Information About Configuring Link Bundles; Link Bundling Overview - Cisco ASR 9000 Series Configuration Manuallines

Information About Configuring Link Bundles

• You know the interface IP address.
• You know which links should be included in the bundle you are configuring.
• If you are configuring an Ethernet link bundle, you have at least one of these Ethernet line cards installed
Note For more information about physical interfaces, PLIMs, and modular services cards, refer to the Cisco ASR
9000 Series Aggregation Services Router Hardware Installation Guide .
Information About Configuring Link Bundles
To implement the Link Bundling feature, you must understand these concepts:

Link Bundling Overview

A link bundle is simply a group of ports that are bundled together and act as a single link. The advantages of
link bundles are these:
• Multiple links can span several line cards to form a single interface. Thus, the failure of a single link
• Bundled interfaces increase bandwidth availability, because traffic is forwarded over all available members
Although the individual links within a single bundle can have varying speeds, all links within a bundle must
be of the same type.
Cisco IOS XR software supports these methods of forming bundles of Ethernet interfaces:
• IEEE 802.3ad—Standard technology that employs a Link Aggregation Control Protocol (LACP) to
• EtherChannel—Cisco proprietary technology that allows the user to configure links to join a bundle, but
L2VPN and Ethernet Services Configuration Guide for Cisco ASR 9000 Series Routers, IOS XR Release 6.3.x
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If you suspect user group assignment is preventing you from using a command, contact your AAA
administrator for assistance.
in the router:
• 2-port 10-Gigabit Ethernet line card
• 4-port 10-Gigabit Ethernet line card
• 8-port 10-Gigabit Ethernet line card
• 16-port 10-Gigabit Ethernet line card
• 20-port Gigabit Ethernet line card
• 40-port Gigabit Ethernet line card
does not cause a loss of connectivity.
of the bundle. Therefore, traffic can flow on the available links if one of the links within a bundle fails.
Bandwidth can be added without interrupting packet flow.
ensure that all the member links in a bundle are compatible. Links that are incompatible or have failed
are automatically removed from a bundle.
has no mechanisms to check whether the links in a bundle are compatible.
Configuring Link Bundles