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Cisco 12000 Series Router SIP and SPA Hardware Installation Guide
Release 12.0(32)SY1, OL-8831-01, Rev. G6, July 19, 2007
Chapter 1 Overview: Cisco 12000 Series Router SPA Interface Processors
Cisco 12000 SIP-401 Overview
Figure 1-11
shows a Cisco 12000 SIP-401
with 4 SPAs installed. The top leftmost SPA slot is subslot 0;
the top rightmost SPA slot is subslot 1; the bottom leftmost SPA slot is subslot 2; the bottom rightmost
SPA slot is subslot 3.
Figure 1-11 Cisco 12000 SIP-401 with SPAs Installed
SPA Interface Addresses on the Cisco 12000 SIP-401
A Cisco 12000 Series Router identifies a SPA interface address by its SIP slot number, SPA subslot, and
port number on the SPA, in the format
slot/subslot/port
. Subslots and ports are numbered starting from
0, so each Cisco 12000 SIP-401 has four subslots. A 4-port SPA would have ports 0 to 3. For example,
the interface address of the second port on a 4-port SPA located in the first SIP subslot, where the SIP is
inserted into router line card slot 6 is 6/0/1.
1
SPA subslot 0
3
SPA subslot 2
2
SPA subslot 1
4
SPA subslot 3
122066
12000-SIP-400
1
3
2
0
STAT
US
C/A
TX
RX
1
ST
AT
US
SPA-4XT3/E3
0
A/L
C/A
TX
RX
A/L
C/A
TX
RX
2
A/L
C/A
TX
RX
3
A/L
C/A
TX
RX
1
ST
ATUS
SPA-4XT3/E3
0
A/L
C/A
TX
RX
A/L
C/A
TX
RX
2
A/L
C/A
TX
RX
3
A/L
C/A
TX
RX
1
ST
ATUS
SPA-4XT3/E3
0
A/L
C/A
TX
RX
A/L
C/A
TX
RX
2
A/L
C/A
TX
RX
3
A/L
C/A
TX
RX
1
ST
ATUS
SPA-4XT3/E3
0
A/L
C/A
TX
RX
A/L
C/A
TX
RX
2
A/L
C/A
TX
RX
3
A/L
1
2
3
4
