Ext; Power Considerations - Cisco CISCO2650 - 2650 Router Hardware Installation Manual

Requirements for Installing Two Ethernet Switch Network Modules in a Single Chassis
Figure 17-1 16-Port Ethernet Switch Network Module
NM-
ESW-
16
Figure 17-2 36-Port Ethernet Switch Network Module
NMD-
ESW-
36
Requirements for Installing Two Ethernet Switch Network
Modules in a Single Chassis
A maximum of two Ethernet switch network modules can be installed in a single chassis. If two Ethernet
switch network modules of any type are installed in the same chassis, the following configuration
requirements must be met:
•
•
•
Without this configuration and connection, duplications will occur in the VLAN databases, and
unexpected packet handling may occur.

Power Considerations

The Ethernet switch network module supports inline powering of IP telephones with –48-V power. This
allows IP phones to be plugged into the standard RJ-45 jack and be powered from this source rather than
having a separate plug into an AC wall outlet. The Ethernet switch network module requires delivery of
–48-V power to the network module in order to provide inline powering of IP telephones.
Cisco 2800 series, Cisco 3700 series, and Cisco 3800 series routers supply –48 V power internally (with
AC-IP power supplies) to the Ethernet switch service modules. To support Cisco 2600 series and Cisco
3600 series routers, which do not supply –48-V internal power, the network module has an external
connector for connection to an external –48-V power supply.
The Ethernet switch network module distributes the –48-V power to each of the Ethernet ports that are
configured for line power. Each port can be independently configured for line power.
Cisco Network Modules Hardware Installation Guide
17-2
FastEthernet Ports
15x
7x
15x 7x 14x 6x 13x 5x 12x
35x
GE1
10/100/1000
17x
Base-Tx
35x 17x 34x 16x 33x 15x 32x 14x 31x 13x
Both Ethernet switch network modules must have an optional Gigabit Ethernet expansion board
installed.
An Ethernet crossover cable is connected to the two Ethernet switch network modules using the
optional Gigabit Ethernet expansion board ports.
Intrachassis stacking for the the optional Gigabit Ethernet expansion board ports is configured. For
information about intrachassis stacking configuration, see the
Module for Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 series
Chapter 17
4x 11x 3x 10x 2x 9x 1x 8x 0x
FastEthernet Ports
30x 12x 29x 11x 28x 10x 27x 9x 26x 8x 25x 17
Connecting Ethernet Switch Network Modules
8x

Ext

Pwr
-48V GE
10/100/
1000
Base-Tx
EN
0x
24x 6x 23x 5x 22x 4x 21x 3x 20x 2x 19x 1x
16- and 36-Port Ethernet Switch
feature document.
18x
Ext
Pwr
GE0
-48V
10/100/
1000
Base-Tx
EN
0x
18x 0x
OL-2485-20