H3C Technologies H3C S12500 Series Switches - Manual (Page 16)

8
Figure 5 Tandem replication
SPBM multicast address
Each SPBM node has a multicast address for each SPB VSI. This multicast address consists of one shortest
path source identifier (SPSource ID) and one I-SID. The I-SID identifies an SPB VSI, and the SPSource ID
identifies the node as a multicast source in the SPB VSI.
By default, ISIS-SPB generates the SPSource ID automatically. You can configure the SPSource ID
manually, but the SPSource ID must be unique throughout the SPBM network.
Figure 6 SPBM multicast address format
Customer
network
Customer
network
BEB 1
BEB 2
SPBM network
BCB
CNP
CNP
B-D
A M-B
EB
1
Da
ta
B-S
A BE
B1 B-V
LA
N 100
I-S
ID
300
Data
Data
Customer
network
BEB 3
CNP
Data
B-DA
M-BEB1
Data
B-SA
BEB1
B-VLAN
100
I-SID
300
B-
DA
M-
BE
B1
Da
ta
B-
SA
BE
B1
B-
VL
AN
10
0
I-S
ID
30
0
B-MAC
M-BEB1
B-VLAN
100
Port
M-BEB2
M-BEB1 100
100
B-MAC B-VLAN Port
M-BEB3 100
B-MAC
M-BEB3
B-VLAN
100
Port
B-MAC
M-BEB2
B-VLAN
100
Port
GE 1/0/1 GE 1/0/1
GE1/0/1
GE
1/
0/3
GE
1/0
/2
GE
1/
0/1
GE
1/0
/1
GE1/0/2，GE1/0/3
GE1/0/1，GE1/0/3
GE1/0/1，GE1/0/2
GE1/0/1
GE1/0/1