Junos® OS Ethernet Interfaces Configuration ... - Juniper Networks

To configure a 100-Gigabit Ethernet PIC:
1. Perform the media configuration:
The 100-Gigabit Ethernet PIC features a 100 gigabit per second pipe. The media-related
configuration commands for et-x/0/0:0 and et-x/0/0:1 must both be configured at
the same time and configured with the same value, otherwise the commit operation
fails.
Copyright © 2012, Juniper Networks, Inc.
When configuring to activate or deactivate the interface, if the interface contains the
described media-related configuration, it must activate and deactivate both units 0
and 1 at the same time, otherwise the commit operation fails.
The following media configuration commands have the above described restriction:
• # set interfaces et-x/0/0:1 disable
• # set interfaces et-x/0/0:1 gigether-options loopback
• # set interfaces et-x/0/0:1 mtu yyy
Due to an MTU restriction, the vlan-tagging and flexible-vlan-tagging configuration
on et-x/0/0:0 and et-x/0/0:1 must be same, otherwise the commit operation fails.
2. Specify the logical interfaces:
a. Two physical interfaces are created when the 100-Gigabit Ethernet PIC is brought
online (et-x/0/0:0 and et-x/0/0:1, where x represents the FPC slot number). Each
physical interface represents two internal 50-gigabit Ethernet Packet Forwarding
Engines.
b. Two logical interfaces are configured under each physical interface: Packet
Forwarding Engine 0 is physical interface 0 and Packet Forwarding Engine 1 is
physical interface 1.
3. Configure the 802.3 link aggregation:
a. Two physical interfaces are created for each 100-Gigabit Ethernet PIC. To utilize
bandwidth beyond 50 gigabits, an aggregated interface must be explicitly
configured on the 100-Gigabit Ethernet PIC that includes these two 50-gigabit
interfaces.
b. Each 100-Gigabit Ethernet PIC aggregate consumes one of the router-wide
aggregated Ethernet device pools. In Junos OS with 100-Gigabit Ethernet PICs, you
cannot exceed the router limit of 128 Ethernet PICs.
c. In each aggregated bundle, each 100-Gigabit Ethernet PIC consumes two aggregate
members. Hence, an aggregated bundle consisting of only one 100-Gigabit Ethernet
PIC supports only up to half of the Junos OS limit for the number of members. The
Junos OS supports a maximum of 16 links for up to 8 100-Gigabit Ethernet PIC
links.
4. Configure the Packet Forwarding Engine features:
Chapter 27: Configuring 100-Gigabit Ethernet PICs/MICs
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