Interface numbering of cards on S series switches

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The numbering rules for interfaces are as follows.

Before the clustering function is enabled, interfaces on the switch are numbered in the format of slot ID/subcard ID/interface sequence number.
After the clustering function is enabled, interfaces on the switch are numbered in the format of chassis ID/slot ID/subcard ID/interface sequence number.
- Chassis ID: indicates the ID of a member switch in the CSS system, with the value of 1 or 2.
- Slot ID: indicates the slot where a card is installed.
- Subcard ID: indicates the ID of a subcard on the LPU.
- Interface sequence number: indicates the number of each interface on the card.

For example, if a card is installed in slot 3 of a switch, the fifth interface from left to right and top to bottom on the card is numbered 3/0/4. If the clustering function is enabled and the cluster ID is 1, the interface is numbered 1/3/0/4.
Particularly, a 40GE interface can be split into four 10GE interfaces. Then, the numbering rules for interfaces are as follows:
If the 40GE interface is numbered 40GE x/y/0/n, the four converted 10GE interfaces are numbered 10GE x/y/1/(4n+z).
- x: indicates the chassis ID, that is, the cluster ID. The value exists only in a cluster.
- y: indicates the slot number of a card.
- n: indicates the sequence number of a 40GE interface, starting from 0.
- z: indicates the interface location. The value is in the range from 0 to 3.
For example, before the clustering function is enabled, a 40GE interface is numbered 40GE1/0/1. The four 10GE interfaces are numbered 10GE1/1/4, 10GE1/1/5, 10GE1/1/6, and 10GE1/1/7.

Other related questions:
The maximum number of VTY user interfaces on S series switches
S series switches (except S1700) support the maximum number of VTY user interfaces: The switch defaults up to 5 VTY users online at the same time. You can use the user-interface maximum-vty command to configure up to 15 VTY users to be online at the same time. When the maximum number of VTY user interfaces is 0, no user (including network management users) can log in to the switch.

Specifications of cards on S series switches
For specifications of subcards and cards on S series switches, refer to Cards in the corresponding hardware description manual. For S5700 hardware description, click S5700 Hardware Description. For S6700 hardware description, click S6700 Hardware Description. For S9300&S9300E hardware description, click S9300&S9300E Hardware Description. For S7700 hardware description, click S7700 Hardware Description. For S9700 hardware description, click S9700 Hardware Description. For S12700 hardware description, click S12700 Hardware Description.

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.

Card models supported by S series switches
For card models supported by S series switches, you can use Hardware Query Tool to query details or see "Cards" in the Hardware Description. For the hardware description of the S9300 and S9300E, see S9300&S9300E Hardware Description. For the hardware description of the S7700, see S7700 Hardware Description. For the hardware description of the S9700, see S9700 Hardware Description. For the hardware description of the S12700, see S12700 Hardware Description.

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