Configuring Frf.12; Frf.12; Dte-Dce Frf.12 Where Dce Terminates The Traffic - Avaya 1000 Series Configuration Manual

Multilink Frame Relay

Configuring FRF.12

FRF.12

FRF.12 is a backward compatible, lightweight fragmentation protocol and is configurable on
one or more PVCs of a Frame Relay bundle. With FRF.12 Frame Relay DTEs and DCEs
fragment long frames into sequences of shorter frames. Upon arrival, the fragments are
reassembled into the original frame by the receiving peer DTE or DCE.
When used in combination with interleaving, serialization delay of voice packets over low speed
frame links can be reduced resulting in performance enhancements. Interleaving is
configurable on a Frame Relay bundle basis.
FRF.12 can be helpful when a single VC in a branch office location is needed to transport both
voice and data over a FR WAN or for separate VCs in a FR interface used in carrying voice or
data.
FRF.12 design considerations:
• On AVCs (FRF.15 End-to-end MFR), the FRF.12 feature is not supported.
• Oversubscription of bandwidth on the Frame Relay bundle is not allowed when
interleaving is turned on.
• Class Based Queuing (CBQ) over Frame Relay feature is not recommended on Frame
Relay bundles with interleaving enabled.
• 0 –CIR PVCs can not be supported on the FR bundles with interleaving enabled.
• FRF.12 fragmentation is not currently supported on the bridged PVCs.
Note:
It is not recommended to configure classed-based queueing (CBQ) and Frame relay
interleaving (FRF.12) simultaneously on the same interface.

DTE-DCE FRF.12 where DCE terminates the traffic

Configure DTE-1:
Example
Configure a bundle:
DTE-1/configure> interface bundle todce1
DTE-1/configure/interface todce1> link t1 1:1-2
DTE-1/configure/interface todce1> encap fr
DTE-1/configure/interface todce1> fr
196 Avaya Secure Router 1000 Series Configuration Guide December 2010