Cisco 15327 - Manual (Page 389)

23-9
Ethernet Card Software Feature and Configuration Guide, R7.2
Chapter 23 E-Series and G-Series Ethernet Operation
G-Series Gigabit Ethernet Transponder Mode
Figure 23-6 Card Level Overview of G-Series One-Port Transponder Mode Application
A G-Series card configured as a transponder operates quite differently than a G-Series card configured
for SONET/SDH. In SONET/SDH configurations, the G-Series card receives and transmits Gigabit
Ethernet traffic out the Ethernet ports and GBICs on the front of the card. This Ethernet traffic is
multiplexed on and off the SONET/SDH network through the cross-connect card and the optical card
(
Figure 23-7 ).
Figure 23-7 G-Series in Default SONET/SDH Mode
90914
Server/switch/router
Conventional Gigabit
Ethernet signals
DWDM filter
FAIL
ACT
G1K
RX
1
TX
RX
2
TX
RX
3
TX
RX
4
TX
ACT/LINK
ACT/LINK
ACT/LINK
ACT/LINK
Conventional LX or ZX GBICs
CWDM or DWDM GBICs
Gigabit Ethernet over CWDM or
DWDM GBICs' TX wavelengths
90910
Gigabit Ether
net P
o
rt
s
Gigabit Ethernet 1
G-Series Card
Gigabit Ethernet 2
Gigabit Ethernet 3
Gigabit Ethernet 4
GBICs
GBIC
Tx Port
Rx Port
ONS Node
Cross-Connect
Card
STS-N(c)
Optical Card
Ethernet TDM