7705 SAR Interfaces
7705 SAR OS Interface Configuration Guide Page 61
Use the following CLI syntax to configure ATM interface parameters for IMA multilink
bundles.
CLI Syntax: port>multilink-bundle
ima
atm
cell-format cell-format
min-vp-vpi value
Configuring Multilink PPP Bundles
Multilink PPP bundles can be created with as few as one, or as many as eight members. Up
to eight multilink bundles can be configured per 16-port T1/E1 ASAP Adapter card, and
each bundle represents a single connection between two routers. The bundles aggregate
channelized ports to define the bandwidth between the routers over the DS1 links.
Multilink bundling is based on a link control protocol (LCP) option negotiation that permits
a system to indicate to its peer that it is capable of combining multiple physical links into a
bundle.
Multilink bundling operations are modeled after a virtual PPP link-layer entity where
packets received over different physical link-layer entities are identified as belonging to a
separate PPP network protocol (the Multilink Protocol, or MP) and recombined and
sequenced according to information present in a multilink fragmentation header. All packets
received over links identified as belonging to the multilink arrangement are presented to the
same network-layer protocol processing machine, whether they have multilink headers or
not.
When you configure multilink bundles, consider the following guidelines:
• a multilink bundle configuration should include at least two ports
• a maximum of eight ports can be included in a multilink bundle
• multilink bundles can only be aggregated on a single adapter card
• on the network side, assigning a channel to a multilink bundle automatically assigns
all channels on the port
• on the access side, assigning a channel to a multilink bundle does not automatically
assign all channels; you must manually specify all channels on the port to be part of
the multilink bundle
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