23
If double-width network modules are installed, the network module slots are numbered as follows:
• 2 for the lower double-width slot
• 4 for the upper double-width slot
Interface (port) numbers begin at 0 for each interface type, and continue from right to left and from bottom to top.
Figure 7 shows the back panel of the Cisco 3745 with:
• A WIC in each of the three WAN interface card slots
• A single-width network module in each of the four network module slots
• Two AC power supplies
Note The slot number for all WIC interfaces is always 0. (The W0, W1, and W2 slot designations are for physical slot
identification only.) Interfaces in the WICs are numbered from right to left, starting with 0/0 for each interface type,
regardless of which physical slot the WICs are installed in. Some examples are:
–
If physical slot W0 is empty and physical slot W1 contains a 1-port serial WIC, the serial interface in the WIC is
numbered Serial 0/0.
–
If slot W0 contains a 2-port serial WIC and slot W1 contains a 1-port serial WIC, the serial interfaces in physical slot
W0 are numbered Serial 0/0 and Serial 0/1, and the serial interface in physical slot W1 is numbered Serial 0/2.
–
If slot W0 contains a 2-port serial WIC and slot W1 contains a 1-port BRI WIC, the serial interfaces in physical slot
W0 are numbered Serial 0/0 and Serial 0/1, and the BRI interface in physical slot W1 is numbered BRI 0/0.
Figure 7 Cisco 3745 Back Panel
1
Interface card slots
6
Cisco 3700 Compact Flash slot
2
Network modules
7
Auxiliary port
3
Power supply
8
Console port
4
FastEthernet 0/0
9
Power supply
5
FastEthernet 0/1
10
Network modules
63390
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