Specifications

1-14
Cisco ONS 15530 Planning Guide
OL-7708-01
Chapter 1 System Overview
System Components
Support for FC Port Types
The 4-port 1-Gbps/2-Gbps FC aggregation card supports the following FC port types, with or without
the buffer credit distance extension feature enabled:
• B_port—bridge port
• E_port—expansion port
• F_port—fabric port
• N_port—node port
• TE_port—trunking E_port (Cisco MDS 9000 Family systems only)
Note All of the above port topologies, except for TE_port, are point-to-point in the FC specifications.
Examples of valid topologies where you can place a Cisco ONS 15530 shelf, which has an 4-port
1-Gbps/2-Gbps FC aggregation card, in the middle to extend distance include the following:
• E_Port <--> E_Port
• F_Port <--> N_Port
• N_Port <--> N_Port
• B_Port <--> B_Port
• TE_Port <--> TE_Port
The arbitrated loop topology is not supported by the 4-port 1-Gbps/2-Gbps FC aggregation card. The
arbitrated loop port types not supported include:
• NL_port—node loop port
• FL_port—fabric loop port
• EL_port—extension loop port
Note Any combination of these arbitrated port types are not supported.
8-Port FC/GE Aggregation Cards
The Cisco ONS 15530 supports a line card specifically for FC (Fibre Channel), FICON (Fibre
Connection), GE (Gigabit Ethernet), ISC-1 (InterSystem Channel) links compatibility mode, and 1-Gbps
ISC-3 peer mode traffic. The 8-port Fibre Channel/Gigabit Ethernet aggregation card accepts up to eight
SFP (small form-factor pluggable) optics for client traffic. Each SFP optic supports FC, FICON, GE, or
ISC, depending on how the interface is configured in the CLI.
The 8-port FC/GE aggregation card converts client signals from two adjacent port pairs (0–1, 2–3, 4–5,
or 6–7) from optical form to electrical and then aggregates them into four 2.5-Gbps signals. These
aggregated signals pass through the backplane and the switch fabric on the active CPU switch module
to a 2.5-Gbps ITU trunk card, a 10-Gbps ITU trunk card, or a 10-Gbps uplink card. The cross
connections between the two cards through the backplane and switch fabrics is configured using the CLI.
The 8-port FC/GE aggregation card has redundant connections over the backplane to the switch fabrics
on the active and standby CPU switch modules.
The 8-port FC/GE aggregation card provides buffer credit functionality for Fibre Channel traffic and
end-to-end autonegotiation for Gigabit Ethernet traffic.