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# GE-4 IOA

> IOA label | ES2-S1 GE-4 IOA
> Number of IOA ports | 4
> Software release | First supported: 7.0.1
> Description | 30 W Half-height module See Module and Slot Combinations for more information on combining IOAs in a slot. Uses a range of small form-factor pluggable (SFP) transceivers to support different modes and cable lengths. Uses either optical or copper SFPs. The optical transceivers are 1000Base-SX, 1000Base-LX, and 1000Base-ZX compliant. The copper transceivers are 1000Base-T compliant. Single-strand SFPs can be used. These SFPs work in pairs and require a matching SFP at the opposite end of the Ethernet connection. For example, an SFP rated at TX 1310, RX 1550 must be paired with an SFP rated TX 1550, RX 1310 with the same maximum operating range. See the following corresponding table (Single-strand SFPs Pairing) for more information.
> Capability | Ethernet (IEEE 802.3x) 1000Base-SX/LX/ZX
> Software features | See Ethernet IOAs for information about the layer 2 and layer 3 protocols and applications that this module combination supports.
> Model compatibility | E320 router E120 router
> Line module compatibility | ES2 4G LM
> SRP module compatibility | SRP-100 SRP-120 SRP-320
> Line module redundancy compatibility | Can be paired with an ES2 4G LM. Must be installed in the same redundancy group as an ES2 4G LM and ES2–S1 REDUND IOA combination.
> Port redundancy support | Not applicable
> Cables and connectors (copper SFP) | Maximum range is 100 meters on CAT5 cable.
> Cables and connectors (multimode [SX] ) | Up to four LC-style fiber-optic connectors Transmit power: min: –9.5 dBm max: –4 dBm Receive input power: min: –20 dBm max: 0 dBm See the following corresponding table (SX Fiber Optic Cabling) for cabling requirements. See E120 and E320 Hardware Guide, Chapter 5, Cabling the Router for more information.
> Cables and connectors (single-mode [LX]) | Up to four LC-style fiber-optic connectors Transmit power: min: –9.5 dBm max: –3 dBm Receive input power: min: –20 dBm max: –3 dBm See the following corresponding table (LX Fiber Optic Cabling) for cabling requirements. See E120 and E320 Hardware Guide, Chapter 5, Cabling the Router for more information.
> Cables and connectors (single-mode LX40) | Up to four LC-style fiber-optic connectors Transmit power: min: –4.5 dBm max: 0 dBm Receive input power: min: –35 dBm max: –22.5 dBm See the following corresponding table (LX40 Fiber Optic Cabling) for cabling requirements. See E120 and E320 Hardware Guide, Chapter 5, Cabling the Router for more information.
> Cables and connectors (single-mode [ZX] ) | Up to four LC-style fiber-optic connectors Transmit power: min: –2 dBm max: 3 dBm Receive input power: min: –22 dBm max: –3 dBm See the following corresponding table (ZX Fiber Optic Cabling) for cabling requirements. See E120 and E320 Hardware Guide, Chapter 5, Cabling the Router for more information.
> LEDs | When lit, LED indicates: OK (green)—Physical link is connected properly and is functioning properly FAIL (red)—Failure detected Port LEDs: LK (green)—Ethernet link is up ACT (green)—Blinks when there is Ethernet traffic being received
> Alarms, errors, and events | See Monitoring Ethernet Interfaces in JUNOSe Physical Layer Configuration Guide, Chapter 5, Configuring Ethernet Interfaces.

> Table 2: SX Fiber Optic Cabling

> Fiber Type | Minimal Modal Bandwidth at 850 nm (MHz*km) | Maximum Operating Range (meters)
> 62.5 microns | 160 | 220 (656.17 ft)
> | 200 | 275 (902.23 ft)
> 50 microns | 400 | 500 (1640.42 ft)
> | 500 | 550 (1804.46 ft)

> Table 3: LX Fiber Optic Cabling

> Fiber Type | Nominal Wavelength (nm) | Maximum Operating Range (kilometers)
> 9 microns | 1310 | 10 (6.2 miles)

> Table 4: LX40 Fiber Optic Cabling

> Fiber Type | Nominal Wavelength (nm) | Maximum Operating Range (kilometers)
> 9 microns | 1310 | 40 (24.85 miles)

> Table 5: ZX Fiber Optic Cabling

> Fiber Type | Nominal Wavelength (nm) | Maximum Operating Range (kilometers)
> 10 microns | 1550 | 70 (43.5 miles)

> Table 6: Single-strand SFPs Pairing

> Fiber Type | Nominal Wavelength (nm) | Maximum Operating Range (kilometers)
> 9 microns | TX 1310, RX 1550 Pairs with TX 1550 / RX 1310 | 10 (6.2 miles), matching SFP must have the same operating range
> 9 microns | TX 1550 / RX 1310 Pairs with TX 1310, RX 1550 | 10 (6.2 miles), matching SFP must have the same operating range
> 9 microns | TX 1310, RX 1490 Pairs with TX 1490 / RX 1310 | 10 (6.2 miles), matching SFP must have the same operating range
> 9 microns | TX 1490 / RX 1310 Pairs with TX 1310, RX 1490 | 10 (6.2 miles), matching SFP must have the same operating range
> 9 microns | TX 1310, RX 1550 Pairs with TX 1550 / RX 1310 | 40 (24.85 miles), matching SFP must have the same operating range
> 9 microns | TX 1550, RX 1310 Pairs with TX 1310 / RX 1550 | 40 (24.85 miles), matching SFP must have the same operating range

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