Overview

Bundle objects

Bundle objects can be configured as multilink PPP, IMA group, or FR group bundles. Multilink PPP, IMA group, and FR group bundles appear as Bundle objects under the daughter card object if the daughter card has been configured as a channelized MDA.

APS Bundle objects appear in the navigation tree as children of the shelf object. APS Bundle objects are configured to protect multilink PPP and IMA bundles on channelized ASAP MDAs. See Chapter 38, APS for more information on APS and APS bundles.

Multilink PPP bundles

You can create MLPPP bundles to:

bundle DS0 channels together to be used as a SAP
provide a mechanism to distribute data across multiple links to achieve higher bandwidth

The following general rules apply to multilink bundles.

Table 15-2, Multilink bundle configuration maximum lists the maximum number of multilink bundles that can be created on each MDA.
DS0 channels can be aggregated on a single MDA only.
Up to 8 members can be added to a bundle.
The Encap Type parameter of a member cannot be set to FR.
A DS0 channel can host only one SAP.
If a channel is being used as a SAP, it cannot be added to a bundle.

Table 15-2: Multilink bundle configuration maximum

MDA	Bundle maximum
4 x Channelized OC3/OC12 ASAP SFP MDA	32
All MDAs other than Channelized ASAP MDAs	56
1 x OC12 Deep Channel 4 x OC3 Deep Channel 12 x DS3/E3 Deep Channel 4 x DS3/E3 Deep Channel	56
4 x Channelized DS3/E3 ASAP MDA	112
4 x Channelized OC3 ASAP 1 x Channelized OC12 ASAP 12 x Channelized DS3/E3 ASAP	256

See To create an MLPPP bundle to create an MLPPP bundle.

IMA group bundles

IMA group bundles combine ATM-encapsulated DS0 channel groups into a single ATM interface. The following general rules apply to IMA group bundles.

IMA group bundles can only be created on:
- channelized ASAP MDAs with SDH or SONET framing the 7750 SR
- channelized DS1/E1 ASAP daughter cards on the 7705 SAR
The encapsulation type of the DS0 group channel must be ATM.
The Clock Source parameter of the DS1 channel must be set to Node-Timed.
Table 15-3, IMA group bundle configuration maximums lists the maximum number of IMA group bundles that can be created on each MDA.
IMA group members must be on the same MDA.

Table 15-3: IMA group bundle configuration maximums

Device	MDA	Bundle maximum
7750 SR	All MDAs other than channelized ASAP MDAs	56
7750 SR	4 x Channelized DS3/E3 ASAP MDA	112
7750 SR	4 x Channelized OC3 ASAP 1 x Channelized OC12 ASAP 12 x Channelized DS3/E3 ASAP	256
7705 SAR	16 x Channelized DS1/E1 ASAP	8
7705 SAR	2 x Channelized OC3/STM1 ASAP	16

See To create an IMA group bundle to create an IMA group bundle.

FR group bundles

FR group bundles are used to fragment lower priority DLCI frames to minimize jitter and delay on higher priority DLCI frames. The following general rules apply to FR group bundles.

FR group bundles can only be created on channelized ASAP MDAs.
FRF12 cannot be enabled on a SAP that is using an FR group bundle.
DS0 channel groups must have all their timeslots selected and have their encapsulation type set to FR to be configured as bundle members.

Note: You can configure a maximum of 128 FR group bundles on an MDA.

See To create an FR group bundle to create an FR group bundle.