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SFP
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Small form-factor pluggable optical transceiver. A type of fiber optic receptacle device that mounts flush with the front panel to provide network connectivity.
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single height
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Describes the dimension of a SPA that occupies a single SIP subslot, or half of the SIP.
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SIP
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SPA interface processor. A SIP is a platform-specific carrier card that inserts into a router slot like a line card. A SIP can hold one or more SPAs in its subslots, depending on the SIP type. The SPA provides the network interface. The SIP provides the connection between the route processor (RP) and the SPA.
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SPA
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Shared port adapter. A SPA is a modular, platform-independent port adapter that inserts into a subslot of a compatible SIP carrier card to provide network connectivity and increased interface port density. The SPA provides the interface between the network and the SIP.
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subslot
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Secondary slot on a SIP where a SPA is installed. The primary slot is the chassis slot on the router.
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