Does the license of an S series modular switch affect the numbers of PPPoE users and APs connected to the X1E series card

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The S7700, S9700, and S12700 among S series modular switches:
- Support PPPoE in V200R005 and later versions.
- Support X1E series cards functioning as WLAN ACs and allowing access of APs in V200R005 and later versions.
For the maximum numbers of of PPPoE users and APs supported by the X1E series cards on the S7700, S9700, and S12700, contact Huawei engineers through Huawei's customer service hotline.

Other related questions:
Are services affected after a CSS composed of S series modular switches splits
When a CSS splits, the two devices work independently, and inter-chassis services are interrupted. If MAD is configured, the physical interfaces of one device will be shut down, and services on the interfaces are interrupted.

Does the installation of a stack card in an S series switch affect functions of the front card
The stack card and extended rear channel card of a switch use the same slot, and they cannot be installed simultaneously. When a stack card is installed, no extended card can be installed in the switch. Therefore, when a stack card is installed in a switch, only two front interfaces of the switch are available for the front card.

What is CSS card's bandwidth on S series modular switches
CSS cards such as ES02VSTSA (S7700) and LE0D0VSTSA00 (S9300) provide four 16GE optical interfaces for data transmission and line-speed switching, so a CSS card provides 64 Gbit/s bandwidth (4*16 Gbit/s). CSS cards such as EH1D2VS08000 (S9700&S12700) provide eight 16GE optical interfaces for data transmission and line-speed switching, so a CSS card provides 80 Gbit/s bandwidth (8*10 Gbit/s).

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