Figure 5-4 Relationships between cards on the AR3260
Power
Fan
Backplane
SRU
Service card
Service card
5.1.2 Interface Numbering
This section describes the interface numbering scheme on the AR routers.
On the AR routers, interfaces are numbered in the format of slot ID/subcard ID/interface
sequence number.
l Slot ID
The slot ID specifies the ID of the slot where a card resides.
– The SRU of the AR1200 and 2220 is integrated with the chassis, so the slot ID is fixed
as 0.
– When slots need to be 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.
l Subcard ID
The subcard ID specifies the ID of a subcard. The cards of AR routers series routers do not
support subcards. Therefore, the subcard ID of the AR routers is fixed as 0.
l Interface sequence number
The interface sequence number indicates the number of each interface on a card.
– There is only one row of interfaces on the interface card. These interfaces are numbered
from left to right starting with 0.
– There are two rows of interfaces on the interface card. These interfaces are numbered
from bottom to top and left to right starting with 0.
Huawei AR1200&2200&3200 Series Enterprise Routers
Hardware Description 5 Cards
Issue 03 (2012-04-20) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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