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Cisco ONS 15530 Configuration Guide and Command Reference
78-14227-01, Cisco IOS Release 12.1(10)EV2
Chapter2 Before You Begin
Interface Naming Conventions
You can press Ctrl-Z or end in any mode to immediately return to privileged EXEC (enable) mode,
instead of entering exit, which returns you to the previous mode.
Interface Naming Conventions
This section describes the interfaces and the interface naming conventions for each type of card
supported by the Cisco ONS 15530.

ESCON Multiplexing Line Card Interfaces

The ESCON multiplexing line card has two types of interfaces:
Esconphy interfaces
Portgroup interfaces
Figure 2-1 shows the interfaces for the ESCON multiplexing line card.
Figure2-1 ESCON Multiplexing Line Card Interfaces

Esconphy Interfaces

The esconphy interfaces are located on the front panel of the ESCON multiplexing line cards. Each
ESCON multiplexing line card has 10 esconphy interfaces. The ESCON multiplexing line card
aggregates the signals from the esconphy interfaces into a single 2.5-Gbps signal and sends it to the
portgroup interface on the backplane side of the card. The e sconphy is an uncolored interface that carries
ESCON physical layer signals. This interface does not ter mina te la yer 2 or l aye r 3 protocol op er ati ons .
The naming convention for the esconphy interfaces on the ESCON multiplexing line card is as follows:
esconphy slot/subcard/port
Front panel Backplane
sconphy 3/0/0
sconphy 3/0/1
sconphy 3/0/9
ESCON
PHYs Encapsulation
engine
portgroup3/0/0
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