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Table 3. Maximum Switch Port Densities per Router Model
Platform EtherSwitch
HWICs
EtherSwitch Network
Modules
EtherSwitch Service
Modules
Maximum Switch Ports
per Platform
Cisco 2691 – 1 1*, **
●
16 FE
●
1 GE
Cisco 3725 – 2 2*, ***
●
48 FE
●
2 GE
Cisco 3745 – 2 2*, ***
●
72 FE
●
2 GE
Cisco 2801 2 – –
●
16 FE
Cisco 2811 2 1 1*
●
32 FE
●
1 GE
Cisco 2821 2 1 1
●
39 FE
●
1 GE
Cisco 2851 2 1 1
●
64 FE
●
2 GE SFP
Cisco 3825 2 2 2
●
80 FE
●
3 GE (2 SFP)
Cisco 3845 2 2 2
●
112 FE
●
4 GE SFP
* 16-port EtherSwitch service modules only.
** The Cisco 2691 cannot provide inline power to the EtherSwitch service modules.
*** The Cisco 3700 Series routers can support only Cisco pre-standard power, not IEEE 802.3af compliant
power.
Software
Q. Which Cisco IOS Software releases support the EtherSwitch service modules?
A. The EtherSwitch service modules requires two Cisco IOS Software releases, one for the
router and one for the switching module. Table 4 shows the minimum required Cisco IOS
Software combinations.
Table 4. Minimum Cisco IOS Software Requirements
EtherSwitch Service Module Switching Software Image Router Image
NME-16ES-1G-P
NME-X-23ES-1G-P
NME-XD-24ES-1S-P
NME-XD-48ES-2S-P
12.2(25)EZ 12.3(14)T
NME-16ES-1G
NME-X-23ES-1G
12.2(25)EZ 12.4(2)T
Q. Can I upgrade images and feature sets independently on the module and
hosting router?
A. As long as the minimum Cisco IOS Software release requirements are met, you may change
images on either the router or the module without impacting the other. Each component may
be upgraded independently, rebooted, and reloaded without impacting the other component.
Q. Which feature sets are supported?
A. Any feature set in the appropriate Cisco IOS Software release may be used. Both the router
and the EtherSwitch service module usually ship with an IP Base feature set by default. You
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