Cisco ASR 903 Hardware Installation Guide

The figure below shows interface numbering in a Cisco ASR 903 Router.
Figure 41: Cisco ASR 903 Router Slot Numbers
RSP slot 11
RSP slot 02
Fan tray slot3
Power supply slot 14
Power supply slot 05
Interface module slot 06
Interface module slot 17
Interface module slot 28
Interface module slot 39
Interface module slot 410
Interface module slot 511
Following is an explanation of the slot or port numbering:
•
The numbering format is Interface type slot or interface number. Interface (port) numbers begin at
logical 0 for each interface type.
•
Interface module slots are numbered from bottom to top, with logical interfaces on each module numbered
from left to right. Interfaces are hard-wired. Therefore, port 0 is always logical interface 0/0, port 1 is
always logical interface 0/1, and so on.
Cisco ASR 903 Aggregation Services Router Hardware Installation Guide
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Cisco ASR 903 Router Overview
Interface Numbering

Cisco ASR 903 Specifications

General

Brand	Cisco
Model	ASR 903
Category	Network Router
Language	English