Alcatel-Lucent 9500 MXC - Page 461

9500 MXC User Manual
3DB 23063 ADAA - Rev 004 July 2007 Vol. IV-7-71
• If DAC GEs are configured for the same priority value, or left as default,
the DAC GE with the lowest MAC address becomes the root switch.
Figure 7-25. Example Ring with RWPR Settings
12.
Module Name. Enter a name (optional - recommended) for the module by
right-clicking in the relevant DATA module in the System Summary screen,
selecting Rename, and typing. The default name is ‘unnamed’.
13.
Priority Mapping: Click the Priority Mapping tag to view and select the
priority mode and associated mapping. Refer to Figure 7-26. DAC GE has a
four level (two bit) priority field, meaning the 8 priority levels of 802.1p
tagging or the 63 levels of DiffServ are mapped into 4 levels over a DAC GE
link.
Root switch
C1
C2
Root port
Alternate port
Designated port
Priority = 50
Bridge Priority 300
Cost = 300
Priority = 50
Cost = 300
Priority = 50
Cost = 300
Priority = 50
Cost = 300
Priority = 50
Cost = 300
Priority = 50
Cost = 300
Priority = 100
Cost = 500
Priority = 100
Cost = 500
Edge port
Blocked
DAC GE
P1
C1
C2
Bridge Priority 200
DAC GE
P1
A
ttached data
network
C1
C2
Bridge Priority 100
DAC GE
P1
Attached data
network
Attached data
network
Attached core
data network
C1
C2
Bridge Priority 10
DAC GE
P1
150 Mbps
150 Mbps
150 Mbps
150 Mbps