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Black Box LR11xx Series Router Configurations Guide
140
Figure 46 MFR Configuration Detail
28.1.1 FR Configuration
A LR1104A LR1104A at Site 1 provides Frame Relay switching between a HSSI interface, connecting to the local router,
and a 4 x T1 MFR bundle, connecting to the LR1104A. Continuity of PVC 16 is maintained through the LR1104A
LR1104A, though this is not required.
The HSSI connection between the router and the LR1104A is defined as type UNI. The LR1104A serves as Frame
Relay DCE and the router as the Frame Relay DTE. Note that the Frame Relay (Layer 2) interface type is
independent of, and not necessarily the same as, the HSSI (Layer 1) interface type.
28.1.1.1 Configure the HSSI Bundle at Site 1
Blackbox/configure> interface bundle toRouter
Blackbox/configure/interface/bundle> link ussi 1
Blackbox/configure/interface/bundle> description "hssi link to router"
Blackbox/configure/interface/bundle> encap fr
Blackbox/configure/interface/bundle> fr
Blackbox/configure/interface/bundle/fr> intf_type dce
Blackbox/configure/interface/bundle/fr> lmi ansi
Blackbox/configure/interface/bundle/fr/lmi> exit
Blackbox/configure/interface/bundle/fr> pvc 16
/* pvc's default cir set to 52000000 bps */
Blackbox/configure/interface/bundle/fr/pvc> shaping cir 6144000 bcmax 6144000 bcmin
3072000
Blackbox/configure/interface/bundle/fr/pvc> exit
The BlackBox serves as a Frame Relay switch, connecting PVCs 16 and 31 through to another Frame Switch via a
Clear Channel DS-3 interface. Note that the Bcmin setting of 3.072 Mbps is maintained across all PVC 16
configurations, to correspond to the Class C setting of the MFR portion of the PVC.
Frame
Cloud
Router
SITE
3
S
ITE 2
S
ITE 1
Router
Router
100 Base-T
HSSI
PVC 16
Tasman 1450
NNI
NNI
NNI
PVC 16
PVC 31
DS3
Tasman 7030
DCE
DTE
Tasman 1400
100 Base-T
DTE
NNI
DCE
2 x T1
4 x T1
PVC 16
PVC 31
Frame
Switch
LR1114A
LR1114A