Configure SPBM IPv6 Shortcuts

Important

Important

You must enable IPv4 Shortcuts before you enable IPv6 Shortcuts because IPv6 Shortcuts depend on IPv4 Shortcuts for some functions.

Configuring IPv6 Shortcuts is essentially the same as the IPv4 procedure except you use the following IPv6 commands instead of their IPv4 equivalents:

  • Use ipv6 interface address to create a CLIPv6 interface with an IPv6 address.

  • Use ipv6 ipv6–source-address to specify the CLIPv6 interface as the source address for IPv6 Shortcuts.

  • Use spbm ipv6 enable to enable IPv6 Shortcuts.

  • Use ipv6 redistribute {bgp | direct | isis | rip | ospf | static} enable to control the redistribution of GRT IPv6 routes into the SPBM IS-IS domain.

  • Use ipv6 route preference protocol spbm–level1 to change route preference values for IPv6 Shortcut routes learned through IS-IS.

To enable IPv6 Shortcuts on the BEBs, you must configure a circuitless IPv6 (CLIPv6) address (loopback address), and specify this address as the IS-IS source address. This source address is automatically advertised into IS-IS using TLV 236. In addition, to advertise routes from the BEBs into the SPBM network, you must enable route redistribution of direct and static routes into IS-IS.

Note

Note

The loopback address on each switch or BEB must all be in different subnets to ensure connectivity between them. To do this, use a 32-bit mask with the CLIP address, and the CLIPv6 address prefix must be 128.

Before you begin

  • You must configure the required SPBM and IS-IS infrastructure, which includes the creation of SPBM B-VLANs.

  • Before redistributing routes into IS-IS, you must create the Customer VLANs, add slots/ports, and add the IPv6 addresses and network masks.

Procedure

  1. Enter Loopback Interface Configuration mode

    enable

    configure terminal

    interface Loopback <1-256>

  2. Configure a CLIPv6 interface to use as the source address for SPBM IPv6 Shortcuts:

    ipv6 interface address WORD<0-255>

  3. Exit the Loopback Interface Configuration mode to Global Configuration mode:

    exit

  4. Log on to IS-IS Router Configuration mode:

    router isis

  5. Specify the CLIPv6 interface as the source address for SPBM IPv6 Shortcuts:

    ipv6-source-address WORD<0-46>

  6. Enable SPBM IPv6 Shortcuts:

    spbm <1–100> ipv6 enable

  7. Display the status of SPBM IPv6 Shortcuts on the switch:

    show isis spbm

  8. Identify IPv6 routes on the local switch to be announced into the SPBM network.

    ipv6 redistribute {bgp | direct | ospf | rip | static}

  9. Enable the IPv6 routes to be announced into the SPBM network:

    ipv6 redistribute {bgp | direct | ospf | rip | static} enable

  10. Exit to Global Configuration mode:

    exit

  11. Optional: Change route preference values for IPv6 Shortcut routes learned through IS-IS:

    ipv6 route preference protocol spbm–level1 <0–255>

  12. Apply the configured redistribution:

    ipv6 isis apply redistribute {bgp | direct | ospf | rip | static |} [vrf WORD<1-16>]

Example

Switch:1>enable
Switch:1#configure terminal
Switch:1(config)#interface loopback 123
Switch:1(config-if)#ipv6 interface address 123::1/128
Switch:1(config-if)#exit
Switch:1(config)#router isis
Switch:1(config-isis)#ipv6 ipv6-source-address <non-link-local ipv6–address>
Switch:1(config-isis)#spbm 1 ipv6 enable
Switch:1(config-isis)#show isis spbm
==============================================================================================================
SPBM       B-VID      PRIMARY    NICK     LSDB     IP       IPV6     MULTICAST  SPB-PIM-GW         STP-MULTI
INSTANCE              VLAN       NAME     TRAP                                                     HOMING
--------------------------------------------------------------------------------------------------------------
1          10                    1.11.16  disable  disable  disable  disable    disable            enable

==============================================================================================================
                                             ISIS SPBM SMLT Info
==============================================================================================================
SPBM       SMLT-SPLIT-BEB       SMLT-VIRTUAL-BMAC     SMLT-PEER-SYSTEM-ID
INSTANCE
--------------------------------------------------------------------------------------------------------------
1          primary              00:00:00:00:00:00


--------------------------------------------------------------------------------------------------------------
 Total Num of SPBM instances: 1
--------------------------------------------------------------------------------------------------------------

Variable Definitions

The following table defines parameters for the IPv6 Shortcuts commands.

Variable

Value

ipv6-source-address WORD<0-46>

Specifies the source IPv6 address for locally generated IPv6 packets whose egress port is an SPBM NNI port. The WORD<0-46> value must be a locally configured loopback IPv6 address (CLIPv6).

Use the no option to delete the specified IPv6 address.

spbm<1–100> ipv6 enable

Enables or disables SPBM IPv6 Shortcuts.

The default is disabled. Use the no or default options to disable SPBM IPv6 Shortcuts.

ipv6 route preference protocol spbm–level1 <0–255>

Sets the route preference value for IPv6 Shortcut routes learned through IS-IS. The default preference is 7.

ipv6 redistribute {bgp | direct | static | ospf | rip} enable

Specifies the GRT IPv6 route that you want to redistribute into the SPBM IS-IS domain.

The default is disabled. Use the no option to disable the redistribution.

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