What is difference between using SIP/SPA vs. Line card?

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Oct 21st, 2008
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When using SPA with SIP for implementing Router Interfaces we can reduce cost of investments, but what can be lost when using this model in comparison with using Line Cards.

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Edison Ortiz Tue, 10/21/2008 - 07:32
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I'm assuming you are only referring to the GigabitEthernet SPAs and not the POS/ATM SPAs since those won't be a fair comparison w/ regular line cards.

As for the Giga SPAs, the main difference is the superior implementation of QoS in this hardware. You are very limited w/ QoS while using the regular line cards since they rely on the PFC QoS.

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