Cisco Cisco IOS Software Releases 12.2 MC 發佈版本通知
2
Release Notes for Cisco MWR 1941-DC Mobile Wireless Edge Router for Cisco IOS Release 12.2(15)MC2
OL-13984-06
Introduction
•
•
•
Introduction
The Cisco MWR 1941-DC Mobile Wireless Edge Router running Cisco IOS Release 12.2(15) MC2
software is a networking platform optimized for use in mobile wireless networks. It extends IP
connectivity to the cell site and Base Transceiver Station (BTS), and through a Fast Ethernet interface
to the BTS, provides bandwidth-efficient IP transport of voice and data bearer traffic, as well as
maintenance, control, and signalling traffic, over the leased line backhaul network between the BTS and
leased line termination and aggregation node via compression (cRTP/cUDP) and packet multiplexing
(PPPMux and MLPPP). It supports a limited set of interfaces and protocols, but offers high performance
at a low cost while meeting the critical requirements for deployment in cell sites, including small size,
extended operating temperature range, high availability, and DC input power flexibility.
software is a networking platform optimized for use in mobile wireless networks. It extends IP
connectivity to the cell site and Base Transceiver Station (BTS), and through a Fast Ethernet interface
to the BTS, provides bandwidth-efficient IP transport of voice and data bearer traffic, as well as
maintenance, control, and signalling traffic, over the leased line backhaul network between the BTS and
leased line termination and aggregation node via compression (cRTP/cUDP) and packet multiplexing
(PPPMux and MLPPP). It supports a limited set of interfaces and protocols, but offers high performance
at a low cost while meeting the critical requirements for deployment in cell sites, including small size,
extended operating temperature range, high availability, and DC input power flexibility.
System Configuration Requirements
When being implemented in a Cisco IP Radio Access Network (IP-RAN) solution, the
Cisco MWR 1941-DC router requires the following system configuration:
Cisco MWR 1941-DC router requires the following system configuration:
•
Cisco IOS 12.2(8) MC2 or a later Cisco IOS Release 12.2 MC software (excluding Cisco IOS
Release 12.2(15)MC1a and Cisco IOS Release 12.2(15)MC2b).
Release 12.2(15)MC1a and Cisco IOS Release 12.2(15)MC2b).
•
Network Time Protocol (NTP)
Network Time Protocol must be configured. The Cisco MWR 1941-DC router uses NTP to maintain
a clocking source for the proper time stamping of system messages and log files.
a clocking source for the proper time stamping of system messages and log files.
•
Redundancy
When not using the Cisco MWR 1941-DC router in a redundant configuration, the standalone option
must be configured from redundancy mode.
must be configured from redundancy mode.
When using the Cisco MWR 1941-DC router in a redundant configuration:
–
Keepalives under the FE must be set to 1.
–
Extended Availability Drop and Insert (EADI) capabilities must be disabled on the router (using
the disable-eadi global configuration command) to avoid a double-termination situation upon
router reboot. If the MWR 1941-DC is not being used in a redundant configuration and EADI
is specifically required, you can re-enable EADI using the no disable-eadi global configuration
command.
the disable-eadi global configuration command) to avoid a double-termination situation upon
router reboot. If the MWR 1941-DC is not being used in a redundant configuration and EADI
is specifically required, you can re-enable EADI using the no disable-eadi global configuration
command.
–
When attaching the MWR 1941-DC to a device that uses spanning tree, portfast must be
configured on the device to avoid problems with HSRP at startup.
configured on the device to avoid problems with HSRP at startup.