IPv6 Functionality

This chapter describes the options for enabling IPv6 functionality for Cisco SD-WAN templates and policies. Use the information in this chapter if your deployment uses IPv6.

Configure IPv6 Functionality for an Interface or Subinterface Template

To configure IPv6 functionality for an interface or subinterface template, perform the following steps.

Cisco SD-WAN supports dual stack: you can configure IPv4 and IPv6 in the same deployment. You can configure up to three global IPv6 addresses per interface.

  1. From the Cisco vManage menu, choose Configuration > Templates.

  2. Click Feature Templates, and click Add Template to select an appropriate device model.


    Note

    In Cisco vManage Release 20.7.x and earlier releases, Feature Templates is titled as Feature.

  3. Select Cisco VPN Interface Ethernet from the list of templates.

  4. From Basic Configuration, click IPv6 and configure the parameters that the following table describes:

Parameter Name

Description

Static

This radio button is selected by default because IPv6 addresses are static.

IPv6 Address

Enter the IPv6 address of the interface or subinterface.

Configure IPv6 Functionality for an OMP Template

To configure IPv6 functionality for an Overlay Management Protocol (OMP) template, follow these steps:

  1. From the Cisco vManage menu, choose Configuration > Templates.

  2. Click Feature Templates, and click Add Template to select an appropriate device model.


    Note

    In Cisco vManage Release 20.7.x and earlier releases, Feature Templates is titled as Feature.

  3. Select Cisco OMP from the list of templates.

  4. Click Advertise and choose IPv6 to configure the parameters that the following table describes:

Parameter Name

Description

Connected

Click Off to disable advertising connected routes to OMP.

By default, connected routes are advertised to OMP.

Static

Click Off to disable advertising static routes to OMP.

By default static routes are advertised to OMP.

BGP

Click On to advertise BGP routes to OMP. By default, BGP routes are not advertised to OMP.

Configure IPv6 Functionality for a BGP Template

To configure IPv6 functionality for a Border Gateway Protocol (BGP) template, follow these steps:

  1. From the Cisco vManage menu, choose Configuration > Templates.

  2. Click Feature Templates, and click Add Template to select an appropriate device model.


    Note

    In Cisco vManage Release 20.7.x and earlier releases, Feature Templates is titled as Feature.

  3. Select Cisco BGP from the list of templates.

  4. Click Unicast Address Family and choose IPv6 to configure the parameters that the following table describes:

Tab

Parameter Name

Description

Maximum Paths

Specify the maximum number of parallel IBGP paths that can be installed into a route table to enable IBGP multipath load sharing.Range: 0 to 32

Address Family

Enter the BGP IPv6 unicast address family.

RE-DISTRIBUTE

Click the Redistribute tab, and then click Add New Redistribute.

Protocol

 Select the protocols from which to redistribute routes into BGP, for all BGP sessions. Options are Connected, NAT, OMP, OSPF, and Static. At a minimum, select the following:

  • For service-side BGP routing, select OMP. By default, OMP routes are not redistributed into BGP.

  • For transport-side BGP routing, select Connected, and then under Route Policy, specify a route policy that has BGP advertise the loopback interface address to its neighbors.

Route Policy

Enter the name of the route policy to apply to redistributed routes.

Click Add to save the redistribution information.

NETWORK

Click the Network tab, and then click Add New Network.

Network Prefix

Enter a network prefix, in the format of prefix/length, to be advertised by BGP.

Click Add to save the network prefix.

AGGREGATE ADDRESS

Click the Aggregate Address tab, and then click Add New Aggregate Address.

Aggregate Prefix

Enter the prefix of the addresses to aggregate for all BGP sessions, in the format prefix/length.

AS Set Path

Click On to generate set path information for the aggregated prefixes.

Summary Only

Click On to filter out more specific routes from BGP updates.

Click Add to save the aggregate address.

  1. In the Neighbor area, click IPv6, create a new neighbor or edit an existing one, and then configure the parameters that the following table describes.

Parameters marked with an asterisk are required.

Parameter Name

Description

IPv6 Address*

Specify the IPv6 address of the BGP neighbor.

Description

Enter a description of the BGP neighbor.

Remote AS*

Enter the AS number of the remote BGP peer.

Address Family

Select Global from the drop-down list, click On and select the address family. Enter the address family information.

Shutdown

To shut down a BGP neighbor when you push the template, select Global from the drop-down list and then click Yes.Default: Off

Configure IPv6 Functionality for a VRRP Template

To configure IPv6 functionality for a Virtual Router Redundancy Protocol (VRRP) template, follow these steps:

  1. From the Cisco vManage menu, choose Configuration > Templates.

  2. Click Feature Templates, and click Add Template to select an appropriate device model.


    Note

    In Cisco vManage Release 20.7.x and earlier releases, Feature Templates is titled as Feature.

  3. Select Cisco VPN Interface Ethernet from the list of templates.

  4. Click VRRP and choose IPv6.

  5. Click New VRRP.

  6. Configure the parameters that the following table describes:

Parameter Name

Description

Group ID

Enter a virtual router ID, which represents a group of routers.

Range:

1 through 255

Priority

 Enter the priority level of the router within a VRRP group.

  • Range: 1 through 254

  • Default: 100

Timer

Not used.

Track OMP

Select On to track the Overlay Management Protocol (OMP) session running on the WAN connection when determining the primary VRRP virtual router.Default: Off

Track Prefix List

Enter a value to track a list of IPv6 remote prefixes. This value is an alphanumeric string that is configured under Policy.

Link Local IPv6 Address

Enter a virtual link local IPv6 address, which represents the link local address of the group. The address should be in standard link local address format. For example, FE80::AB8.

Global IPv6 Address

Enter a virtual global unicast IPv6 address, which represents the global address of the group. The address should be an IPv6 global prefix address that has the same mask as the interface forwarding address on which the VRRP group is configured. For example, 2001::2/124.

You can configure up to 3 global IPv6 addresses.

Configure IPv6 Functionality for an ACL Template or a QoS Template

To configure IPv6 functionality for an ACL and QoS template, follow these steps:

  1. From the Cisco vManage menu, choose Configuration > Templates.

  2. Click Feature Templates, and click Add Template to select an appropriate device model.


    Note

    In Cisco vManage Release 20.7.x and earlier releases, Feature Templates is titled as Feature.

  3. Select Cisco VPN Interface Ethernet from the list of templates.

  4. From ACL/QoS, configure the parameters that the following table describes:

Parameter Name

Description

Ingress ACL – IPv6

Click On to enable the IPv6 ingress access list.

IPv6 Ingress Access List

Enter the name of the IPv6 ingress access list.

Egress ACL – IPv6

Click On to enable the IPv6 egress access list.

IPv6 Egress Access List

Enter the name of the IPv6 egress access list.

Configure IPv6 Functionality for a Logging Template

To configure IPv6 functionality for a Logging template, follow these steps:

  1. From the Cisco vManage menu, choose Configuration > Templates.

  2. Click Feature Templates, and click Add Template and then select an appropriate device model.


    Note

    In Cisco vManage Release 20.7.x and earlier releases, Feature Templates is titled as Feature.

  3. Select Cisco Logging from the list of templates.

  4. From Server, click IPv6.

  5. Configure the parameters that the following table describes.

Parameter Name

Description

IPv6 Hostname/IPv6 Address

Host name or IP address of the server to direct the logging information.

VPN ID

VPN ID of the VPN source interface.

Source Interface

Name of the source interface.

Priority

Choose the maximum severity of messages that are logged.

Configure IPv6 Functionality for a New Prefix List

To configure an IPv6 address for a new prefix list, follow these steps:

  1. From the Cisco vManage menu, choose Configuration > Policies.

  2. From the Custom Options drop-down list, select Lists. You can make this selection for a Centralized Policy or a Localized Policy

  3. Select Prefix from the list on the left and then select New Prefix List.

  4. Click IPv6 and enter the IPv6 address in Add Prefix.

Configure IPv6 Functionality for a Data Prefix

To configure an IPv6 address for a new prefix list, follow these steps:

  1. From the Cisco vManage menu, choose Configuration > Policies.

  2. From the Custom Options drop-down list, select Lists. You can make this selection for a Centralized Policy or a Localized Policy

  3. Select Data Prefix from the list on the left and then select New Data Prefix List.

  4. From Internet Protocol, click IPv6 and enter the IPv6 address in Add Prefix.

Configure IPv6 Functionality for a Centralized Policy

To configure a centralized policy to apply to IPv6 address families, follow these steps:

  1. From the Cisco vManage menu, choose Configuration > Policies.

  2. From the Custom Options drop-down menu, select Traffic Policy under Centralized Policy.

  3. Select Traffic Data.

  4. Select Add Policy and click Create New.

  5. Click Sequence Type and then select Traffic Engineering.

  6. Click Sequence Rule.

  7. From the Protocol drop-down list, select IPv6 to apply the policy only to IPv6 address families, or select Both to apply the policy IPv4 and IPv6 address families.

  8. Click Sequence Type and then select QoS.

  9. Click Sequence Rule.

  10. From the Protocol drop-down list, click IPv6 to apply the policy only to IPv6 address families, or select Both to apply the policy IPv4 and IPv6 address families.

Configure IPv6 Functionality for a Localized Policy

To configure a localized policy to apply to IPv6 address families, follow these steps:

  1. From the Cisco vManage menu, choose Configuration > Policies.

  2. From the Custom Options drop-down list, select Access Control Lists under Localized Policy.

  3. Click Add Access Control List Policy and choose Add IPv6 ACL Policy. The policy you create will apply only to IPv6 address families.