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Port Numbering
On the 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 ID is 0.
- When slots are combined into one slot, the greater 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 router does not support subcards. Therefore, the subcard ID of the router is always 0.
Interface sequence number
The interface sequence number indicates the number of each interface on a card.
- If there is only one row of interfaces on a card, the interfaces are numbered from left to right starting with 0.
- If there are two rows of interfaces on a card, the interfaces are numbered from bottom to top and left to right starting with 0.
- If there is only one row of interfaces on a card, the interfaces are numbered from left to right starting with 0.
