Juniper JUNOSE 10.0.X PHYSICAL LAYER, Руководство по настройке

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Table 16: Average Data Rate When Installed in All Other Slots on an ERX-1440 Router
Average Data Rate per GE-HDE
Line Module Average Data Rate per GE-8 I/O
Module (> 174 Byte Packets)
Port Combination
125 Mbps per port 125 Mbps per port Ports 1–8
250 Mbps per port 250 Mbps per port Any four ports
500 Mbps per port 500 Mbps per port Any two ports
Managing High-Density Ethernet
The overall data rate for the GE-HDE line module is 2 Gbps; therefore, the I/O module
becomes highly oversubscribed because of the wire rate of the line module. The data
rate of the GE-8 I/O module is limited with larger frames, and the packet rate is
limited with smaller frames.
Currently, flow control using MAC pause frames is disabled on the GE-8 I/O module.
The I/O module does not transmit or receive pause frames.
For more information about high-density Ethernet, see “High-Density Ethernet” on
page 192
.
OC3-2 GE APS I/O Module
ERX-7xx models, ERX-14xx models, and the ERX-310 router all support the OC3-2
GE APS I/O module.
The OC3-2 GE APS I/O module pairs with the OC3/STM1 GE/FE line module to provide
Gigabit Ethernet operation through one line interface and OC3 STM1 ATM operation
through two line interfaces.
The OC3-2 GE APS I/O module uses a range of SFPs to support different optical modes
and cabling distances, and accepts up to three LC-style fiber-optic or copper SFPs.
You can configure only port 2 for Gigabit Ethernet interfaces; port 0 and port 1 are
reserved for OC3/STM1 ATM interfaces.
For more information about configuring OC3/STM-1 ATM interfaces on this I/O
module, see “OC3/STM1 GE/FE Line Module” on page 79.
NOTE: The OC3-2 GE APS I/O module does not support APS in the current release.
ES2-S1 GE-4 IOA
The E120 router and the E320 router support the ES2-S1 GE-4 IOA. Other E-series
routers do not support the ES2-S1 GE-4 IOA.
The ES2-S1 GE-4 IOA pairs with the ES2 4G line module (LM). For more information
about the ES2 4G LM, see “ES2 4G Line Module” on page 80
.
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Gigabit Ethernet I/O Modules and IOAs
JUNOSe 10.0.x Physical Layer Configuration Guide