Alcatel-Lucent 7750 SR-a4, Руководство по установке, Страница: 152 / 232

2-port 10GigE SFP+ and 12-port 1GigE SFP Combo MDA-a Overview
152 7750 SR-a4 and SR-a8 Installation Guide
Port Line Rate
The 2-port 10GigE SFP+ and 12-port 1GigE SFP Combo MDA-a car is an oversubscribed 25
Gb/s MDA-a. The card’s connection to the IOM is only 25 Gb/s.
If you install both 10GE ports and more that five 1GE ports, the card will be oversubscribed.
If all twelve 1 GE ports and one 10GE port are installed, only 22 Gb/s are used. In this
scenario, the other 10GE port could be used as a standby link, and the card would not be
oversubscribed.
The card is limited to 25 Gb/s, installing the card in a 100 Gb/s slot does not increase the
throughput.
Technical Specifications
Power Consumption
Table 66 lists the power consumption values for the 2-port 10GigE SFP+ and 12-port 1GigE
SFP Combo MDA-a.
Note:
1. Idle: Slots not configured or provisioned
2. Zero Traffic: Traffic load: 0% line rate at 25ºC (reset case)
3. Typical: Traffic load: 50% line rate with Internet mix (IMIX) at 25ºC
Table 65: 2-port 10GigE SFP+ and 12-port 1GigE SFP Combo MDA-a Specifications
Parameter Description
Dimensions (H x W x D) 1.4 x 7.6 x 9.0 in. (3.56 x 19.30 x 22.86 cm)
Weight 2.03 lb (0.92 kg)
Table 66: 2-port 10GigE SFP+ and 12-port 1GigE SFP Combo MDA-a Power
Consumption Values in Watts
Idle
1
Zero Traffic
2
Typical
3
Maximum Power
4
0 38 41 42