JUNOSe 9.0.x Physical Layer Configuration Guide > Configuring Ethernet Interfaces > Configuring Higher-Level Protocols over Ethernet

Configuring Higher-Level Protocols over Ethernet

You can configure one or more protocols over Ethernet with or without VLANs. This section focuses on non-VLAN configurations only. You can configure the following higher-level protocols on Fast Ethernet, Gigabit Ethernet, and 10-Gigabit Ethernet interfaces:

• IP
• Point-to-Point Protocol over Ethernet (PPPoE)
• Multiprotocol Label Switching (MPLS)

The Ethernet configuration examples in this section use combinations of these protocols. Figure 30 illustrates how different protocols can be multiplexed over a single physical link without the use of VLANs.

Figure 30: Multiplexing Multiple Protocols over a Single Physical Link

The following sections describe how to create the following common non-VLAN configurations, which you can configure on Fast Ethernet, Gigabit Ethernet, and 10-Gigabit Ethernet interfaces:

• IP over Ethernet
• PPPoE over Ethernet
• IP over Ethernet and MPLS over Ethernet
• IP over Ethernet, MPLS over Ethernet, and PPPoE over Ethernet

Configuring IP over Ethernet

To configure IP over an Ethernet interface:

1. Specify a Fast Ethernet, Gigabit Ethernet, or 10-Gigabit Ethernet port.

host1(config)#interface fastEthernet 4/1

2. Create an IP interface.

host1(config-if)#ip address 192.5.127.8 255.255.255.0 

Figure 31 illustrates this configuration.

Figure 31: Example of IP over Ethernet Stacking Configuration Steps

Configuring PPPoE over Ethernet

To configure PPPoE over an Ethernet interface:

1. Specify a Fast Ethernet, Gigabit Ethernet, or 10-Gigabit Ethernet port.

host1(config)#interface fastEthernet 4/1

2. Specify PPPoE as the encapsulation method on the interface.

host1(config-if)#pppoe

3. Create a PPPoE subinterface.

host1(config-if)#pppoe subinterface fastEthernet 4/1.1

4. Specify PPP as the encapsulation method on the interface.

host1(config-if)#encapsulation ppp

5. Assign an IP address and mask.

host1(config-if)#ip address 164.10.6.51 255.255.255.0

6. (Optional) Configure additional PPPoE subinterfaces by completing Steps 3 through 5 using unique numbering.

Figure 32 illustrates this configuration.

Figure 32: Example of PPPoE Stacking Configuration Steps

Configuring IP and MPLS over Ethernet

To configure both IP and MPLS over an Ethernet interface:

1. Specify a Fast Ethernet, Gigabit Ethernet, or 10-Gigabit Ethernet port.

host1(config)#interface fastEthernet 4/0

2. Create an IP interface.

host1(config-if)#ip address 192.5.127.8 255.255.255.0

3. Create an MPLS interface.

host1(config-if)#mpls

Figure 33 illustrates this configuration.

Figure 33: Example of IP and MPLS Stacking Configuration Steps

Configuring IP, MPLS, and PPPoE over Ethernet

To configure IP, MPLS, and PPPoE over an Ethernet interface:

1. Specify a Fast Ethernet, Gigabit Ethernet, or 10-Gigabit Ethernet port.

host1(config)#interface fastEthernet 4/0

2. Create an IP interface.

host1(config-if)#ip address 192.5.127.8 255.255.255.0

3. Create an MPLS interface.

host1(config-if)#mpls

4. Create a PPPoE interface by specifying PPPoE as the encapsulation method on the interface.

host1(config-if)#pppoe

5. Create a PPPoE subinterface.

host1(config-if)#pppoe subinterface fastEthernet 4/1.1

6. Specify PPP as the encapsulation method on the interface.

host1(config-if)#encapsulation ppp

7. Assign an IP address and mask.

host1(config-if)#ip address 192.6.129.5 255.255.255.0

8. (Optional) Configure additional PPPoE subinterfaces by completing Steps 5 through 7 using unique numbering.

Figure 34 illustrates this configuration.

Figure 34: Example of IP, MPLS, and PPPoE Stacking Configuration Steps

mpls

• Use to enable, disable, or delete MPLS on an interface. MPLS is disabled by default.
• Example

host1(config)#mpls

• Use the no version to halt MPLS on the interface and delete the MPLS interface configuration.

Ethernet Link Aggregation and MPLS

CE-side load balancing in a Martini layer 2 transport environment enables an E-series router to interoperate with an 802.3ad switch in a topology designed for Ethernet link aggregation. See JUNOSe BGP and MPLS Configuration Guide, Chapter 5, Configuring Layer 2 Services over MPLS for more information.