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Interface Numbering Rules
Physical Interface Numbering Rules
On the AR router, interfaces are numbered in the format of slot ID/subcard ID/interface sequence number.
Slot ID
The slot ID identifies the slot in which a card is installed.
- The SRU slot is 0.
- When slots need to be combined into one slot, the larger slot ID is used as the new slot ID. For example, when slot 1 and slot 2 are combined, slot ID 2 is used as the new slot ID.
Subcard ID
The subcard ID specifies the ID of a subcard. The AR router does not support subcards. Therefore, the subcard ID of the AR router is always 0.
Interface sequence number
The interface sequence number indicates the number of each interface on a card.