Datasheet

5-12
Cisco ONS 15454 SDH Reference Manual, R7.0
October 2008
Chapter 5 Ethernet Cards
5.5.1 G1K-4 Card-Level Indicators
Figure 5-4 G1K-4 Faceplate and Block Diagram
The G1K-4 Gigabit Ethernet card provides high-throughput, low-latency transport of Ethernet
encapsulated traffic (IP and other Layer 3 protocols) across a SDH network while providing a greater
degree of reliability through SDH self-healing protection services. Carrier-class Ethernet transport is
achieved by hitless (< 50 ms) performance in the event of any failures or protection switches (such as
1+1 APS, path protection, BLSR, or optical equipment protection) and full provisioning and
manageability, as in SDH service. Full provisioning support is possible via CTC or CTM. Each G1K-4
card performs independently of the other cards in the same shelf.
5.5.1 G1K-4 Card-Level Indicators
The G1K-4 card faceplate has two card-level LED indicators, described in Table 5-9.
Flash DRAM CPU
83649
B
a
c
k
p
l
a
n
e
GBICs
Decode
PLD
Trans-
ceivers
Ethernet
MACs/switch
Mux/
Demux
FPGA
Inter-
face
FPGA
BTC
POS
function
Buffer
memory
Protect/
Main
Rx/Tx
BPIAs
Power
Clock
generation
To FPGA, BTC,
MACs
FAIL
ACT
G1K
RX
1
TX
RX
2
TX
RX
3
TX
RX
4
TX
ACT/LINK
ACT/LINK
ACT/LINK
ACT/LINK