Configure an SPBM Layer 2 Transparent Port UNI

Use this procedure to configure a Transparent Port UNI or ELAN Transparent service.

Note

If you are configuring a T-UNI to terminate on a port or MLT on a switch in a vIST switch cluster, you must also configure the T-UNI I-SID on the other switch of the vIST switch cluster. You must configure the T-UNI I-SID on both switches of a vIST pair. It is not necessary to assign an actual port or MLT to the T-UNI on the second switch.

Before you begin

You must configure the required SPBM and IS-IS infrastructure, which includes creating the SPBM B-VLANs.
You must associate a T-UNI LACP MLT with a VLAN before mapping the LACP MLT to a T-UNI I-SID.

Caution

In the case of T-UNI LACP SMLT, before you configure SMLT on switch peers, ensure that the T-UNI LACP MLT on each peer is always associated with a VLAN, even if it is the default VLAN, and that it is added to a T-UNI I-SID. Otherwise, traffic is not forwarded on the T-UNI LACP MLT.

About this task

You can configure Transparent Port UNI when either of the following apply:

You want all tagged and untagged traffic on a port to be classified into the same broadcast domain.
You want to offer a transparent provider solution.

Procedure

Enter Global Configuration mode:

enable

configure terminal
Configure a Transparent Port UNI (ELAN-Transparent based service):

i-sid <1-16777215> elan-transparent

This command automatically takes you to the ELAN-Transparent I-SID Configuration mode.
Add ports to the ELAN-Transparent based service:

port {slot/port[/sub-port][-slot/port[/sub-port]][,...]}

A warning message displays indicating that adding a port to a T-UNI I-SID removes the port from all VLANs. Type y to continue.
Add an MLT to the Elan-Transparent based service:

mlt <1–512>

A warning message displays indicating that adding an MLT to a Transparent Port UNI I-SID removes the MLT from all VLANs. Type y to continue.
To verify the Transparent Port UNI configuration, enter:

show i-sid <1–16777215>
To remove ports or MLT from the ELAN-Transparent based service, enter one of the following commands:

no port {slot/port[/sub-port][-slot/port[/sub-port]][,...]}

OR

no mlt <1–512>
To delete the ELAN-Transparent based service, enter:

no i-sid <1-16777215>

Example

Configure a Transparent Port UNI I-SID (ELAN-Transparent based service).

Switch:1(config)#i-sid 3 elan-transparent

Switch:1(elan-tp:3)#port 1/25
Adding Ports to Transparent UNI i-sid removes it from all VLANS.
Do you wish to continue (y/n) ? y
Switch:1(elan-tp:3)#

Switch:1(elan-tp:3)#mlt 1
Adding MLTs to Transparent UNI i-sid removes it from all VLANS.
Do you wish to continue (y/n) ? y
Switch:1(elan-tp:3)#

Verify Transparent Port UNI or ELAN-Transparent based service configuration.

Switch:1(config)#show i-sid 3
===============================================================================
                                      Isid Info
================================================================================
ISID        ISID               PORT            MLT            ORIGIN      ISID
ID          TYPE     VLANID    INTERFACES      INTERFACES                 NAME
--------------------------------------------------------------------------------
3           ELAN_TR    N/A      -               -             CONFIG      ISID-3

Variable definitions

The following table defines parameters for the i-sid command.

Note

When SPB is enabled, I-SID IDs 16000000 (0xF42400) and greater, up to 16,777,215 (0xFFFFFF), are reserved for dynamic i-sid allocation and used to support IP Multicast traffic over SPB and other advanced Fabric services.


Variable	Value
i-sid `<1–16777215>` elan-transparent	Creates an ELAN-Transparent based service. The service interface identifier (I-SID) range is 1 to 16777215.
port {slot/port[/sub-port][-slot/port[/sub-port]][,...]}	Add ports to the ELAN-Transparent based service.
mlt`<1–512>`	Add MLTs to the ELAN-Transparent based service. The MLT range is 1 to 512.