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    Configuring Inband Management with Dynamic Routing

    Use this procedure to set up dynamic inband management, including specifying which ODCC channels are used to carry management traffic, and configuring IS-IS on a BTI7800.

    Note: Dynamic inband management is supported starting with release 4.1.

    Prerequisites

    • The ROADM network and OSC channels have been set up. See ROADM Solutions.
    • The overlay management network has been designed. This design involves specifying which links in the optical network carry management traffic, and how management traffic is routed. It also identifies the BTI7800 acting as the gateway between the inband and out-of-band management networks.

    When configuring dynamic inband management, be aware of the following:

    • As a gateway in a dynamic inband management network, the BTI7800 supports the following:
      • A maximum of 64 nodes
      • Only one Network Entity Title (NET)
      • A maximum of 20 neighbors/interfaces
      • A maximum of 1000 routes
      • A maximum of 1000 entries in the IS-IS database
    • The default gateway specified by the system gateway-address command refers to a gateway reachable through the management Ethernet interface only (eth1). This is typically set only on the gateway NE.
    • The metric specified by the system gateway-metric command refers to the metric for the above default gateway. When you set a default route using the mgt static command, ensure that both this metric and the metric specified in the mgt static command are set according to which default route/gateway you want to take precedence.
    • Ensure the subnet length is set correctly when configuring the shared IP management address in a network where all NEs are in the same management subnet. On non-gateway NEs, the subnet length is usually set to /30.
    1. Enter configuration mode.
      bti7800# config
      Entering configuration mode terminal 
      bti7800(config)#
    2. Display the OSC channels on the NE.

      For example (output truncated for clarity):

      bti7800(config)# do show dol osc
      Dynamic Optical Layer Optical Service Channels 
      ----------------------------------------------  
      
      OSC Name        Admin State  Oper State  OL Id 
      --------------  -----------  ----------  ----- 
      osc:1/5/0/C1    enabled      lowerLayer 
      osc:1/5/0/L1    enabled      lowerLayer 
      osc:1/8/0/C1    enabled      lowerLayer 
      osc:1/8/0/C2    enabled      lowerLayer 
      osc:1/8/0/L1    enabled      lowerLayer 
      osc:1/9/0/C1    enabled      lowerLayer 
      osc:1/9/0/C2    enabled      lowerLayer 
      osc:1/9/0/L1    enabled      lowerLayer 
    3. Create a virtual management interface.
      bti7800(config)# interface mgt:1 type virtual
      bti7800(config-interface-mgt:1)#
    4. Associate the virtual management interface to the ODCC channel on an OSC interface.

      The OSC interfaces to associate are typically the OSC line interfaces that lead to other BTI7800s that you want to manage.

      bti7800(config-interface-mgt:1)# l1-interface osc:1/5/0/L1 channel ODCC
      bti7800(config-interface-mgt:1)# commit 
      Commit complete. 
    5. Repeat step 3 and 4 for each OSC interface carrying management traffic.

      Use a different virtual management interface each time. For example:

      bti7800(config)# interface mgt:2 type virtual
      bti7800(config-interface-mgt:2)# l1-interface osc:1/8/0/L1 channel ODCC 
      bti7800(config-interface-mgt:2)# commit 
      Commit complete.

      A maximum of 20 virtual management interfaces can be created on the system.

    6. If the NEs in the inband network are on the same subnet, enable proxy ARP on the gateway BTI7800. The gateway BTI7800 is the NE that routes traffic between the management Ethernet interface and the inband network.

      For example, on the gateway NE:

      bti7800(config)# system proxy-arp enable
      bti7800(config-system)# commit 
      Commit complete.

      By enabling proxy ARP, the gateway NE responds to ARPs on the management Ethernet interface on behalf of the NEs in the inband management network.

    7. Configure and enable IS-IS on the gateway BTI7800.

      A NET is required when specifying the gateway BTI7800. For example, on the gateway NE:

      bti7800(config)# router isis 1 net 49.0001.0000.0000.1111.00 administrative-status up
      bti7800(config-isis-1)# commit 
      Commit complete. 

      Note: Enabling IS-IS on the gateway BTI7800 automatically enables IS-IS on each virtual management interface created at step 3 and provisions the sysmgt interface (eth1). The sysmgt interface cannot be disabled or removed after IS-IS is provisioned on the gateway BTI7800.

    8. Enable IS-IS on the eth1 interface.
      bti7800(config)# system mgmt dynamic
      bti7800(config-system)# commit 
      Commit complete. 
    9. Use show commands to verify your configuration.
      1. To show the virtual management interface, use the show isis interface detail command.
      2. To show the current routes, use the show ip route command.
      3. To show the management static routes, use the show mgt static command.
      4. To show the management interface statistics, use the show isis counters command.

    Configuration Example: Dynamic Inband Management (Same Subnet)

    This section contains a configuration example for setting up a dynamic inband management network where all network elements are in the same management subnet.

    Figure 1 shows a 3-node optical network where the NE at 10.1.1.112 acts as the gateway between the external management network and the dynamic inband management network.

    Figure 1: Dynamic Inband Management Network (Same Subnet)

    Dynamic Inband Management Network (Same Subnet)

    NE at 10.1.1.112:

    NE-112# show running-config system
    system 
     mgmt-address    10.1.1.112/24 
     gateway-address 10.1.1.1 
     gateway-metric 0 
     proxy-arp enable 
    !  
    
    NE-112# show running-config router 
    router isis 1 
     administrative-status up 
     interface mgt:1 
      administrative-status up  
     ! 
     interface mgt:2  
      administrative-status up  
     ! 
     interface sysmgt  
      administrative-status up  
     !  
     net 49.0001.0000.0000.1111.00  
    
    NE-112# show running-config interface 
    interface mgt:1 
     type virtual 
     l1-interface osc:1/5/0/L1 
    interface mgt:2 
     type virtual 
     l1-interface osc:1/5/0/C2 
    !  
    
    NE-112# show running-config system 
    system  
     mgmt dynamic  
     proxy-arp enabled 
    !

    NE at 10.1.1.122:

    NE-122# show running-config system
    system  
     mgmt-address 10.1.1.122/30 
    !  
    
    NE-122# show running-config interface 
    interface mgt:1 
     type virtual 
     l1-interface osc:1/5/0/L1 
    ! 
    interface mgt:2  
     type virtual 
     l1-interface osc:1/8/0/L1 
    !  
    
    NE-122# show running-config router 
    router 25251 
     administrative-status up 
     interface mgt:1  
      administrative-status up 
     !  
     interface mgt:2 
      administrative-status up 
     !  
     interface sysmgt  
      administrative-status up  
     !  
    net 49.0001.0000.0000.2222.00 
    ! 

    NE at 10.1.1.133:

    NE-133# show running-config system
    system 
     mgmt-address 10.1.1.133/30 
    !  
    
    NE-133# show running-config interface 
    interface mgt:1 
     type virtual 
     l1-interface osc:1/5/0/L1 
    ! 
    interface mgt:2 
     type virtual 
     l1-interface osc:1/5/0/C2 
    !  
    
    NE-133# show running-config router 
    router 25251 
     administrative-status up 
     interface mgt:1 
      administrative-status up
     ! 
     interface mgt:2
      administrative-status up
     !  
     interface sysmgt 
      administrative-status up  
     !  
    net 49.0001.0000.0000.3333.00 
    ! 

    Configuration Example: Dynamic Inband Management (Different Subnets)

    This section contains a configuration example for setting up an inband management network where all network elements are in different subnets.

    Figure 2 shows a 3-node optical network where the NE at 10.1.1.112 acts as the gateway between the external management network and the inband management network.

    Figure 2: Dynamic Inband Management Network (Different Subnets)

    Dynamic Inband Management Network (Different Subnets)

    NE at 10.1.1.112:

    NE-112# show running-config system
    system 
     mgmt-address    10.1.1.112/24 
     gateway-address 10.1.1.1 
    !  
    
    NE-112# show running-config router 
    router isis 1 
     administrative-status up 
     interface mgt:1 
      administrative-status up 
     ! 
     interface mgt:2 
      administrative-status up 
     ! 
     interface sysmgt 
      administrative-status up 
     !  
     net 49.0001.0000.0000.1111.00  
    
    NE-112# show running-config interface 
    interface mgt:1 
     type virtual 
     l1-interface osc:1/5/0/L1 
    !  
    
    NE-112# show running-config system 
    system  
     mgmt dynamic 
    ! 

    NE at 10.1.2.122:

    NE-122# show running-config system
    system 
     mgmt-address 10.1.2.122/24 
    !  
    
    NE-122# show running-config interface 
    interface mgt:1 
     type virtual 
     l1-interface osc:1/5/0/L1 
    ! 
    interface mgt:2 
     type virtual 
     l1-interface osc:1/8/0/L1 
    !  
    
    NE-122# show running-config router 
    router 25251 
     administrative-status up 
     interface mgt:1 
      administrative-status up
     ! 
     interface mgt:2
      administrative-status up
     ! 
     interface sysmgt 
      administrative-status up 
     !  
     net 49.0001.0000.0000.2222.00 
    ! 

    NE at 10.1.3.132:

    NE-132# show running-config system
    system 
     mgmt-address 10.1.3.132/24 
    !  
    
    NE-132# show running-config interface 
    interface mgt:1 
     type virtual 
     l1-interface osc:1/5/0/L1 
    !  
    
    NE-132# show running-config router 
    router 25251 
     administrative-status up 
     interface mgt:1  
      administrative-status up 
     !  
     interface mgt:2 
      administrative-status up 
     !
     interface sysmgt 
      administrative-status up 
     !
     net 49.0001.0000.0000.3333.00 
    ! 

    Release History Table

    Release
    Description
    Dynamic inband management is supported starting with release 4.1.

    Modified: 2017-10-24