Specifications

15
Cisco ONS 15454 Product Overview, R3.3
May 2002
Cisco ONS 15454 Product Overview
Card Protection
Figure 7 Gigabit interface converter
G1000-4 Card
Like the E1000-2 and E1000-2-G cards, the G1000-4 card provides
IEEE-compliant, 1000 Mbps ports for full-duplex operation and requires a GBIC
as its optical interface. However, the G1000-4 has four ports rather than two and
requires the XC10G as its cross-connect card. The additional ports give the ONS
15454 a practical limit of 40 Gigabit Ethernet ports per node. The G1000-4
operates on layer 1 and is used only for point-to-point circuits. OC-48 is the
maximum bandwidth on each G1000-4 card.
Card Protection
The ONS 15454 provides 1:1 and 1:N electrical protection and 1+1 optical
protection methods. This section describes the protection options and explains
protection switching in the ONS 15454. For a description of Ethernet protection,
see the “Spanning Tree Protocol” section on page 32.
11825
Receiver Transmitter