Cisco ASR 9000 Series Aggregation Services Router MPLS Configuration Guide, Release 5.1.x
Implementing GMPLS UNI
Downloads: This chapterpdf (PDF - 1.41MB) The complete bookPDF (PDF - 5.63MB) | Feedback

Implementing GMPLS UNI

Contents

Implementing GMPLS UNI

The Generalized Multiprotocol Label Switching (GMPLS) User Network Interface (UNI) creates a circuit connection between two clients (UNI-C) of an optical network. This connection is achieved by signaling exchanges between UNI Client (UNI-C) and UNI Network (UNI-N) nodes, where UNI-C nodes are router nodes and UNI-N nodes are optical nodes.

A GMPLS overlay model is required to connect packet routers with the optical network in these scenarios:
  • Different groups within a service provider are responsible for managing packet and optical networks.
  • The optical and packet network are managed by different service providers.
  • There is a weak trust model between the entities operating the optical and packet networks.

Feature History for Implementing GMPLS UNI

Release

Modification

Release 4.3.0

This feature was introduced.

Prerequisites for Implementing GMPLS UNI

The following prerequisites are required to implement GMPLS UNI:

  • You must be in a user group associated with a task group that includes the proper task IDs. The command reference guides include the task IDs required for each command. If you suspect user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
  • Router that runs Cisco IOS XR software.
  • Installation of the Cisco IOS XR software mini-image on the router.
  • Installation of the Cisco IOS XR MPLS software package on the router.

Restrictions for Implementing GMPLS UNI

  • The total number of configured GMPLS UNI controllers should not exceed the platform scale limit of 500 GMPLS interfaces.
  • Each UNI-N (ingress or egress) should be routable from its adjacent UNI-C. The UNI-C nodes need to be routable from the UNI-N nodes too.
  • GMPLS UNI is supported only over DWDM controllers and so, over POS and GigabitEthernet interfaces.
  • GMPLS UNI is supported only with these Cisco ASR 9000 Enhanced Ethernet Line Cards:
    • A9K-MOD80-SE : 80G Modular Line Card, Service Edge Optimized
    • A9K-MOD80-TR : 80G Modular Line Card, Packet Transport Optimized

Information About Implementing GMPLS UNI

To implement GMPLS UNI, you should understand these concepts:

GMPLS UNI vs GMPLS NNI

In case of GMPLS NNI, the optical network topology is known and path calculations are performed at the NNI head. In case of GMPLS UNI, the optical network topology is unknown to the UNI-C nodes and path calculations are performed by the UNI-N nodes.

GMPLS LSP Signaling

The GMPLS overlay model architecture is used for LSP signaling for GMPLS connections. In GMPLS UNI, UNI-C nodes send a request for a connection to UNI-N node. The connection request does not contain an end-to-end path. This is because, as mentioned previously, UNI-C nodes do not have knowledge of the topology of the optical network and therefore cannot determine the end-to-end path. The UNI-C node signals a connection request without an ERO.

The LSP diversity is signalled on a GMPLS UNI tunnel with a path-option. A path-option is permitted on a GMPLS UNI tunnel with a "no ERO" and an optional "XRO" attribute sets to specify LSP diversity requirements. If multiple LSP exclusions are configured in the attribute-set, they can be added to the path message along with an appropriate LSP connection diversity sub-object.

Path Message without an ERO

In GMPLS UNI, UNI-C nodes send a request for a connection to UNI-N node. The connection request does not contain an end-to-end path, because, UNI-C nodes do not have knowledge of the topology of the optical network and therefore cannot determine the end-to-end path. The UNI-C node signals a connection request without an ERO.

When no ERO is present in a received path message, the UNI-N node calculates a route to the destination and includes that route in an ERO, before forwarding the path message. If no route is found, the UNI-N returns a path error message with an error code and subcode of 24,5 - "No route available toward destination".

The destination address of a GMPLS LSP can be either the optical router-id of the tail UNI-C node, or the optical address of the ingress interface to the tail UNI-C node. Supplying the router-id allows the UNI-N to route the tunnel to the tail UNI-C node via any attached UNI-N node; supplying the UNI-C's ingress interface address forces the tunnel's path to traverse the UNI-N node attached to that interface.


Note


The optical router-ids and interface addresses may or may not be the same as the packet ones.


XRO Attribute-set

An optional XRO attribute-set can be specified as part of the path-option to specify LSP diversity requirements. An empty XRO attribute set results in the GMPLS tunnel being signaled with no exclusions, and therefore no XRO.


Note


A non-existent XRO attribute-set can be configured in the GMPLS UNI tunnel path-option; in this case no attempt will be made to bring up the GMPLS tunnel until the configuration is complete.


Connection Diversity

Connection diversity is required to ensure that GMPLS tunnels can be established without sharing resources, thus, greatly reducing the probability of simultaneous connection failures. For example, an edge-node wishes to establish multiple LSPs towards the same destination edge-node, and these LSPs need to have few or no resources in common.

Connection diversity supports the establishment of a GMPLS LSP which is diverse from the path taken by an existing LSP. An XRO is added to the tunnel's path message with appropriate LSP diversity sub-objects or exclusions. A maximum of 20 connection diversity exclusions per XRO is supported.

DWDM Transponder Integration

A GMPLS UNI based solution preserves all the advantages of the integration of the DWDM transponder into the router blade. These advantages include:

  • improved CAPEX and OPEX models
  • component, space and power savings
  • improved IP availability through pro-active protection.

How to Implement GMPLS UNI

A new submode is introduced under the main TE submode to enable GMPLS UNI and to contain GMPLS UNI configuration.

To implement GMPLS UNI, follow these procedures:

Configuring TE for GMPLS UNI

TE configuration specific to packet tunnels does not affect GMPLS UNI tunnels.

To implement TE configuration for GMPLS UNI, follow these procedures:

Enabling GMPLS UNI Submode

Perform this task to enable GMPLS UNI configuration submode and to configure GMPLS UNI tunnels.


Note


Removal of the GMPLS UNI submode results in the removal of all configuration within it, including any other parser submode, and the immediate destruction of all GMPLS UNI tunnels.


SUMMARY STEPS

    1.    configure

    2.    mpls traffic-eng

    3.    gmpls optical-uni

    4.    Use the commit or end command.


DETAILED STEPS
     Command or ActionPurpose
    Step 1 configure


    Example:
    RP/0/RSP0/CPU0:router# configure
     

    Enters global configuration mode.

     
    Step 2 mpls traffic-eng


    Example:
    RP/0/RSP0/CPU0:router(config)# mpls traffic-eng
    
    
     

    Enters MPLS-TE configuration mode.

     
    Step 3 gmpls optical-uni


    Example:
    RP/0/RSP0/CPU0:router(config-mpls-te)# gmpls optical-uni
    
    RP/0/RSP0/CPU0:router(config-te-gmpls)#
    
     

    Enters GMPLS UNI configuration submode.

     
    Step 4 Use the commit or end command.  

    commit—Saves the configuration changes and remains within the configuration session.

    end—Prompts user to take one of these actions:
    • Yes— Saves configuration changes and exits the configuration session.
    • No—Exits the configuration session without committing the configuration changes.
    • Cancel—Remains in the configuration mode, without committing the configuration changes.
     

    Configuring GMPLS UNI Controller

    Perform this task to setup a GMPLS tail in MPLS-TE configuration. This task enables GMPLS UNI controller submode to configure controllers for establishing GMPLS UNI tunnels. This is the minimal configuration required at the tunnel tail.


    Note


    Removal of the GMPLS UNI controller submode results in the immediate destruction of any GMPLS tunnel established over the controller referenced.


    SUMMARY STEPS

      1.    configure

      2.    mpls traffic-eng

      3.    gmpls optical-uni

      4.    controller dwdm interface

      5.    Use the commit or end command.


    DETAILED STEPS
       Command or ActionPurpose
      Step 1 configure


      Example:
      RP/0/RSP0/CPU0:router# configure
       

      Enters global configuration mode.

       
      Step 2 mpls traffic-eng


      Example:
      RP/0/RSP0/CPU0:router(config)# mpls traffic-eng
      
      
       

      Enters MPLS-TE configuration mode.

       
      Step 3 gmpls optical-uni


      Example:
      RP/0/RSP0/CPU0:router(config-mpls-te)# gmpls optical-uni
      
       

      Enters GMPLS UNI configuration submode.

       
      Step 4 controller dwdm interface


      Example:
      RP/0/RSP0/CPU0:router(config-te-gmpls)# controller dwdm 0/1/0/1
      
      RP/0/RSP0/CPU0:router(config-te-gmpls-cntl)#
      
       

      Enters GMPLS UNI controller submode.

       
      Step 5 Use the commit or end command.  

      commit—Saves the configuration changes and remains within the configuration session.

      end—Prompts user to take one of these actions:
      • Yes— Saves configuration changes and exits the configuration session.
      • No—Exits the configuration session without committing the configuration changes.
      • Cancel—Remains in the configuration mode, without committing the configuration changes.
       

      Configuring GMPLS UNI Controller as a Tunnel Head

      Perform this task to configure the tunnel properties for a GMPLS UNI controller.

      This configuration designates the controller as a tunnel-head, rather than a tunnel tail. After the tunnel properties are configured, the incoming path messages are rejected and any existing tail-end tunnel is torn down.

      SUMMARY STEPS

        1.    configure

        2.    mpls traffic-eng

        3.    gmpls optical-uni

        4.    controller dwdm interface

        5.    tunnel-properties

        6.    tunnel-id number

        7.    destination ipv4 unicast address

        8.    path-option 10 no-ero lockdown

        9.    Use the commit or end command.


      DETAILED STEPS
         Command or ActionPurpose
        Step 1 configure


        Example:
        RP/0/RSP0/CPU0:router# configure
         

        Enters global configuration mode.

         
        Step 2 mpls traffic-eng


        Example:
        RP/0/RSP0/CPU0:router(config)# mpls traffic-eng
        
        
         

        Enters MPLS-TE configuration mode.

         
        Step 3 gmpls optical-uni


        Example:
        RP/0/RSP0/CPU0:router(config-mpls-te)# gmpls optical-uni
        
         

        Enters GMPLS UNI configuration submode.

         
        Step 4 controller dwdm interface


        Example:
        RP/0/RSP0/CPU0:router(config-te-gmpls)# controller dwdm 0/1/0/1
        
        RP/0/RSP0/CPU0:router(config-te-gmpls-cntl)#
        
         

        Enters GMPLS UNI controller submode.

         
        Step 5 tunnel-properties


        Example:
        RP/0/RSP0/CPU0:router(config-te-gmpls-cntl)# tunnel-properties
        
        RP/0/RSP0/CPU0:router(config-te-gmpls-tun)#
        
         

        Enters the submode to configure tunnel-specific information for a GMPLS UNI controller.

         
        Step 6 tunnel-id number


        Example:
        RP/0/RSP0/CPU0:router(config-te-gmpls-tun)# tunnel-id 100
        
         

        Specifies a tunnel-id for a headend router of a GMPLS tunnel. The tunnel-id is a 16-bit number ranging from 0 to 65535.

         
        Step 7 destination ipv4 unicast address


        Example:
        RP/0/RSP0/CPU0:router(config-te-gmpls-tun)# destination ipv4 unicast 10.10.3.4
        
         

        Specifies a tunnel destination for a headend router of a GMPLS tunnel. The destination argument is an IPv4 address.

         
        Step 8 path-option 10 no-ero lockdown


        Example:
        RP/0/RSP0/CPU0:router(config-te-gmpls-tun)# path-option 10 no-ero lockdown
        
         

        Specifies the path-option for a headend router of a GMPLS tunnel.

        Note   

        An XRO attribute-set can be specified as part of the path-option, if required.

         
        Step 9 Use the commit or end command.  

        commit—Saves the configuration changes and remains within the configuration session.

        end—Prompts user to take one of these actions:
        • Yes— Saves configuration changes and exits the configuration session.
        • No—Exits the configuration session without committing the configuration changes.
        • Cancel—Remains in the configuration mode, without committing the configuration changes.
         

        Configuring Other Tunnel Properties for a GMPLS UNI Tunnel

        Perform this task to configure the optional tunnel properties for a GMPLS UNI tunnel. This configuration is optional, and if omitted, the GMPLS tunnel is established with the default property values.

        SUMMARY STEPS

          1.    configure

          2.    mpls traffic-eng

          3.    gmpls optical-uni

          4.    controller dwdm interface

          5.    tunnel-properties

          6.    priority setup-priority hold-priority

          7.    record-route

          8.    signalled-name name

          9.    logging events lsp-status state

          10.    Use the commit or end command.


        DETAILED STEPS
           Command or ActionPurpose
          Step 1 configure


          Example:
          RP/0/RSP0/CPU0:router# configure
           

          Enters global configuration mode.

           
          Step 2 mpls traffic-eng


          Example:
          RP/0/RSP0/CPU0:router(config)# mpls traffic-eng
          
          
           

          Enters MPLS-TE configuration mode.

           
          Step 3 gmpls optical-uni


          Example:
          RP/0/RSP0/CPU0:router(config-mpls-te)# gmpls optical-uni
          
           

          Enters GMPLS UNI configuration submode.

           
          Step 4 controller dwdm interface


          Example:
          RP/0/RSP0/CPU0:router(config-te-gmpls)# controller dwdm 0/1/0/1
          
           

          Enters GMPLS UNI controller submode.

           
          Step 5 tunnel-properties


          Example:
          RP/0/RSP0/CPU0:router(config-te-gmpls-cntl)# tunnel-properties
          
           

          Enters the submode to configure tunnel-specific information for a GMPLS UNI controller.

           
          Step 6 priority setup-priority hold-priority


          Example:
          RP/0/RSP0/CPU0:router(config-te-gmpls-tun)# priority 3 2
          
           

          Specifies the priority for a GMPLS tunnel. The default priority value is 7 for both setup and hold priorities.

          Note   

          The setup-priority and hold-priority values are numbers ranging from 0 to 7, where 0 represents the highest priority. The hold-priority must be equal or higher (numerically less) than the setup-priority.

           
          Step 7 record-route


          Example:
          RP/0/RSP0/CPU0:router(config-te-gmpls-tun)# record-route
          
           

          Enables record-route functionality for a GMPLS tunnel.

           
          Step 8 signalled-name name


          Example:
          RP/0/RSP0/CPU0:router(config-te-gmpls-tun)# signalled-name sign1
          
           

          Configures signalled-name for a GMPLS tunnel.

          Note   

          If no signalled name is configured, TE will generate a default name in the form of router-name_tunnel-id_destination-address, for example, te-ma1_123_10.10.10.10.

           
          Step 9 logging events lsp-status state


          Example:
          RP/0/RSP0/CPU0:router(config-te-gmpls-tun)# logging events lsp-status state
          
           

          Configure events to generate system log messages when state changes occur on the GMPLS tunnel. If omitted, no events will result in the generation of system log messages.

           
          Step 10 Use the commit or end command.  

          commit—Saves the configuration changes and remains within the configuration session.

          end—Prompts user to take one of these actions:
          • Yes— Saves configuration changes and exits the configuration session.
          • No—Exits the configuration session without committing the configuration changes.
          • Cancel—Remains in the configuration mode, without committing the configuration changes.
           

          Configuring LSP Diversity

          To configure an XRO attribute-set as part of the path-option for MPLS-TE, and to specify exclusions for an attribute set for LSP diversity, follow these procedures:

          Configuring XRO Attribute-set

          Perform this task to configure XRO attribute set in the GMPLS UNI tunnel path-option, under MPLS-TE submode.

          SUMMARY STEPS

            1.    configure

            2.    mpls traffic-eng

            3.    gmpls optical-uni

            4.    controller dwdm interface

            5.    tunnel-properties

            6.    path-option 10 no-ero [xro-attribute-set name ] lockdown

            7.    Use the commit or end command.


          DETAILED STEPS
             Command or ActionPurpose
            Step 1 configure


            Example:
            RP/0/RSP0/CPU0:router# configure
             

            Enters global configuration mode.

             
            Step 2 mpls traffic-eng


            Example:
            RP/0/RSP0/CPU0:router(config)# mpls traffic-eng
            
            
             

            Enters MPLS-TE configuration mode.

             
            Step 3 gmpls optical-uni


            Example:
            RP/0/RSP0/CPU0:router(config-mpls-te)# gmpls optical-uni
            
             

            Enters GMPLS UNI configuration submode.

             
            Step 4 controller dwdm interface


            Example:
            RP/0/RSP0/CPU0:router(config-te-gmpls)# controller dwdm 0/1/0/1
            
             

            Enters GMPLS UNI controller submode.

             
            Step 5 tunnel-properties


            Example:
            RP/0/RSP0/CPU0:router(config-te-gmpls-cntl)# tunnel-properties
            
             

            Enters the submode to configure tunnel-specific information for a GMPLS UNI controller.

             
            Step 6 path-option 10 no-ero [xro-attribute-set name ] lockdown


            Example:
            RP/0/RSP0/CPU0:router(config-te-gmpls-tun)# path-option 10 no-ero xro-attribute-set A01 lockdown
            
             

            Specifies the path-option for a headend router of a GMPLS tunnel.

             
            Step 7 Use the commit or end command.  

            commit—Saves the configuration changes and remains within the configuration session.

            end—Prompts user to take one of these actions:
            • Yes— Saves configuration changes and exits the configuration session.
            • No—Exits the configuration session without committing the configuration changes.
            • Cancel—Remains in the configuration mode, without committing the configuration changes.
             
            Configuring Connection Diversity

            Perform this task to specify exclusions for an attribute set for LSP diversity, under MPLS-TE attribute-set configuration mode.

            SUMMARY STEPS

              1.    configure

              2.    mpls traffic-eng

              3.    attribute-set xro name

              4.    exclude {best-effort | strict} lsp source source-address destination destination-address tunnel-id tunnel-id extended-tunnel-id extended-tunnel-id [lsp-id lsp-id]

              5.    Use the commit or end command.


            DETAILED STEPS
               Command or ActionPurpose
              Step 1 configure


              Example:
              RP/0/RSP0/CPU0:router# configure
               

              Enters global configuration mode.

               
              Step 2 mpls traffic-eng


              Example:
              RP/0/RSP0/CPU0:router(config)# mpls traffic-eng
              
              
               

              Enters MPLS-TE configuration mode.

               
              Step 3 attribute-set xro name


              Example:
              RP/0/RSP0/CPU0:router(config-mpls-te)# attribute-set xro attrset01
              
               

              Configures an XRO attribute-set for a GMPLS tunnel.

               
              Step 4 exclude {best-effort | strict} lsp source source-address destination destination-address tunnel-id tunnel-id extended-tunnel-id extended-tunnel-id [lsp-id lsp-id]

              Example:
              RP/0/RSP0/CPU0:router(config-te-attribute-set)# exclude best-effort lsp source 10.10.1.2 destination 10.20.4.4 tunnel-id 17 extended-tunnel-id 10.20.3.3 lsp-id 17
              RP/0/RSP0/CPU0:router(config-te-attribute-set)#
              
               

              Specifies exclusions for an attribute set for LSP diversity.

              Note   

              A maximum of 20 LSP exclusions per XRO is supported.

               
              Step 5 Use the commit or end command.  

              commit—Saves the configuration changes and remains within the configuration session.

              end—Prompts user to take one of these actions:
              • Yes— Saves configuration changes and exits the configuration session.
              • No—Exits the configuration session without committing the configuration changes.
              • Cancel—Remains in the configuration mode, without committing the configuration changes.
               

              Configuring LMP for GMPLS UNI

              To implement LMP configuration for GMPLS UNI, follow these procedures:

              Configuring Optical Router ID

              Perform this task to enable GMPLS UNI LMP functionality and to configure LMP unicast router ID.

              SUMMARY STEPS

                1.    configure

                2.    lmp

                3.    gmpls optical-uni

                4.    router-id ipv4 unicast address

                5.    Use the commit or end command.


              DETAILED STEPS
                 Command or ActionPurpose
                Step 1 configure


                Example:
                RP/0/RSP0/CPU0:router# configure
                 

                Enters global configuration mode.

                 
                Step 2 lmp


                Example:
                RP/0/RSP0/CPU0:router(config)# lmp
                
                 

                Enters LMP configuration mode.

                 
                Step 3 gmpls optical-uni


                Example:
                RP/0/RSP0/CPU0:router(config-lmp)# gmpls optical-uni
                
                
                 

                Enters GMPLS UNI configuration submode.

                 
                Step 4 router-id ipv4 unicast address


                Example:
                RP/0/RSP0/CPU0:router(config-lmp-gmpls-uni)# router-id ipv4 unicast 10.10.4.4
                
                
                 

                Configures the LMP unicast router ID for GMPLS.

                 
                Step 5 Use the commit or end command.  

                commit—Saves the configuration changes and remains within the configuration session.

                end—Prompts user to take one of these actions:
                • Yes— Saves configuration changes and exits the configuration session.
                • No—Exits the configuration session without committing the configuration changes.
                • Cancel—Remains in the configuration mode, without committing the configuration changes.
                 

                Configuring an LMP Neighbor

                Perform this task to configure an LMP neighbor for a GMPLS UNI tunnel.

                SUMMARY STEPS

                  1.    configure

                  2.    lmp

                  3.    gmpls optical-uni

                  4.    neighbor name

                  5.    ipcc routed

                  6.    router-id ipv4 unicast address

                  7.    Use the commit or end command.


                DETAILED STEPS
                   Command or ActionPurpose
                  Step 1 configure


                  Example:
                  RP/0/RSP0/CPU0:router# configure
                   

                  Enters global configuration mode.

                   
                  Step 2 lmp


                  Example:
                  RP/0/RSP0/CPU0:router(config)# lmp
                  
                   

                  Enters LMP configuration mode.

                   
                  Step 3 gmpls optical-uni


                  Example:
                  RP/0/RSP0/CPU0:router(config-lmp)# gmpls optical-uni
                  
                  
                   

                  Enters GMPLS UNI configuration submode.

                   
                  Step 4 neighbor name


                  Example:
                  RP/0/RSP0/CPU0:router(config-lmp-gmpls-uni)# neighbor nbr1
                  
                  
                   

                  Specifies an LMP neighbor for GMPLS and enters LMP GMPLS UNI neighbor configuration submode.

                   
                  Step 5 ipcc routed


                  Example:
                  RP/0/RSP0/CPU0:router(config-lmp-gmpls-uni-nbr-nbr1)# ipcc routed
                  
                  
                   

                  Specifies the LMP neighbor IPCC configuration for GMPLS UNI.

                   
                  Step 6 router-id ipv4 unicast address


                  Example:
                  RP/0/RSP0/CPU0:router(config-lmp-gmpls-uni-nbr-nbr1)# router-id ipv4 unicast 10.10.4.4
                  
                  
                   

                  Configures the LMP unicast router ID for GMPLS.

                   
                  Step 7 Use the commit or end command.  

                  commit—Saves the configuration changes and remains within the configuration session.

                  end—Prompts user to take one of these actions:
                  • Yes— Saves configuration changes and exits the configuration session.
                  • No—Exits the configuration session without committing the configuration changes.
                  • Cancel—Remains in the configuration mode, without committing the configuration changes.
                   

                  Configuring an LMP Controller

                  Perform this task to configure an LMP link for a GMPLS UNI controller.

                  SUMMARY STEPS

                    1.    configure

                    2.    lmp

                    3.    gmpls optical-uni

                    4.    controller dwdm controller

                    5.    neighbor name

                    6.    link-id ipv4 unicast address

                    7.    neighbor link-id ipv4 unicast address

                    8.    neighbor interface-id unnumbered interface-id

                    9.    Use the commit or end command.


                  DETAILED STEPS
                     Command or ActionPurpose
                    Step 1 configure


                    Example:
                    RP/0/RSP0/CPU0:router# configure
                     

                    Enters global configuration mode.

                     
                    Step 2 lmp


                    Example:
                    RP/0/RSP0/CPU0:router(config)# lmp
                    
                     

                    Enters LMP configuration mode.

                     
                    Step 3 gmpls optical-uni


                    Example:
                    RP/0/RSP0/CPU0:router(config-lmp)# gmpls optical-uni
                    
                    
                     

                    Enters GMPLS UNI configuration submode.

                     
                    Step 4 controller dwdm controller


                    Example:
                    RP/0/RSP0/CPU0:router(config-lmp-gmpls-uni)# controller dwdm 0/4/0/0
                    
                    
                     

                    Specifies a controller for GMPLS UNI.

                     
                    Step 5 neighbor name


                    Example:
                    RP/0/RSP0/CPU0:router(config-lmp-gmpls-uni-cntl)# neighbor nbr1
                    
                    
                     

                    Specifies an LMP neighbor for GMPLS and enters LMP GMPLS UNI neighbor configuration submode.

                     
                    Step 6 link-id ipv4 unicast address


                    Example:
                    RP/0/RSP0/CPU0:router(config-lmp-gmpls-uni-cntl)# link-id ipv4 unicast 10.2.2.4
                    
                    
                     

                    Specifies the optical interface address for an LMP link for a GMPLS UNI controller.

                     
                    Step 7 neighbor link-id ipv4 unicast address


                    Example:
                    RP/0/RSP0/CPU0:router(config-lmp-gmpls-uni-cntl)# neighbor link-id ipv4 unicast 10.10.4.4
                    
                    
                     

                    Specifies the neighbor's optical address of an LMP link for a GMPLS UNI controller.

                     
                    Step 8 neighbor interface-id unnumbered interface-id


                    Example:
                    RP/0/RSP0/CPU0:router(config-lmp-gmpls-uni-cntl)# neighbor interface-id unnumbered 17
                    
                    
                     

                    Specifies the neighbor's optical interface ID of an LMP link for a GMPLS UNI controller.

                     
                    Step 9 Use the commit or end command.  

                    commit—Saves the configuration changes and remains within the configuration session.

                    end—Prompts user to take one of these actions:
                    • Yes— Saves configuration changes and exits the configuration session.
                    • No—Exits the configuration session without committing the configuration changes.
                    • Cancel—Remains in the configuration mode, without committing the configuration changes.
                     

                    Configuring RSVP Optical Refresh Interval and Missed Count

                    Perform this task to configure optical refresh interval under the RSVP controller submode and to configure the number of missed refresh messages allowed before optical tunnel states are deleted.

                    SUMMARY STEPS

                      1.    configure

                      2.    rsvp

                      3.    controller dwdm interface

                      4.    signalling refresh out-of-band interval interval

                      5.    signalling refresh out-of-band missed miss-count

                      6.    Use the commit or end command.


                    DETAILED STEPS
                       Command or ActionPurpose
                      Step 1 configure


                      Example:
                      RP/0/RSP0/CPU0:router# configure
                       

                      Enters global configuration mode.

                       
                      Step 2 rsvp


                      Example:
                      RP/0/RSP0/CPU0:router(config)# rsvp
                      
                      
                       

                      Enters RSVP configuration mode.

                       
                      Step 3 controller dwdm interface


                      Example:
                      RP/0/RSP0/CPU0:router(config-rsvp)# controller dwdm 0/1/0/1
                      
                      
                       

                      Configures a controller for establishing a GMPLS UNI tunnel.

                       
                      Step 4 signalling refresh out-of-band interval interval


                      Example:
                      RP/0/RSP0/CPU0:router(config-rsvp-cntl)# signalling refresh out-of-band interval 200
                      
                      
                       

                      Configures optical refresh interval.

                      The interval argument is the interval (in seconds) at which refresh messages are sent and expected to be received. The range is 180 to 86400 (a refresh-interval of 1 day).

                       
                      Step 5 signalling refresh out-of-band missed miss-count


                      Example:
                      RP/0/RSP0/CPU0:router(config-rsvp-cntl)# signalling refresh out-of-band missed 30
                      
                      
                       

                      Configures number of missed refresh messages allowed before optical tunnel states are deleted.

                      The miss-count argument is the number of refresh messages, expected at the configured refresh-interval, which can be missed before optical tunnel states time out. The accepted range is 1 to 48. The default value is 12.

                       
                      Step 6 Use the commit or end command.  

                      commit—Saves the configuration changes and remains within the configuration session.

                      end—Prompts user to take one of these actions:
                      • Yes— Saves configuration changes and exits the configuration session.
                      • No—Exits the configuration session without committing the configuration changes.
                      • Cancel—Remains in the configuration mode, without committing the configuration changes.
                       

                      Configuration Examples for GMPLS UNI

                      These configuration examples are provided for GMPLS UNI:

                      Configuring Head UNI-C for a GMPLS Tunnel: Example

                      This example shows the minimal head UNI-C configuration require to establish a GMPLS tunnel:

                        rsvp
                        		controller dwdm 0/1/0/1
                          		signalling refresh out-of-band interval 3600
                          		signalling refresh out-of-band missed 24
                        		!
                      		!
                      		mpls traffic-eng
                        		gmpls optical-uni
                          		controller dwdm 0/1/0/1
                            		tunnel-properties
                              		tunnel-id 100
                              		destination 100.20.20.20
                              		path-option 10 no-ero
                            		!
                          		!
                        		!
                      		!
                      		lmp
                        		gmpls optical-uni
                          		router-id 100.11.11.11
                          		neighbor nbr_A
                            		ipcc routed
                            		neighbor router-id ipv4 unicast 100.12.12.12
                          		!
                          		controller dwdm 0/1/0/1
                            		neighbor nbr_A
                            		link-id ipv4 unicast 192.168.100.1
                            		neighbor link-id ipv4 unicast 192.168.100.2
                            		neighbor interface-id unnumbered 13
                          		!
                        		!
                      		!
                      
                        

                      Configuring Tail UNI-C for a GMPLS Tunnel: Example

                      This example shows the minimal tail UNI-C configuration require to establish a GMPLS tunnel:


                      Note


                      The controller must be specified under the GMPLS UNI submode to inform TE that incoming GMPLS path messages are to be accepted and processed.


                        rsvp
                        		controller dwdm 0/1/0/1
                      		    signalling refresh out-of-band interval 3600
                      		    signalling refresh out-of-band missed 24
                      		  !
                      		!
                      		mpls traffic-eng
                      		  gmpls optical-uni
                      		    controller dwdm 0/1/0/1
                      		    !
                      		  !
                      		!
                      		lmp
                      		  gmpls optical-uni
                      		    router-id 100.20.20.20
                      		    neighbor nbr_B
                      		      ipcc routed
                      		      neighbor router-id ipv4 unicast 100.19.19.19
                      		    !
                      		    controller dwdm 0/1/0/1
                      		      neighbor nbr_B
                      		      link-id ipv4 unicast 192.168.103.2
                      		      neighbor link-id ipv4 unicast 192.168.103.1
                      		      neighbor interface-id unnumbered 22
                      		    !
                      		  !
                      		!
                      
                        

                      Configuring LSP Diversity: Example

                      This example shows the configuration for two diverse LSPs:

                        mpls traffic-eng
                      		 attribute-set xro exclude-tun1
                      		  exclude best-effort lsp source 88.0.0.8 destination 10.0.0.2 tunnel-id 1 extended-tunnel-id 88.0.0.8
                      		  !
                      		 attribute-set xro exclude-tun2
                      		  exclude strict lsp source 88.0.0.8 destination 10.0.1.2 tunnel-id 2 extended-tunnel-id 88.0.0.8 lsp-id 2
                      		  !
                      		 gmpls optical-uni
                      		  controller dwdm 0/1/0/0
                      		   tunnel-properties
                      		    logging events lsp-status state
                      		    tunnel-id 1
                      		    destination ipv4 unicast 10.0.0.2
                      		    path-option 10 no-ero xro-attribute-set exclude-tun2
                      		   !
                      		  !
                      		  controller dwdm 0/1/0/1
                      		   tunnel-properties
                      		    logging events lsp-status state
                      		    tunnel-id 2
                      		    destination ipv4 unicast 10.0.1.2
                      		    path-option 10 no-ero xro-attribute-set exclude-tun1
                      		   !
                      		  !
                      		 !
                      		!
                      
                        

                      Additional References

                      Related Documents

                      For additional information related to implementing GMPLS UNI, refer to the following references:

                      Related Topic Document Title

                      GMPLS UNI commands

                      GMPLS UNI Commands module in Cisco ASR 9000 Series Aggregation Services Router MPLS Command Reference

                      MPLS Traffic Engineering commands

                      MPLS Traffic Engineering commands module in Cisco ASR 9000 Series Aggregation Services Router MPLS Command Reference

                      RSVP commands

                      RSVP commands module in Cisco ASR 9000 Series Aggregation Services Router MPLS Command Reference

                      Getting started material

                      Cisco ASR 9000 Series Aggregation Services Router Getting Started Guide

                      Information about user groups and task IDs

                      Configuring AAA Services module in Cisco ASR 9000 Series Aggregation Services Router System Security Configuration Guide

                      Standards

                      Standard Title

                      No new or modified standards are supported by this feature, and support for existing standards has not been modified by this feature.

                      MIBs

                      MIBs MIBs Link

                      To locate and download MIBs using Cisco IOS XR software, use the Cisco MIB Locator found at the following URL and choose a platform under the Cisco Access Products menu:

                      http:/​/​cisco.com/​public/​sw-center/​netmgmt/​cmtk/​mibs.shtml

                      RFCs

                      RFCs Title

                      RFC 3471

                      Generalized Multi-Protocol Label Switching (GMPLS) Signaling Functional Description

                      RFC 3473

                      Generalized Multi-Protocol Label Switching (GMPLS) Signaling Resource ReserVation Protocol-Traffic Engineering (RSVP-TE) Extensions

                      RFC 4208

                      Generalized Multiprotocol Label Switching (GMPLS) User-Network Interface (UNI): Resource ReserVation Protocol-Traffic Engineering (RSVP-TE) Support for the Overlay Model

                      RFC 4872

                      RSVP-TE Extensions in Support of End-to-End Generalized Multi-Protocol Label Switching (GMPLS) Recovery

                      RFC 4874

                      Exclude Routes - Extension to Resource ReserVation Protocol-Traffic Engineering (RSVP-TE)

                      RFC 6205

                      Generalized Labels for Lambda-Switch-Capable (LSC) Label Switching Routers

                      Technical Assistance

                      Description Link

                      The Cisco Technical Support website contains thousands of pages of searchable technical content, including links to products, technologies, solutions, technical tips, and tools. Registered Cisco.com users can log in from this page to access even more content.

                      http:/​/​www.cisco.com/​techsupport