RPR and SRP (formerly called DPT) are Layer 2 MAC encapsulation protocols providing multiple access over Sonet. They virtually emulate a LAN environment.On point-to-point Sonet links the choice of Layer 2 encapsulation is HDLC, PPP, Frame Relay. ATM ...
Cisco has a wide range of DWDM products in its COMET portfolio for various applications (metropolitan, long-haul, etc.), with a channel count from 32 to more than 120 wavelengths.You can find a comprehensive literature on all Cisco DWDM products at t...
Yes, we need to take into account the maximum and minimum permitted optical power levels (power budget) at the input of the receiver. At the transmit side LR optics usually have 1550 nm laser, while IR usually has 1310 nm, though this is not a strict...
