Load Balancing And Qos; Ethernet Link Aggregation And Mpls; 802.3Ad Link Aggregation Platform Considerations; Module Requirements - Juniper JUNOSE 11.1.X - LINK LAYER CONFIGURATION 4-7-2010 Configuration Manual

NOTE: On the ES2 10G LM and ES2-S1 GE-8 IOA combination, you can only configure
IP or VLAN over a LAG bundle.

Load Balancing and QoS

You can configure load balancing across 802.3ad links to provide quality of service
(QoS). To ensure that QoS is symmetrically applied to all the links, the router
periodically rebalances the traffic on the LAG. When you attach a QoS profile to the
LAG, the load balancing properties that are configured are applied to the LAG, and
determines how traffic is distributed.
For example, if VLANs are configured, IP queues are provisioned over the VLANs. In
this case, the default behavior is per-VLAN load balancing.
For more information, see Providing QoS for Ethernet Overview.

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 chapter Configuring Layer 2 Services over MPLS in JUNOSe BGP
and MPLS Configuration Guide for more information.

802.3ad Link Aggregation Platform Considerations

You can configure 802.3ad link aggregation on the following E Series Broadband
Services Routers:

Module Requirements

For information about the modules that support 802.3ad link aggregation on ERX14xx
models, ERX7xx models, and the ERX310 router:
Chapter 6: Configuring 802.3ad Link Aggregation and Link Redundancy
E120 router
E320 router
ERX1440 router
ERX1410 router
ERX710 router
ERX705 router
ERX310 router
See ERX Module Guide, Table 1, Module Combinations for detailed module
specifications.
See ERX Module Guide, Appendix A, Module Protocol Support for information about
the modules that support 802.3ad link aggregation.
802.3ad Link Aggregation Platform Considerations
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