342-86400-498PS
Issue 1.2
April 2012
Page 22
Copyright
GE Multilin Inc. 2010-2012
Compatibility with ETHER-100
The ETHER-1000 unit can exchange traffic with remote ETHER-100 units.
Along each TDM pipe, an independent ETHER network topology, which may
include a mixture of ETHER-1000 and ETHER-100 units, can be created.
SONET
Ring #2
SONET Linear Network
SONET Ring #1
E100
E1000
E100
E100
E100
E100
E100
E100
E100
E100
E100
E100
E100
E100
E100
E100
E1000
E1000
E100
E100
E100
TDM Pipe #1
TDM Pipe #2
TDM Pipe #3
E100
E100
TDM Pipe #4
SONET
Ring #2
SONET Linear Network
SONET Ring #1
E100
E1000
E100
E100
E100
E100
E100
E100
E100
E100
E100
E100
E100
E100
E100
E100
E1000
E1000
E100
E100
E100
TDM Pipe #1
TDM Pipe #2
TDM Pipe #3
E100
E100
TDM Pipe #4
Figure 9:
Example of a mixed ETHER-1000 / ETHER-100 system
CAUTION
ETHER-100 unit is NOT transparent for frames longer than 1536 bytes.
(ETHER-1000 unit is transparent for frames that are as long as 1632 bytes.)
ETHER-1000 unit allows multiple instances of the same MAC address in the
MAC address table (if on different D-PVLANs), while the ETHER-100 unit does
not. Therefore, any mixed ETHER-1000/ETHER-100 systems where this
ETHER-1000 feature is to be utilized shall be carefully engineered.
ETHER-100 unit does NOT support automatic segregation of selected
EtherType traffic and its placement into top priority queues. Therefore, in
mixed ETHER-1000/ETHER-100 systems where this ETHER-
1000 unit’s feature
is to be used, careful system engineering shall ensure that the top priority
queues are solely used for selected EtherType traffic (see Section 5 for more
details).