Configure SPBM IPv6 Shortcuts

Before you begin

  • Enable IPv4 Shortcuts before you enable IPv6 Shortcuts. IPv6 Shortcuts depend on IPv4 Shortcuts for some functions.

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

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

About this task

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.

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 network-to-network interface (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.

9039040-00 Rev AB