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The ES2-S1 GE-4 IOA is offered in a halfheight size that enables you to configure it
in one of two IOA bays that are available for each slot. You can install the ES2-S1
GE-4 IOA in only one of the IOA bays per slot.For more information about installing
IOAs, see the E120 and E320 Hardware Guide.
The ES2-S1 GE-4 IOA has four ports. The IOA can use either fiber-optic or copper
SFPs. The IOA accepts up to four pairs (Tx/Rx) of LC-style fiber-optic connectors that
support different optical modes and cabling distances. Alternatively, the IOA supports
up to eight pairs of copper SFPs.
The ES2-S1 GE-4 IOA does not support port redundancy.
ES2-S1 GE-8 IOA
The E120 and E320 routers support the ES2-S1 GE-8 IOA. Other E Series routers do
not support the ES2-S1 GE-8 IOA.
The ES2-S1 GE-8 IOA is offered in a halfheight size that enables you to configure it
in either of the two IOA bays that are available for each slot. You can install the
ES2-S1 GE-8 IOA in both IOA bays. For more information about installing IOAs, see
the E120 and E320 Hardware Guide.
The ES2-S1 GE-8 IOA has eight ports. The IOA can use either fiber-optic or copper
SFPs. The IOA accepts up to four pairs (Tx/Rx) of LC-style fiber-optic connectors that
support different optical modes and cabling distances. Alternatively, the IOA supports
up to eight pairs of copper SFPs.
NOTE: The ES2-S1 GE-8 IOA has a logical port, numbered port 8, that is reserved for
the hardware multicast packet replication feature. For more information, see JUNOSe
Multicast Routing Configuration Guide .
The ES2-S1 GE-8 IOA pairs with either the ES2 4G line module (LM), ES2 10G LM,
and the ES2 10G ADV LM to provide access services.
ES2 4G LM Combination
For more information about the ES2 4G LM, see "ES2 4G Line Module" on page 80.
When paired with the ES2 4G LM, you can combine the ES2-S1 GE-8 IOA in a slot
with one of the following IOA types:
Bandwidth and Line Rate Considerations
Table 16 on page 184 lists the average data rate on the ES2-S1 GE-8 IOA when installed
in E120 and E320 routers with one ES2 4G LM installed.
ES2-S1 OC3-8 ATM IOA
ES2-S1 OC12-2 ATM IOA
ES2-S1 OC12-2 POS IOA
Chapter 5: Configuring Ethernet Interfaces
Gigabit Ethernet I/O Modules and IOAs
183
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