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Metro Ethernet by Sam Halabi

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P
packet multiplexing.

Data packets coming in from different locations and being multiplexed over the same output wire.

packet-switch capable (PSC).

Systems such as IP/MPLS routers that can switch data packets.

Packet-switch capable (PSC) interfaces.

Interfaces that can recognize packet boundaries and can forward data based on packet headers. This is typical of interfaces on routers and Layer 3 Ethernet switches.

packet switching.

The ability to forward packets in the network based on packet headers or fixed labels.

peak information rate (PIR).

Specifies the maximum rate above the CIR at which traffic is allowed into the network and may get delivered if the network is not congested.

point of local repair (PLR).

The router at which a failed LSP can ...

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