00:02:58

 

 Static RP information:

       RP address               ACL   Mode    Preferred

       10.13.1.4                ----  bidir   No

# Display RP information on Switch B.

[SwatchB] display pim rp-info

 BSR RP information:

   Scope: non-scoped

     Group/MaskLen: 224.0.0.0/4 [B]

       RP address               Priority  HoldTime  Uptime    Expires

       10.12.1.1                192       150       00:06:33  00:02:26

 

 Static RP information:

       RP address               ACL   Mode    Preferred

       10.13.1.4                ----  bidir   No

# Display RP information on Switch C.

[SwitchC] display pim rp-info

 BSR RP information:

   Scope: non-scoped

     Group/MaskLen: 224.0.0.0/4 [B]

       RP address               Priority  HoldTime  Uptime    Expires

       10.12.1.1                192       150       00:06:51  00:02:05

 

Static RP information:

       RP address               ACL   Mode    Preferred

       10.13.1.4                ----  bidir   No

4.     Verify that the DFs have been elected for BIDIR-PIM on each switch.

# Display information about DFs for BIDIR-PIM on Switch A.

[SwitchA] display pim df-info

RP address: 10.12.1.1

 Interface           State   DF-Pref    DF-Metric  DF-Uptime DF-Address

 Vlan100             Win     0          0          00:01:09  10.10.1.1 (local)

 Vlan12              -       -          -          -         -

 Vlan13              Win     0          0          00:01:10  10.13.1.1 (local)

 

RP address: 10.13.1.4

 Interface           State   DF-Pref    DF-Metric  DF-Uptime DF-Address

 Vlan100             Win     0          0          00:00:07  10.10.1.1 (local)

 Vlan12              Win     0          0          00:00:07  10.12.1.1 (local)

 Vlan13              -       -          -          -         -

# Display information about DFs for BIDIR-PIM on Switch B.

[SwatchB] display pim df-info

RP address: 10.12.1.1

 Interface           State   DF-Pref    DF-Metric  DF-Uptime DF-Address

 Vlan12              -       -          -          -         -

 Vlan23              Win     0          0          00:01:46  10.23.1.2 (local)

 Vlan101             Win     0          0          00:01:45  10.101.1.1 (local)

 

RP address: 10.13.1.4

 Interface           State   DF-Pref    DF-Metric  DF-Uptime DF-Address

 Vlan12              Lose    0          0          00:00:44  10.12.1.1

 Vlan23              Lose    0          0          00:00:53  10.23.1.3

 Vlan101             Win     10         2          00:00:53  10.101.1.1 (local)

# Display information about DFs for BIDIR-PIM on Switch C.

[SwitchC] display pim df-info

RP address: 10.12.1.1

 Interface           State   DF-Pref    DF-Metric  DF-Uptime DF-Address

 Vlan102             Win     10         2          00:02:07  10.102.1.1 (local)

 Vlan33              Win     10         2          00:02:06  10.33.1.3 (local)

 Vlan13              Lose    0          0          00:02:07  10.13.1.1

 Vlan23              Lose    0          0          00:02:07  10.23.1.2

 

RP address: 10.13.1.4

 Interface           State   DF-Pref    DF-Metric  DF-Uptime DF-Address

 Vlan102             Win     0          0          00:01:24  10.102.1.1 (local)

 Vlan33              Win     0          0          00:01:23  10.33.1.3 (local)

 Vlan13              -       -          -          -         -

 Vlan23              Win     0          0          00:01:24  10.23.1.3 (local)

5.     Verify that DFs for multicast forwarding are correct on each switch.

# Display information about DFs for multicast forwarding on Switch A.

[SwitchA] display multicast forwarding df-info

Total 2 RPs, 2 matched

 

00001. RP address: 10.12.1.1

     Flags: 0x0

     Uptime: 00:02:42

     RPF interface: Vlan-interface12

     List of 2 DF interfaces:

       1: Vlan-interface100

       2: Vlan-interface13

 

00002. RP address: 10.13.1.4

     Flags: 0x0

     Uptime: 00:01:41

     RPF interface: Vlan-interface13

     List of 2 DF interfaces:

       1: Vlan-interface100

       2: Vlan-interface12

# Display information about DFs for multicast forwarding on Switch B.

[SwitchB] display multicast forwarding df-info

Total 2 RPs, 2 matched

 

00001. RP address: 10.12.1.1

     Flags: 0x0

     Uptime: 00:03:18

     RPF interface: Vlan-interface12

     List of 2 DF interfaces:

       1: Vlan-interface23

       2: Vlan-interface101

 

00002. RP address: 10.13.1.4

     Flags: 0x0

     Uptime: 00:02:24

     RPF interface: Vlan-interface23

     List of 1 DF interfaces:

       1: Vlan-interface101

# Display information about DFs for multicast forwarding on Switch C.

[SwitchC] display multicast forwarding df-info

Total 2 RPs, 2 matched

 

00001. RP address: 10.12.1.1

     Flags: 0x0

     Uptime: 00:03:38

     RPF interface: Vlan-interface23

     List of 2 DF interfaces:

       1: Vlan-interface102

       2: Vlan-interface33

 

00002. RP address: 10.13.1.4

     Flags: 0x0

     Uptime: 00:02:41

     RPF interface: Vlan-interface13

     List of 3 DF interfaces:

       1: Vlan-interface33

       2: Vlan-interface23

       3: Vlan-interface102

6.     Send IGMP reports from Host A and Host B to join multicast group 225.1.1.1, and send multicast data from Source 1 and Source 2 to the group. (Details not shown.)

7.     Verify that PIM forwarding entries have been correctly established on each switch.

# Display information about PIM routing entries on Switch A.

[SwitchA] display pim routing-table

 Total 1 (*, G) entry; 0 (S, G) entry

 

 (*, 225.1.1.1)

     RP: 10.12.1.1 (local)

     Protocol: pim-bidir, Flag: WC LOC ACT

     UpTime: 00:21:59

     Upstream interface: Vlan-interface12

         Upstream neighbor: NULL

         RPF prime neighbor: NULL

     Downstream interface(s) information:

     Total number of downstreams: 1

         1: Vlan-interface12

             Protocol: pim-bidir, UpTime: 00:21:59, Expires: -

         2: Vlan-interface13

             Protocol: pim-bidir, UpTime: 00:03:26, Expires: -

# Display information about PIM routing entries on Switch B.

[SwitchB] display pim routing-table

 Total 1 (*, G) entry; 0 (S, G) entry

 

 (*, 225.1.1.1)

     RP: 10.12.1.1

     Protocol: pim-bidir, Flag: WC LOC ACT

     UpTime: 00:23:47

     Upstream interface: Vlan-interface12

         Upstream neighbor: NULL

         RPF prime neighbor: NULL

     Downstream interface(s) information:

     Total number of downstreams: 3

         1: Vlan-interface12

             Protocol: pim-bidir, UpTime: 00:23:47, Expires: -

         2: Vlan-interface23

             Protocol: pim-bidir, UpTime: 00:21:56, Expires: -

         3: Vlan-interface101

             Protocol: igmp, UpTime: 00:23:47, Expires: -

# Display information about PIM routing entries on Switch C.

[SwitchC] display pim routing-table

 Total 1 (*, G) entry; 0 (S, G) entry

 

 (*, 225.1.1.1)

     RP: 10.12.1.1

     Protocol: pim-bidir, Flag: WC ACT

     UpTime: 00:01:45

     Upstream interface: Vlan-interface23

         Upstream neighbor: 10.23.1.2

         RPF prime neighbor: 10.23.1.2

     Downstream interface(s) information:

     Total number of downstreams: 2

         1: Vlan-interface102

             Protocol: igmp, UpTime: 00:01:05, Expires: -

         2: Vlan-interface23

             Protocol: pim-bidir, UpTime: 00:00:53, Expires: -

Configuration files

·     Switch A:

#

ospf 1

 area 0.0.0.0

  network 10.0.0.0 0.255.255.255

#

vlan 12 to 13

#

vlan 100

#

interface Vlan-interface12

 ip address 10.12.1.1 255.255.255.0

 pim sm

#

interface Vlan-interface13

 ip address 10.13.1.1 255.255.255.0

 pim sm

#

interface Vlan-interface100

 ip address 10.10.1.1 255.255.255.0

 pim sm

#

interface Ten-GigabitEthernet1/0/1

 port link-mode bridge

 port access vlan 100

#

interface Ten-GigabitEthernet1/0/2

 port link-mode bridge

 port access vlan 12

#

interface Ten-GigabitEthernet1/0/3

 port link-mode bridge

 port access vlan 13

#

multicast routing

#

pim

 bidir-pim enable

 c-bsr 10.12.1.1

 c-rp 10.12.1.1 bidir

 static-rp 10.13.1.4 bidir

#

·     Switch B:

#

ospf 1

 area 0.0.0.0

  network 10.0.0.0 0.255.255.255

#

vlan 12

#

Vlan 23

#

vlan 101

#

interface Vlan-interface12

 ip address 10.12.1.2 255.255.255.0

 pim sm

#

interface Vlan-interface23

 ip address 10.23.1.2 255.255.255.0

 pim sm

#

interface Vlan-interface101

 ip address 10.101.1.1 255.255.255.0

 pim sm

 igmp enable

#

interface Ten-GigabitEthernet1/0/1

 port link-mode bridge

 port access vlan 101

#

interface Ten-GigabitEthernet1/0/2

 port link-mode bridge

 port access vlan 12

#

interface Ten-GigabitEthernet1/0/3

 port link-mode bridge

 port access vlan 23

#

multicast routing

#

pim

 bidir-pim enable

 static-rp 10.13.1.4 bidir

#

·     Switch C:

#

ospf 1

 area 0.0.0.0

  network 10.0.0.0 0.255.255.255

#

vlan 13

#

vlan 23

#

vlan 33

#

vlan 102

#

interface Vlan-interface13

 ip address 10.13.1.3 255.255.255.0

 pim sm

#

interface Vlan-interface23

 ip address 10.23.1.3 255.255.255.0

 pim sm

#

interface Vlan-interface33

 ip address 10.33.1.3 255.255.255.0

 pim sm

#

interface Vlan-interface102

 ip address 10.102.1.1 255.255.255.0

 pim sm

 igmp enable

#

interface Ten-GigabitEthernet1/0/1

 port link-mode bridge

 port access vlan 102

#

interface Ten-GigabitEthernet1/0/2

 port link-mode bridge

 port access vlan 23

#

interface Ten-GigabitEthernet1/0/3

 port link-mode bridge

 port access vlan 13

#

interface Ten-GigabitEthernet1/0/4

 port link-mode bridge

 port access vlan 33

#

multicast routing

#

pim

 bidir-pim enable

 static-rp 10.13.1.4 bidir

#

Related documentation

·     H3C S7500X Switch Series IP Multicast Command Reference-R759X

·     H3C S7500X Switch Series IP Multicast Configuration Guide-R759X