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Cisco ASR 901 10G Series Aggregation Services Router Hardware Installation Guide
OL-28105-02
Chapter 1 Introduction
Router Interface Numbering
Cisco ASR 901 10G Router
Each network interface on a Cisco ASR 901 10G 10G router is identified by a slot number and a port
number, explained in this sequence:
• Logical slot numbers starts from 0 for all built-in interfaces. The numbering format is Interface
type Slot number/Interface number.
Interface (port) numbers begin at logical 0 for each interface
type.
• Logical interface numbering for 10G SFP+ ports runs from 0/0 through 0/1. Ports are numbered
bottom to top.
• Logical interface numbering for T1/E1 ports on the TDM interface module runs from 0/0 through
0/7. Ports are numbered bottom to top, left to right.
• Logical interface numbering for the built-in ethernet ports runs from g0/0 through g0/3, the combo
ports run from g0/4 to g0/7 and the SFP ports run from g0/8 through g0/11. The GE ports are
numbered bottom to top, left to right.
Figure 1-5 Cisco ASR 90110G Router Port Numbers
8
13
1
2
3
12
5
9
11
334515
6
7
4
10
1 ToD port 7 BITS port
2 Management port 8 MINI-Coax Connector (1PPS)
3 8 GE ports 9 MINI-Coax Connector (10MHZ)