Transceiver-Based Gigabit Ethernet Cards
2-10
SmartEdge 1200 Router Hardware Guide
These traffic cards are described in the following sections:
• Gigabit Ethernet and Advanced Gigabit Ethernet
Gigabit Ethernet and Advanced Gigabit Ethernet
The Gigabit Ethernet and Advanced Gigabit Ethernet cards are the first and second versions of the 4-port
Gigabit Ethernet card, respectively. Each card provides four optical Ethernet ports; a low-density version
of the card provides two ports that are enabled through software entitlement. The Gigabit Ethernet card
supports 256 MB of memory for each Packet Processing ASIC (PPA) on the card; the Advanced version
supports 512 MB for each PPA. The following GBIC transceivers are supported on any port on either card:
• 1000Base-SX—Short reach
• 1000Base-LX—Long reach
• 1000Base-LX70—Extended reach
• 1000Base-T—Copper
Either card can have any combination of the listed types of GBIC transceivers installed.
Table 2-6 lists the specifications for the first and second versions of the Gigabit Ethernet cards for the
various GBIC transceivers.
Caution
Risk of data loss. You can corrupt the system if you attempt to install transceivers (GBICs,
SFPs, or XFPs) that are not purchased from Redback
®
because these items have not been
tested with the SmartEdge router. To reduce the risk, install only the transceivers purchased
from Redback.
Table 2-6
Gigabit Ethernet Card Specifications, First and Second Versions
Specification
SX
LX
LX70
TX
1
1. The TX GBIC transceiver does not comply with the Network Equipment Building Standards (NEBS) electrostatic discharge (ESD) requirement.
Number of ports
2
2. Each optical port has separate connectors for the transmit (Tx) and receive (Rx) circuits.
2 or 4
2 or 4
2 or 4
2 or 4
Speed
1 Gbps
1 Gbps
1 Gbps
1 Gbps
Protection
None
None
None
None
Interface
1000Base-SX
1000Base-LX
1000Base-LX70
1000Base-T
Line code
8B/10B
8B/10B
8B/10B
PAM-5
Negotiate flow control
3
3. The extent of the support for flow control depends on the release of the SmartEdge OS.
Yes
Yes
Yes
Yes
Transceiver type
GBIC
GBIC
GBIC
GBIC
Compliance
IEEE 802.3, 802.3z
IEEE 802.3, 802.3z
IEEE 802.3, 802.3z
IEEE 802.3, 802.3ab,
802.3z
