Ports
Supported APS MDA/Port Combinations
The following table displays examples of the port types that can be paired to provide APS
protection. Both ports must be the same type and must be configured at the same speed.
Table 23: MDA/Port Type Pairing for APS
MDA Type
Unchannelized
SONET/SDH
For example: m16-
oc12/3-sfp
For example: m4-
atmoc12/3-sfp
Circuit Emulation
For example: m4-
choc3-ces-sfp
Channelized Any
Service Any Port
For example: m1-
choc12-as-sfp
For example, an APS group can be comprised of a pair of ports where each port is on one of the
two following MDAs:
•
•
For example, an APS group can not be comprised of a pair of ports where one port is on an m16-
oc12/3-sfp and the other port is on an m1-choc12-as-sfp.
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Unchannelized
SONET/SDH
(POS)
For example:
m16-oc12/3-sfp
(POS)
Supported
ATM
(CES)
(ASAP)
m16-atmoc3-sfp
m4-atmoc12/3-sfp (port in oc3 mode)
ATM
For example:
m4-atmoc12/3-
sfp
m4-choc3-ces-
Supported
7750 SR OS Interface Configuration Guide
Channelized
Circuit
Any Service
Emulation
Any Port
(CES)
(ASAP)
For example:
For example:
m1-choc12-as-
sfp
Supported
Supported
sfp