Figure 16: Mc-Aps Mlppp On Channelized Access Interfaces Example - Alcatel-Lucent 7750 Configuration Manual

different aggregation routers to provide protection against router failure. The MLPPP bundle
operates between the BTS and the aggregation routers. At any one time only one of the two
aggregation routers is actually terminating the MLPPP bundle (whichever aggregation router is
processing the active APS circuit).
This example illustrates the following:
•
•
•
BITS I/F
T1 # 2
EV-DO
BTS
T1 # 1
RAN Data VLAN
Inter-Router VLAN
Hand-off Network VLAN

Figure 16: MC-APS MLPPP on Channelized Access Interfaces Example

7750 SR Interface Configuration Guide
MC-APS (the APS circuits terminate on different aggregation routers)
APS protecting MLPPP bundles (bundles are between the BTS and the aggregation
routers but APS operates on the SONET links between the DACS and the aggregation
routers)
APS on channelized access interfaces (OC-3/OC-12 links)
Aggregation
DHCP Relay
Router B
PRS T3/OC-3/
OC-12
VRRP
DACS
T3/OC-3/
OC-12
Aggregation
DHCP Relay
Router A
PDSN, AAA VLAN
OAM VLAN
OAM PDSN, AAA
MLS B
GigE
GigE
OSPF
Area
GigE
GigE
GigE
GigE
MLS A
Hand-off Network
Interface Configuration
GigE
AP
Switch
B
TP
TP
GigE
AP
TP
Switch
TP
A
OSSG143
Page 95