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27-BIDIR-PIM Configuration Examples


H3C S6860 Switch Series
BIDIR-PIM Configuration Examples

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.

Contents

Introduction· 1

Prerequisites· 1

Example: Configuring BIDIR-PIM·· 1

Network configuration· 1

Analysis· 2

Software versions used· 3

Restrictions and guidelines· 3

Procedures· 3

Configure Switch A· 3

Configure Switch B· 4

Configure Switch C·· 5

Verifying the configuration· 6

Configuration files· 12

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-int100	10.10.1.1/24	Switch C	Vlan-int102	10.102.1.1/24
Switch A	Vlan-int12	10.12.1.1/24	Switch C	Vlan-int13	10.13.1.3/24
Switch A	Vlan-int13	10.13.1.1/24	Switch C	Vlan-int23	10.23.1.3/24
Switch B	Vlan-int101	10.101.1.1/24	Switch C	Vlan-int33	10.33.1.3/24
Switch B	Vlan-int12	10.12.1.2/24	Source 1	—	10.10.1.2/24
Switch B	Vlan-int23	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.

Software versions used

This configuration example was created and verified on S6860-CMW710-R2612.

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

Configure Switch A

1. Enable IP multicast routing.

<SwitchA> system-view

System View: return to User View with Ctrl+Z.

[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, 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, 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 a 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

Configure Switch B

1. Enable IP multicast routing.

<SwitchB> system-view

System View: return to User View with Ctrl+Z.

[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, 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, 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, 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 a 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

Configure Switch C

1. Enable IP multicast routing.

<SwitchC> system-view

System View: return to User View with Ctrl+Z.

[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, 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, 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, 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, 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 a 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

H3C S6860 Switch Series Configuration Examples-Release 26xx-6W100

27-BIDIR-PIM Configuration Examples

Example: Configuring BIDIR-PIM

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