Interface Numbering
Figure 17
Rear Panel of the Cisco 2851 Router
2
1
H
W
A= ACT
A= FDX
I
S= SPEED
A= LINK
C
3
GE 0/1
GE 0/0
A
A
F
F
H
S
S
W
I
L
L
C
1
PVDM2 PVDM1 PVDM0
AIM1
AIM0
1
Gigabit Ethernet port 0/0
1
2
Gigabit Ethernet port 0/1
3
High-speed WAN interface card slot 0
High-speed WAN interface card slot 1
4
High-speed WAN interface card slot 2
5
1. The network module slot is compatible with Cisco network modules of type NM (network module), NME (network module enhanced), NME-X
(enhanced extended), NMD (double-wide), and NME-XD (enhanced extended double-wide).
Interface Numbering
Table 7
interface numbering on Cisco 2811, Cisco 2821, and Cisco 2851 series routers.
The interface numbering on Cisco 2800 series routers is different from the numbering on Cisco 2600
Note
series routers.
On the Cisco 2801 router, the numbering format for slots is interface type 0/slot/port. "0" indicates slots
Note
that are built into the chassis of a router. On the Cisco 2801 router, all slots begin with "0," because all
slots are built into the chassis. Note that this is different from the Cisco 2811, Cisco 2821, and
Cisco 2851 routers. On these routers, some slots are built into the chassis and have slot numbers that
begin with "0". However, it is possible to have other slots that are part of a network module or an
extension voice module. Those slots have slot numbers that begin with "1" or "2," respectively.
Overview of Cisco 2800 Series Routers
16
6
4
5
8
summarizes the interface numbering on a Cisco 2801 series router.
3
H
W
I
C
2
H
W
I
C
0
High-speed WAN interface card slot 3
6
7
Extension voice module (EVM) slot
8
Network module enhanced (NME) slot
Screw holes for ground lug
9
7
1
Table 8
summarizes the
EVM 2 ONLY
9
OL-5783-01
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