Cell Site Dcn Implementation Limitations And Restrictions; New Features In Cisco Ios Release 12.2(15)Mc2H; Support For 6 T1/E1 Interfaces Per/Mwr; Support For 1800 Cids Per/Mwr - Cisco MWR 1941-DC - 1941 Mobile Wireless Router Software Configuration Manual

Chapter 1 Overview of the Cisco MWR 1941-DC Router

Cell Site DCN Implementation Limitations and Restrictions

The following list of restrictions applies when implementing the MWR 1941-DC router in a Cell Site
DCN.
Caution The Cisco MWR 1941-DC router does not support online insertion and removal (OIR) of network
modules. Any attempt to perform OIR on a card in a powered up router might cause damage to the card.
Using the 1-port T3/E3: NM-1T3/E3(=)
When using the 1-port T3/E3 network module in your MWR 1941-DC router configuration, note that E3
mode is not supported with Cisco IOS Release 12.2(15)MC1a. E3 mode is supported with Cisco IOS
Release 12.2(15)MC1b and later.
Also, when used with the MWR 1941-DC router, the NM-1T3/E3 supports line rate throughput for traffic
with packet sizes of 1500 bytes. For traffic with smaller packet sizes, degradation in throughput will be
seen.
Upgrading the VWIC-2MFT-T1-DIR Microcode
When upgrading the image on your Cisco MWR 1941-DC router, power cycle the router or perform a
microcode reload on the VWIC-2MFT-T1-DIR to ensure that the firmware for the VWIC-2MFT-T1-DIR
is updated during the upgrade.

New Features in Cisco IOS Release 12.2(15)MC2h

The following new features are implemented in Cisco IOS Release 12.2(15)MC2h and later releases:
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Support for 6 T1/E1 Interfaces per/MWR

The new MWRs support up to 6 T1/E1 interfaces on the platform. These interfaces are configured by
IOS software as controller t1 0/4 and controller t1 0/5 for the T1 interface, and as controller e1 0/4 and
controller e1 e1 0/5 for the E1 interface. In effect, the multilink interface can now be configured with 6
T1 or 6 E1 interfaces under it. Also, the number of serial interfaces can increase depending upon how
the T1/E1 interfaces are split up by the configuration. All controller specific commands are applicable
to the new T1/E1 interfaces.

Support for 1800 CIDs per/MWR

With Cisco IOS Release 12.2(15)MC2h, the maximum number of connections is increased to 1800 for
the interface configuration command ip rtp compression-connections. This command is also used to
specify the total number of Real-Time Transport Protocol (RTP) header compression connections that
can exist on an interface. The default is 16 CID connections.
OL-11503-01
Support for 6 T1/E1 interfaces per/MWR
Support for 1800 Context IDs (CIDs) per/MWR
Support for enhanced Link Noise Monitoring (LNM)
Cisco MWR 1941-DC Mobile Wireless Edge Router Software Configuration Guide
New Features in Cisco IOS Release 12.2(15)MC2h
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