Datasheet

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NETWORK MODULES
Q. What is an NME?
A. The enhanced network module (NME) slot is the next generation of the network module slot available for the Cisco 2800 and 3800 series.
It is available in three form factors↓single-wide (NME), extra-wide (NME-X), and extra-double-wide (NME-XD). The NME offers additional
performance and improved density over the existing network modules. NME slots provide IEEE 802.3af-compliant PoE and Cisco inline power
for IP phones and Cisco Aironet
®
access points.
Q. What is the difference between the Cisco 3800 Series NME slot and the network module slot on Cisco 3700 Series systems?
A. The NME slot connects to a faster PCI bus for greater throughput and performance. The NME slot can also support higher power to the
modules, allowing for more service modules and increased density on the modules. The NME slot has the ability to support four different module
form factors, giving customers the flexibility to install modules of specific densities appropriate for the local needs.
Q. Are NME and HWIC slots backward-compatible?
A. Yes. You can use current-generation network modules and WICs in the new slots, but they will not be able to take advantage of the higher
throughput or PoE capabilities.
Q. Is online insertion and removal (OIR) supported for modules in the NME slot?
A. Yes. OIR of modules in the NME slot is supported on Cisco 3800 Series routers. OIR is used for replacement of like modules only,
and limitations apply per module. Please check the documentation of the individual modules and the OIR procedures before executing
this procedure.
Note: Cisco strongly recommends that all affected interfaces be administratively shut down prior to performing the OIR operation.
WICS
Q. What is a HWIC?
A. The high-speed WAN interface card (HWIC) is an updated and enhanced version of the current WIC in Cisco 2600 and 3700 series chassis.
The HWIC offers greater speeds and higher port density than the current WIC. It has a third row of pins, providing both increased power to the cards
and the ability to provide PoE and Cisco inline power. HWICs are available in two form factors—single-wide and double-wide. All Cisco 3800
Series routers can support four single-wide HWICs or two double-wide HWICs.
Q. What is the maximum throughput of the four onboard HWIC slots?
A. The maximum throughput per slot is up to 400 Mbps full duplex. The new Gigabit Ethernet HWIC and the 4- and 9-port Cisco EtherSwitch
HWIC modules are able to take advantage of this performance improvement up to the switching capabilities of individual platforms.
Q. Can a HWIC be used on the WIC slots of Cisco 2600, 3600, and 3700 series systems?
A. No. HWICs cannot be used on the WIC slots of Cisco 2600, 3600, or 3700 series systems. HWIC connectors have an additional row of pins to
support PoE, preventing the full insertion of the cards into legacy WIC slots.
Q. Is there any placement restriction of interfaces in any of the four integrated HWIC slots?
A. No. Any of the four available HWIC slots can be used for all supported VICs, VWICs, and WICs.
Q. Is OIR supported for modules in the HWIC slots?
A. No. OIR of modules in the HWIC slots is not supported.
Q. Are VICs supported in any of the four integrated HWIC slots?
A. Yes, but only the newer VICs (such as the VIC-4FXS/DID or VIC2-4FXO) are supported in any of the four integrated HWIC slots. PVDM2s
are required on the motherboard or on the analog or digital voice network modules for DSP resources. The nonsupported VICs are listed in Table 6.