Virtual Private LAN Services
7750 SR OS Services Guide Page 799
Alcatel-Lucent implementation provides a solution for both PBB ELINE (EPIPE) and ELAN
(IVPLS) services that avoids PBB blackholing when the active ES11-BEB1 link fails. It also
provides a consistent behavior for both service type and for different backbone types: for example,
native Ethernet, MPLS, or a combination. Only MC-LAG is supported initially as the Access-
Multi-homing mechanism.
Solution Description for I-VPLS Over Native PBB Core
The use case described in the previous section is addressed by enhancing the existing native PBB
solution to provide for blackhole avoidance.
The topology depicted in Figure 115 describes the details of the solution for the I-VPLS use case.
Although the native PBB use case is used, the solution works the same for any other PBB
infrastructure: for example, G.8031 Ethernet tunnels, pseudowire/MPLS, or a combination.
Figure 115: PBB Active Topology and Access Multi-Homing
OSSG351
BCB-E BCB-F
P13P16
MC-LAG
P12
Standby
P11
Active
P10
Standby
P9
Active
BMAC
A1
P15
P14
Root
Bridge Table on BCB E
B-MACA1 P13
B-MACC1 P15
Bridge Table on C
ISID 100 CMAC 2 A1 P6
ISID 100 CMAC 1 P12
Bridge Table on A
ISID 100 CMAC 2 P9
ISID 100 CMAC 1 C1 P2
BMAC
D
BMAC
C
C-MAC-1 C-MAC-2
ES1 ES2
BEB
D
BEB
C
P6P8 P2P4
BEB
B
BEB
A
MC-LAG
BMAC
B
BMAC
A
BMAC
C1
BMAC
A1
BMAC
C1
To Next Page
Loading...
Need help?
General
