Rapid Ring Protection Protocol (RRPP)

RRPP Rapid Ring Protection Protocol Mr TOP Sovandy NOC Engineer

EZECOM

Agenda

u  Overview of RRPP

u  Comparing of RRPP with other Ethernet ring technologies

u  RRPP Features

u  Brief RRPP Topologies Sample

u  Configuration sample of Single RRPP Ring

u  Configuration Sample of Single RRPP Ring Multiple instances

I. Overview of RRPP

u  RRPP is Huawei proprietary link layer protocol used for applying to Ethernet rings. RRPP can prevent broadcast storms caused by data loops on a complete Ethernet ring. When a link on the Ethernet ring fails, nodes on the ring can restores communication immediately through the backup link with fast convergence time.

u  There are some kinds of RRPP Rings topologies

u  Single RRPP Ring

u  Cross RRPP Ring

u  Tangent RRPP Ring

u  Single RRPP Ring with Multiple instances

u  Tangent RRPP Ring with Multiple instance

u  Cross RRPP Ring with Multiple instance

Network Diagram of a Single RRPP Ring

II. Comparing with other Ethernet ring technologies, RRPP has the following features:

u  Convergence time is not related to the number of nodes on the ring network. Thus, RRPP can be applied to a large-scale network.

u  The topology convergence time is less than 50 ms. The service interruption time on the RRPP ring is less than 200 ms

u  RRPP can prevent the data loop from causing broadcast storm when the Ethernet ring network is complete.

u  RRPP, RSTP and MSTP are generally adopted to address the layer 2 network loop. But RSTP/MSTP is highly adaptable and the convergence time is measure in seconds.

III. RRPP Features u  RRPP Functions and Elements

- RRPP Domain

An RRPP domain consists of a group of interconnected switches with the same domain ID and control VLAN ID. An RRPP domain consists of the elements such as RRPP major ring and sub ring, control VLAN, master node, transit node, primary port and secondary port. An RRPP domain is identified by its ID, which is an integer.

- RRPP Ring Physically, an RRPP ring corresponds to an Ethernet ring. An

RRPP ring is a path of its RRPP domain. An RRPP domain consist of one RRPP ring or multiple crossed RRPP rings.

- RRPP major ring and sub ring

If an RRPP domain consists of multiple crossed RRPP rings, we can configure one ring as the major ring and other rings as subrings by setting their levels. An RRPP domain has only one major ring. Protocol packets of sub rings are transmitted in the major ring as data packets, and protocol packets of the major ring are transmitted only in the major ring.

II. RRPP Features u  RRPP Functions and Elements

- Control VLAN A VLAN that transmits RRPP protocol packets in an RRPP domain is

called a control VLAN. A control VLAN can contain only RRPP ports. An RRPP domain is configured with two control VLANs. The primary control VLAN and the sub control VLAN. We need to specify only the primary control VLAN. The VLAN whose ID is one more than the ID of the primary control VLAN becomes the sub control VLAN. Different from a control VLAN, a data VLAN is used to transmit data packets. The data VLAN can contain both the RRPP ports and non-RRPP ports.

- Master node On an RRPP ring, each switch is called a nodes. Each RRPP ring must

have only one master node.

- Transit node On an RRPP ring, all nodes except the master node are transit

nodes. A transit node monitors the status of its directly connected RRPP links. When the link status changes, the transit node informs the master nodes. The master nodes then determines the policy for reacting to the change of the link status.

II. RRPP Features u  RRPP Functions and Elements

- Edge node and Assistant edge node An edge node or assistant edge node is configured on a sub

ring in the RRPP cross Ring. It functions as a transit node on the major ring. On a sub ring, either of the two nodes that are on the crossed points of the major ring and sub ring can be configured as the edge node or one is edge node and other one is assistant edge node.

- Primary Interface and secondary interface On the master node and transit nodes, we can configure one

of the two interface connected to the Ethernet ring as the primary interface and the other as the secondary interface.

- Common interface and edge interface On an edge node or an assistant edge node, the interface

share by the sub ring and the major ring is called the common interface. An interface located only on a sub ring is called a edge interface.

u  RRPP Functions and elements - RRPP Multi-Instance

In the RRPP networking, one RRPP ring contains only one master node. When the master node is in complete state, the blocked secondary interface rejects all the data packets. In the manner, all the data packets are transmitted through the same path on the RRPP ring. The link of the secondary interface on the master node is idle, which wastes bandwidth. The RRPP multi-instance feature is implemented base domains. In the RRPP multi-instance networking, multiple domains can be configured on an RRPP ring.

Each domain contains one or more instance, and each instance represents a VLAN range. The VLANs in a domain are protected VLANs in the RRPP domain. A protected VLAN can be a data VLAN. The control VLAN on the major ring, or the control VLAN on a subring in the RRPP domain.

In the RRPP multi-instance networking, a ring can contain multiple master nodes, Load balancing and link backup can be implemented based on the blocking state of the secondary interface on the master node.

II. RRPP Features

III. Brief RRPP Topologies Sample

Single RRPP ring with multiple instances


Crossed RRPP rings with multiple instances`


CE1, UPE B, and UPE C form two subrings: ring 2 in domain 1 and ring 2 in domain 2. CE1 is connected to the major rings through Eth 0/0/3 of UPE B and Eth 0/0/3 of UPE C. UPE B is an edge node, and UPE is an assistant edge node. CE2, UPE B, and UPE C form two subrings: ring 3 in domain 1 and ring 3 in domain 2. CE2 is connected to the major rings through Eth 0/0/4 of UPE B and Eth 0/0/4 of UPE C. UPE B is an edge node, and UPE is an assistant edge node. VLANs 100 to 300 are configured on CE. Domain 1 and domain 2 share the traffic of packets from VLANs 100 to 300. Packets from VLANs 100 to 200 are transmitted through domain 1, and packets from VLANs 201 to 300 are transmitted through domain 2.

Crossed RRPP rings with multiple instances


Ring ID Master Node Primary Port Secondary Port Ring Type

Ring 1 Domain 1 PE-‐AGG Eth 0/0/1 Eth 0/0/2 Major ring

Ring 2 Domain 1 CE1 Eth 0/0/1 Eth 0/0/2 sub ring


Ring 1 Domain 2 PE-‐AGG Eth 0/0/2 Eth 0/0/1 Major ring



Ring ID Edge Node Common Port Edge Port Assistant Edge Node Common Port Edge Port

Ring2 Domain 1 UPE B Eth0/0/1 Eth0/0/3 UPE C Eth 0/0/2 Eth 0/0/3

Ring 3 Domain 1 UPE B Eth0/0/1 Eth0/0/4 UPE C Eth 0/0/2 Eth0/0/4

Ring2 Domain 2 UPE B Eth0/0/1 Eth0/0/3 UPE C Eth 0/0/2 Eth 0/0/3

Ring 3 Domain 2 UPE B Eth0/0/1 Eth0/0/4 UPE C Eth 0/0/2 Eth0/0/4

Edge nodes, Assistant Edge nodes, Common port, and Edge port of the subrings

Mapping between protected VLANs and instances

Master nodes, and primary and secondary ports on the master nodes

Crossed RRPP rings with multiple instances

Tangent RRPP rings with multiple instances


UPE A, UPE B, UPE C, and UPE D form two multi-instance rings: ring 1 in domain 1 and ring 1 in domain 2. UPE D, UPE E, UPE F, and UPE G form ring 1 in domain 3. Packets of the data VLANs connected to CE are forwarded to the backbone network through the two tangent rings. The tangent point of the two rings is UPE D. VLANs 100 to 300 are configured on CE. Domain 1 and domain 2 share the traffic of packets from VLANs 100 to 300. Packets from VLANs 100 to 200 are transmitted through domain 1, and packets from VLANs 201 to 300 are transmitted through domain 2.



Mapping between protected VLANs and instances




Networking Requirements

Switch A, Switch B, and Switch C support the RRPP function. Switch A, Switch B, and Switch C are on ring 1 of RRPP domain 1. The data of VLANs 100 and 300 needs to be protected. Network Diagram of a Single RRPP Ring

VI. Configuration sample of Single RRPP Ring with Multiple instances

Configuration Roadmap The configuration roadmap is as follows: 1. Map instance 1 to VLANs 100 and 200. 2. Locate Switch A, Switch B, and Switch C on ring 1 of RRPP domain 1. 3. Configure Switch A as the master node on ring 1, and configure Switch B and Switch C as transit nodes on ring 1.

Data Preparation

To complete the configuration, we need the following data: - Numbers of the RRPP interfaces - Control VLAN ID of ring 1

IV. Configuration sample of Single RRPP Ring

Procedure Step 1 Map instance 1 to VLANs 100 and 200. [Switch-A]stp region-configuration [Switch-A-mst-region]instance 1 vlan 10 11 100 200 [Switch-A-mst-region]active region-configuration

The configurations of Switch B and Switch C are similar to the configuration of Switch A. The detailed configurations are omitted here.

V. Configuration sample of Single RRPP Ring

Step 2 Create an RRPP domain and the control VLAN. # On the master node of ring 1, namely Switch -A, create RRPP domain 1 and c configure VLAN 10 as the main control VLAN.

[Switch-A]rrpp domain 1 [Switch-A-rrpp-domain-region1]control-vlan 10

# On the transit node of ring 1, namely Switch B, create RRPP domain 1 and configure VLAN 10 as the main control VLAN. [Switch-B] rrpp domain 1 [Switch-B-rrpp-domain-region1] control-vlan 10

# On the master node of ring 1, namely SwitchC, create RRPP domain 1 and configure VLAN 10 as the main control VLAN. [Switch-C] rrpp domain 1 [Switch-C-rrpp-domain-region1] control-vlan 10

Procedure Step 3 Configure the interfaces to be added to the RRPP ring as trunk interfaces, allow VLANs 100 and 200 on the interfaces, and disable STP on the interfaces.

# Configure Switch A.

[Switch-A]interface gi0/0/1 [Switch-A-GigabitEthernet0/0/1]port link-type trunk [Switch-A-GigabitEthernet0/0/1]port tru all vla 100 200 [Switch-A-GigabitEthernet0/0/1]stp disable [Switch-A]interface gi0/0/2 [Switch-A-GigabitEthernet0/0/2]port link-type trunk [Switch-A-GigabitEthernet0/0/2]port trunk allow-pass vlan 100 200 [Switch-A-GigabitEthernet0/0/2]stp disable


Note: The configurations on interfaces of Switch B and switch C are the same to the configuration of Switch A. The detailed configurations are omitted.

Procedure Step 4 Configure a protection VLAN and create the RRPP ring and enable RRPP. # Configure the protection VLAN on Switch A and configure Switch A as the master node of RRPP ring 1 and specify the primary interface and secondary interface.

[Switch-A]rrpp domain 1 [Switch-A-rrpp-domain-region1]protected-vlan reference-instance 1 [Switch-A-rrpp-domain-region1]ring 1 node-mode master primary-port gi0/0/1 secondary-port gi0/0/2 level 0 [Switch-A]rrpp enable


Procedure Step 4 Configure a protection VLAN and create the RRPP ring and enable RRPP. # Configure the protection VLAN on Switch B and configure Switch B as the transit node of RRPP ring 1 and specify the primary interface and secondary interface.

[Switch-B]rrpp domain 1 [Switch-B-rrpp-domain-region1]protected-vlan reference-instance 1 [Switch-B-rrpp-domain-region1]ring 1 node-mode transit primary-port gi0/0/1 secondary-port gi0/0/2 level 0 [Switch-B-rrpp-domain-region1]ring 1 enable [Switch-B]rrpp enable

# Configure the protection VLAN on Switch C and configure Switch C as the transit node of RRPP ring 1 and specify the primary interface and secondary interface.

[Switch-C]rrpp domain 1 [Switch-C-rrpp-domain-region1]protected-vlan reference-instance 1 [Switch-C-rrpp-domain-region1]ring 1 node-mode transit primary-port gi0/0/1 secondary-port gi0/0/2 level 0 [Switch-C-rrpp-domain-region1]ring 1 enable [Switch-C]rrpp enable


Step 6 Verify the configuration.

After the configurations are completed and network become stable, run the following commands

to verify the configuration. Run the display rrpp brief command on Switch-A. The following information is displayed:

[Switch-A]dis rrpp brief Abbreviations for Switch Node Mode : M - Master , T - Transit , E - Edge , A - Assistant-Edge RRPP Protocol Status: Enable RRPP Working Mode: HW RRPP Linkup Delay Timer: 0 sec (0 sec default) Number of RRPP Domains: 1 Domain Index : 1 Control VLAN : major 10 sub 11 Protected VLAN : Reference Instance 1 Hello Timer : 1 sec(default is 1 sec) Fail Timer : 6 sec(default is 6 sec) Ring Ring Node Primary/Common Secondary/Edge Is ID Level Mode Port Port Enabled ---------------------------------------------------------------------------- 1 0 M GigabitEthernet0/0/1 GigabitEthernet0/0/2 Yes



After the configurations are completed and network become stable, run the following commands

to verify the configuration. Run the display rrpp verbose domain 1 command on Switch-A.

The detail information about RRPP domain 1 is displayed as followed:

[Switch-A]dis rrpp verbose domain 1 Domain Index : 1 Control VLAN : major 10 sub 11 Protected VLAN : Reference Instance 1 Hello Timer : 1 sec(default is 1 sec) Fail Timer : 6 sec(default is 6 sec) RRPP Ring : 1 Ring Level : 0 Node Mode : Master Ring State : Complete Is Enabled : Enable Is Active: Yes Primary port : GigabitEthernet0/0/1 Port status: UP Secondary port : GigabitEthernet0/0/2 Port status: BLOCKED


Networking Requirements

Two rings are involved in the networking, ring 1 in domain 1 and ring 1 in domain 2. VLANs 100 to 400 are configured for clients. Domain 1 and domain 2 share the traffic of packets from VLANs 100 to 400. Packets from VLANs 100 to 250 are transmitted through domain 1, and packets from VLANs 251 to 400 are transmitted through domain 2. Mapping between protected VLANs and instances


Ring ID Control VLAN ID Instance ID of Control VLAN Data VLAN ID Instance ID of Data VLAN

Domain 1 VLAN 2 and 3 Instance 1 100 to 250 Instance 1

Domain 2 VLAN 4 and 5 Instance 2 251 to 400 Instance 2


Ring ID Master node Primary port Secondary port

Ring 1 domain 1 Switch A Eth0/0/1 Eth0/0/2

Ring 2 domain 1 Switch A Eth0/0/2 Eth0/0/1

VI. Configuration sample of Single RRPP Ring with Multiple instances Networking Diagram of Single RRPP Ring with Multiple instance

Configuration Roadmap

The configuration roadmap is as follows: 1. Map instance 1 to VLANs 100 to 250. Map instance 2 to VLANs 251 to 400. 2. Add Switch A, Switch B, Switch C, and Switch D to ring 1 in domain 1. 3. Add Switch A, Switch B, Switch C, and Switch D to ring 2 in domain 2. 4. Configure protected VLANs in domain 1 and domain 2. 5. Configure control VLANs in domain 1 and domain 2. 6. Configure Switch A as the master node on ring 1 in domain 1 and configure Switch B, Switch C and Switch D as transit nodes. 7. Configure Switch A as the master node on ring 2 in domain 2 and configure Switch B, Switch C and Switch D as transit nodes

Data Preparation To complete the configuration, you need the following data: - Instance IDs - Range of the protected VLANs - IDs of the control VLANs - Numbers of the RRPP interfaces


Procedure Step 1 Create VLAN and instances.

#Create VLAN on Switch A, B, C and D <SwitchA>system-view [SwitchA]vlan batch 100 to 400 # Create instance 1 and map it to control VLANs VLAN 2 VLAN 3 and data VLANs 100 to 250 in domain 1. [SwitchA]stp region-configuration [SwitchA-mst-region]instance 1 vlan 2 3 100 to 250 [SwitchA-mst-region]active region-configuration

# Create instance 2 and map it to control VLANs VLAN 4 VLAN 5 and data VLANs 251 to 400 in domain 2.

[SwitchA]stp region-configuration [SwitchA-mst-region]instance 2 vlan 4 5 251 to 400 [SwitchA-mst-region]active region-configuration.

Note: The configurations of Switch B, Switch C and switch D are the same to the configuration of Switch A. The detailed configurations are omitted.


# Verify the configuration Run the display stp region-configuration command on the devices to view the mapping between instance and VLANs. The displayed information on Switch A is as follows:

[SwitchA]dis stp region-configuration Oper configuration Format selector :0 Region name :4c1fccd111de Revision level :0 Instance VLANs Mapped 0 1, 6 to 99, 401 to 4094 1 2 to 3, 100 to 250 2 4 to 5, 251 to 400



Step 2 Create an RRPP domain and configure the protected VLAN the control VLAN.

# Configure the VLANs mapping instance 1 as the protected VLANs in domain 1. Configure VLAN 2 as the control VLAN. [SwitchA]rrpp domain 1

[SwitchA-rrpp-domain-region1]protected-vlan reference-instance 1 [SwitchA-rrpp-domain-region1]control-vlan 2

# Configure the VLANs mapping instance 2 as the protected VLANs in domain 2. Configure VLAN 4 as the control VLAN.

[SwitchA]rrpp domain 2 [SwitchA-rrpp-domain-region2]protected-vlan reference-instance 2 [SwitchA-rrpp-domain-region2]control-vlan 4

Note: The configurations of Switch B, Switch C and switch D are the same to the configuration of Switch A. The detailed configurations are omitted.

Step 3 Create RRPP Rings. - Configure Switch A # Configure Switch A as the master node of ring 1 in domain 1. Configure Eth 0/0/1 as the primary port and Eth 0/0/2 as the secondary port.

[SwitchA]rrpp domain 1 [SwitchA-rrpp-domain-region1]ring 1 node-mode master primary-port Ethernet 0/0/1 secondary-port Ethernet 0/0/2 level 0 [SwitchA-rrpp-domain-region1]ring 1 enable

# Configure Switch A as the master node of ring 2 in domain 2. Configure Eth 0/0/1 as the primary port and Eth 0/0/2 as the secondary port.

[SwitchA]rrpp domain 2 [SwitchA-rrpp-domain-region2]ring 2 node-mode master primary-port Ethernet 0/0/2 secondary-port Ethernet 0/0/1 level 0 [SwitchA-rrpp-domain-region2]ring 2 enable

# Enable RRPP protocol After configuring an RRPP ring, you need to enable RRPP on each node on the ring to activate the RRPP ring. [SwitchA]rrpp enable


Step 3 Create RRPP Rings. - Configure on Switch B, Switch C and Switch D

# Configure Switch B, Switch C and Switch D as the transit node of ring 1 in domain 1 and specify the primary and secondary port.

[SwitchB]rrpp domain 1 [SwitchB-rrpp-domain-region1]ring 1 node-mode transit primary-port Ethernet 0/0/1 secondary-port Ethernet 0/0/2 level 0 [SwitchB-rrpp-domain-region1]ring 1 enable

# Configure Switch B, Switch C and Switch D as the transit node of ring 2 in domain 2 and specify the primary and secondary port.

[SwitchB]rrpp domain 2 [SwitchB-rrpp-domain-region2]ring 2 node-mode transit primary-port Ethernet 0/0/1 secondary-port Ethernet 0/0/2 level 0 [SwitchB-rrpp-domain-region1]ring 2 enable

# Enable RRPP protocol After configuring an RRPP ring, you need to enable RRPP on each node on the ring to activate the RRPP ring. [SwitchB]rrpp enable

Note: The configurations of Switch C and switch D are the same to the configuration of Switch B. The detailed configurations are omitted.



After the configurations are completed and network become stable, run the following commands to verify the configuration. Run the display rrpp brief command on Switch-A. The following information is displayed:

SwitchA]dis rrpp brief Abbreviations for Switch Node Mode : M - Master , T - Transit , E - Edge , A - Assistant-Edge RRPP Protocol Status: Enable RRPP Working Mode: HW RRPP Linkup Delay Timer: 0 sec (0 sec default) Number of RRPP Domains: 2 Domain Index : 1 Control VLAN : major 2 sub 3 Protected VLAN : Reference Instance 1 Hello Timer : 1 sec(default is 1 sec) Fail Timer : 6 sec(default is 6 sec) Ring Ring Node Primary/Common Secondary/Edge Is ID Level Mode Port Port Enabled ---------------------------------------------------------------------------- 1 0 M Ethernet0/0/1 Ethernet0/0/2 Yes Domain Index : 2 Control VLAN : major 4 sub 5 Protected VLAN : Reference Instance 2 Hello Timer : 1 sec(default is 1 sec) Fail Timer : 6 sec(default is 6 sec) Ring Ring Node Primary/Common Secondary/Edge Is ID Level Mode Port Port Enabled

---------------------------------------------------------------------------- 2 0 M Ethernet0/0/2 Ethernet0/0/1 Yes


After the configurations are completed and network become stable, run the following commands to verify the configuration. Run the display rrpp verbose domain 1 command on Switch-A. The detail information about RRPP domain 1 is displayed as followed:

[SwitchA]dis rrpp verbose Domain Index : 1 Control VLAN : major 2 sub 3 Protected VLAN : Reference Instance 1 Hello Timer : 1 sec(default is 1 sec) Fail Timer : 6 sec(default is 6 sec) RRPP Ring : 1 Ring Level : 0 Node Mode : Master Ring State : Complete Is Enabled : Enable Is Active: Yes Primary port : Ethernet0/0/1 Port status: UP Secondary port : Ethernet0/0/2 Port status: BLOCKED Domain Index : 2 Control VLAN : major 4 sub 5 Protected VLAN : Reference Instance 2 Hello Timer : 1 sec(default is 1 sec) Fail Timer : 6 sec(default is 6 sec) RRPP Ring : 2 Ring Level : 0 Node Mode : Master Ring State : Complete Is Enabled : Enable Is Active: Yes Primary port : Ethernet0/0/2 Port status: UP Secondary port : Ethernet0/0/1 Port status: BLOCKED

Rapid Ring Protection Protocol (RRPP)

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