What are the differences between the E series, F series, and S series LPUs of the S7700&S9700

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S7700&S9700 LPUs are classified into three series: E series, F series, and S series.
The E series is the enhanced series, which supports Multiprotocol Label Switching (MPLS) and extension of routing, ACL, as well as MAC address entries. The E series consists of the EA, EC, ED, and EE LPUs.
The F series is the ordinary series, and supports MPLS but not extension of MAC address entries. The F series consists of the FA and FC LPUs.
The S series is the standard series and does not support extension of MAC address entries. The S series consists of the SA and SC LPUs. The SA LPUs do not support MPLS, whereas the SC LPUs support MPLS.

NOTE:
A, C, and D in the LPU names indicate the number of MAC address entries supported by the LPUs:
A: 32K MAC addresses
C: 128K MAC addresses
D: 512K MAC addresses

Other related questions:
What is the temperature of the S7700&S9700 in different situations
The temperature range of the S7700&S9700 is as follows: Operating temperature: 0°C to 45°C Storage temperature: -40°C to +70°C You can run the display temperature command to view the temperature of the S7700&S9700 card. If no alarm is generated, the device is working normally and the temperature is within the allowed range. NOTE: The set transceiver temperature threshold command sets the temperature threshold for adjusting the fan speed. When the temperature of an optical module exceeds the upper threshold, the fan speed is increased. When the temperature of an optical module falls below the lower threshold, the fan speed is reduced. The display transceiver temperature threshold command displays the upper and lower temperature thresholds for adjusting the fan speed.

LPU of S series switches
The LPUs are classified into E series Ethernet cards, F series Ethernet cards, S series Ethernet cards, B series Ethernet cards, and X series Ethernet cards. - The E series is the enhanced series that supports MPLS and extension of routing, ACL, and MAC address entries. The E series consists of EA, EC, ED, and EE LPUs. - The F series is the ordinary series that supports MPLS but not extension of MAC address entries. The F series consists of FA and FC LPUs. - The S series is the standard series that does not support extension of MAC address entries. The S series consists of SA and SC LPUs. MPLS is supported by the SC card, but not the SA card. - The B series is the large buffer series. - The X series is the agile series. The X series consists of X1E, X2E, X2S and X2H LPUs.

Adaptation problem of cards on S series switches
Most of the cards of different switch models are not interchangeable. You can use Hardware Query Tool to query card models supported by specified switches.

The difference between E-trunk and Eth-Trunk on S series switches
For S series switches (except the S1700): Eth-Trunk, also called link aggregation, bundles multiple physical links to form a logical link to increase link bandwidth. The bundled links can enhance link reliability through mutual backup. E-Trunk (Enhanced Trunk), developed from LACP (a link aggregation protocol for a single device), is a mechanism that implements link aggregation among multiple devices. E-Trunk achieves device-level link reliability, instead of card-level link reliability previously achieved by LACP.

Are LPUs for different series of modular switches interchangeable
Most of the cards of different switches are not interchangeable. You can use Hardware Query Tool to query cards for specified models.

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