Table Of Contents
Release Notes for Cisco MWR 2941 Mobile Wireless Edge Router Release 3.5.3, Cisco IOS Release 15.1(3)MRA2
Contents
Introduction
System Requirements
Memory Requirements
Determining the Software Version
Upgrading to a New Software Release
New and Changed Information
Support for Existing Cisco MWR 2941 Software Features
New Hardware Features in Cisco IOS Release 15.1(3)MRA1
New and Changed Behavior in Cisco IOS Release 15.1(3)MRA2
Limitations and Restrictions
Supported Hardware—Cisco MWR 2941-DC Router
Supported MIBs
Caveats in Cisco IOS Release 15.1(3)MRA2
Open Caveats
Resolved Caveats
Troubleshooting
Related Documentation
Services and Support
Release Notes for Cisco MWR 2941 Mobile Wireless Edge Router Release 3.5.3, Cisco IOS Release 15.1(3)MRA2
July 25, 2013
These release notes are for the Cisco MWR Mobile Wireless Edge Router Release 3.5.3 for Cisco IOS Release 15.1(3)MRA2. These release notes are updated as needed to describe new features, memory requirements, hardware support, software platform deferrals, and changes to the microcode.
For a list of the software caveats that apply to Cisco IOS Release 15.1(3)MRA2, see the "Caveats in Cisco IOS Release 15.1(3)MRA2".
To review all Cisco MWR 2941 release notes, including Release Notes for Cisco MWR 2941 Mobile Wireless Edge Router for Cisco IOS Release 15.1(3)MRA, go to:
http://www.cisco.com/en/US/products/ps9395/prod_release_notes_list.html
To review release notes for the Cisco IOS Software Release 15.1S, go to:
http://www.cisco.com/en/US/products/ps10890/prod_release_notes_list.html
Contents
This document contains the following sections:
•
Introduction
•System Requirements
•New and Changed Information
•Limitations and Restrictions
•Caveats in Cisco IOS Release 15.1(3)MRA2
•Troubleshooting
•Related Documentation
•Services and Support
Introduction
The Cisco MWR 2941 Mobile Wireless Router is a cell-site access platform specifically designed to aggregate and transport mixed-generation radio access network (RAN) traffic. The router is used at the cell site edge as a part of a 2G, 3G, or 4G radio access network (RAN). The Cisco MWR 2941 includes the following models:
•Cisco MWR 2941-DC
•Cisco MWR 2941-DC-A
The Cisco MWR 2941 router helps enable a variety of RAN solutions by extending IP connectivity to devices using Global System for Mobile Communications (GSM), General Packet Radio Service (GPRS), Node Bs using HSPA or LTE, base transceiver stations (BTSs) using Enhanced Data Rates for GSM Evolution (EDGE), Code Division Multiple Access (CDMA), CDMA-2000, EVDO, or WiMAX, and other cell-site equipment. It transparently and efficiently transports cell-site voice, data, and signaling traffic over IP using traditional T1 and E1 circuits, as well as alternative backhaul networks such as Carrier Ethernet and DSL, Ethernet in the First Mile (EFM), and WiMAX. It also supports standards-based Internet Engineering Task Force (IETF) Internet protocols over the RAN transport network, including those standardized at the Third-Generation Partnership Project (3GPP) for IP RAN transport. Custom designed for the cell site, the Cisco MWR 2941 features a small form factor, extended operating temperature, and cell-site DC input voltages.
System Requirements
•Memory Requirements
•Determining the Software Version
•Upgrading to a New Software Release
Memory Requirements
Table 1 lists the required memory for using this software.
Table 1 Cisco IOS Release 15.1(3)MRA2 Memory Requirements
Platform
|
Feature Set
|
Software Image
|
Recommended Flash Memory
|
Recommended DRAM Memory
|
Runs From
|
Cisco
MWR 2941
|
RAN
Optimization
|
mwr2941-adviprank9-mz.151-3.MRA1.bin
|
128 MB
|
512 MB
|
RAM
|
Cisco
MWR 2941
|
RAN
Optimization
|
mwr2941-advipran-mz.151-3.MRA1.bin
|
128 MB
|
512 MB
|
RAM
|
Determining the Software Version
To determine the image and version of Cisco IOS software running on your Cisco MWR 2941 router, log in to the router and enter the show version EXEC command:
Cisco IOS Software, 2900 Software (MWR2900-ADVIPRANK9-M), Version 15.1(3)MRA1, RELEASE
SOFTWARE (fc3)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2013 by Cisco Systems, Inc.
Compiled Thu 27-Mar-13 05:10 by prod_rel_team
ROM: System Bootstrap, Version 12.4(20100105:220700) [walrobin-cowgirl2-rommon 101],
DEVELOPMENT SOFTWARE
sh-2941k uptime is 1 day, 3 hours, 40 minutes
System returned to ROM by reload at 12:05:06 IST Fri Mar 14 2013
System restarted at 12:07:03 IST Dec 14 2012
System image file is "flash:mwr2941-adviprank9-mz.151-3.MRA1.fc3"
Upgrading to a New Software Release
For general information about upgrading to a new software release, refer to the Software Installation and Upgrade Procedures at:
http://www.cisco.com/en/US/products/hw/routers/ps259/products_tech_note09186a00801fc986.shtml
New and Changed Information
The following sections list the new hardware and software features supported by the Cisco MWR 2941 router.
•Support for Existing Cisco MWR 2941 Software Features
•New Hardware Features in Cisco IOS Release 15.1(3)MRA1
•New and Changed Behavior in Cisco IOS Release 15.1(3)MRA2
Support for Existing Cisco MWR 2941 Software Features
Cisco IOS Release 15.1(3)MRA2 supports the software features supported in Cisco IOS Release 15.1S.
For more information about Release 15.1S and previous releases, see:
http://www.cisco.com/en/US/products/ps9395/prod_release_notes_list.html.
New Hardware Features in Cisco IOS Release 15.1(3)MRA1
There are no new hardware features with Cisco MWR 2941 Release 3.5.2.
New and Changed Behavior in Cisco IOS Release 15.1(3)MRA2
There are no new and changed behavior with Cisco MWR Release 3.5.2, Cisco IOS Release 15.1(3)MRA2.
Limitations and Restrictions
Caution The Cisco MWR 2941 router does not support online insertion and removal (OIR) of WAN interface cards. Any attempt to perform OIR on a card in a powered-on router might cause damage to the card.
Cisco IOS Release 15.1(3)MRA2 for the Cisco MWR 2941 router has the following limitations and restrictions:
•The lacp rate command with the fast keyword specified is not supported on a port-channel interface.
•Synchronous Ethernet is not supported on the SFP-GE-T module.
•Release 15.1(3)MRA2 does not support ATM over MPLS N-to-1 Cell Mode or 1-to-1 Cell Mode.
•SPAN and RSPAN are not supported.
•VLAN Query Protocol (VQP) and VLAN Management Policy Server (VMPS) are not supported
•CFM Extension for Microwave 1+1 Hot Standby (HSBY) is only supported on Gigabit Ethernet interfaces 0/0-0/5.
•CEF Limitations—Cisco Express Forwarding (CEF) has the following limitations.
–Load balancing on GRE interfaces is not supported
–Load balancing on IOS switch interfaces is not supported
–Packets may choose different egress interfaces when interface is up/down
–Up to 16 interfaces are supported for load balancing
–SNMP traps for CEF load balancing are not supported
•Ingress vlan classification and marking is not supported on dot1q tunnel interfaces.
•Release 15.1(3)MRA2 does not support the 802.1ad standard for VLAN scalability. However, the release supports QinQ, a Cisco-proprietary system for double-tagging.to provide VLAN scalability in the provider networks.
•Release 15.1(3)MRA2 does not support the switchport vlan mapping default drop command.
•Release 15.1(3)MRA2 does not support translation between CFM draft 1 and IEEE standardized 802.1ag CFM.
•Ethernet LCK is not supported.
•OAM Manager.is not supported.
•CFM Draft 1.0 is not supported.
•CFM for Customer VLANs (C-VLANs) is not supported.
•Ethernet Locked Signal is not supported.
•Rapid PVST+ is not supported.
•VLAN translation is not supported on HWIC interfaces.
•Rate limiting and policing are not supported on HWIC or onboard Gigabit Ethernet interfaces.
•GSM Abis optimization not supported—Release 15.1(3)MRA2 does not support GSM Abis optimization feature that was supported in Release 12.4(20)MR1.
•Reduced HWIC support—Release 15.1(3)MRA2 does not support the HWIC-1GE-SFP, HWIC-4SHDSL, HWIC-1ADSL, and HWIC-1ADSL-I HWICs that were supported in Release 12.4(20)MR1.
•GRE offload not supported— 15.1(3)MRA2 does not support the GRE offload feature that was supported in Release 12.4(20)MR1.
•UMTS Iub Optimization not supported—Release 15.1(3)MRA2 does not support UMTS Iub optimization.
•L2TP not supported—The MWR 2941 currently does not support L2TP.
•Multicast used for PTP redundancy only—This release provides support for multicast in order to establish PTP redundancy; the Cisco MWR 2941 does not support multicast for other uses.
•Out-of-band master mode not supported—This release does not support out-of-band master mode for Timing over Packet/adaptive clock recovery. If your network design requires out-of-band master clocking, you can use the CEoPs SPA on the 7600 router for this purpose.
•ACR out-of-band payload limitation—The MWR 2941 only supports the payload-size values 486 (625 packets per second) or 243 (1250 packets per second) for out-of-band clock recovery.
•T1 SAToP is not supported on the HWIC-4T1/E1.
•Limited OAM support—ATM OAM (Operation, Administration, and Maintenance) is not supported on the short haul side of the Cisco MWR 2941.
•The Cisco MWR 2941 does not support the mpls traffic-eng tunnels command at the global or interface level.
•QoS Limitations—The Cisco MWR 2941 provides limited QoS support. For more information, see the Cisco MWR 2941-DC Mobile Wireless Edge Router Software Configuration Guide, Release 12.2(33)MRB.
•The Cisco MWR 2941 does not support the following options on offloaded dMLPPP bundles:
–ppp multilink idle-link
–ppp multilink queue depth
–ppp multilink fragment maximum
–ppp multilink slippage
–ppp timeout multilink lost-fragment
Note If you have a bundle that requires the use of these options, contact Cisco support for assistance.
For more information about configuring dMLPPP, see the Cisco MWR 2941-DC Mobile Wireless Edge Router Software Configuration Guide, Release 15.1(3)MRA2.
•MPLS pseudowire ping not supported—This release does not support the ping mpls pseudowire command. We recommend that you use the ping mpls ipv4 command for operation and maintenance of MPLS connections.
•CAS limitations—The Cisco MWR 2941 implementation of CAS has the following limitations:
–CAS is not supported on T1 and E1 HWICs.
–When configuring a CESoPSN pseudowire to use CAS, you must configure the controller to use CAS signalling prior to creating a cem group, tdm group, or channel group. Otherwise the Cisco MWR 2941 rejects the mode cas command.
–CAS is only supported on pseudowire connections between two Cisco MWR 2941 routers; the 7600 router does not currently support CAS.
•PTP only supported on Gigabit Ethernet interfaces—The Cisco MWR 2941 only supports PTP traffic on onboard Gigabit Ethernet interfaces.
•PPPoA not supported—This release does not provide support for PPPoA.
•ADSL not supported—This release does not support ADSL.
•BFD interface support limitations—Release 15.1(3)MRA2 only supports BFD on switched virtual interfaces (SVIs).
•Multicast interface limitations—Multicast is only supported on VLANs and Ethernet interfaces. Multicast routing is not supported on other interface types.
•Release 15.1(3)MRA2 supports up to 64 VLANs if the HWIC-D-9ESW card is in use; otherwise it supports a maximum of 255 VLANs as in previous releases.
•The Cisco MWR 2941 does not support access control lists (ACLs) for layer 3 forwarding through the network processor.
•The show interfaces command displays inaccurate information when used with the counters keyword. The counters for multicast packets display as 0 even if multicast traffic is passing on the router. To display correct multicast counters, use the show interfaces command without the counters keyword.
•The multicast packet counters in the show interfaces type number counters command output are set to 0 even if multicast traffic is enabled. To see accurate counters for multicast traffic, use the show interfaces command without the counters keyword.
•Virtual path-to-virtual path local switching is not supported.
•Local switching is only supported between onboard T1 and E1 ports; local switching between HWIC T1 and E1 ports is not supported.
•Ethernet loopback is only supported on onboard Gigabit Ethernet interfaces; it is not supported on HWIC Ethernet or port-channel interfaces.
Supported Hardware—Cisco MWR 2941-DC Router
The Cisco MWR 2941 supports the following interface cards:
•HWIC-4T1/E1
•HWIC-D-9ESW
Note Release 15.1(3)MRA2 does not support the HWIC-1GE-SFP, HWIC-4SHDSL, HWIC-1ADSL, and HWIC-1ADSL-I HWICs that were supported in Release 12.4(20)MR1.
The Cisco MWR 2941 router supports the following SFP modules:
•CWDM-SFP-1470
•CWDM-SFP-1490
•CWDM-SFP-1510
•CWDM-SFP-1530
•CWDM-SFP-1550
•CWDM-SFP-1570
•CWDM-SFP-1590
•CWDM-SFP-1610
•DWDM-SFP-4612
•DWDM-SFP-4692
•DWDM-SFP-4772
•DWDM-SFP-4851
•DWDM-SFP-5012
•DWDM-SFP-5092
•DWDM-SFP-5172
•DWDM-SFP-5252
•DWDM-SFP-5413
•DWDM-SFP-5494
•DWDM-SFP-5575
•DWDM-SFP-5655
•DWDM-SFP-5817
•DWDM-SFP-5898
•DWDM-SFP-5979
•DWDM-SFP-6061
•GLC-BX-D
•GLC-BX-U
•GLC-EX-SMD
•GLC-LH-SMD
•GLC-LX-SM-RGD
•GLC-SX-MM-RGD
•GLC-ZX-SM-RGD
•SFP-GE-L
•SFP-GE-S
•SFP-GE-T
•SFP-GE-Z
Other hardware interfaces are not supported.
Caution The Cisco MWR 2941 router does not support online insertion and removal (OIR) of WAN interface cards. Any attempt to perform OIR on a card in a powered-on router might cause damage to the card.
For instructions on how to install HWICs and SFPs, see the documentation included with the product. For information about how to configure HWICs and SFPs, see the Cisco MWR 2941 Mobile Wireless Edge Router Software Configuration Guide, Cisco IOS Release 15.1(3)MR.
Supported MIBs
The Cisco MWR 2941 router supports the following MIBs:
•CISCO-ACCESS-ENVMON-MIB
•CISCO-CDP-MIB
•CISCO-CONFIG-COPY-MIB
•CISCO-CONFIG-MAN-MIB
•CISCO-ENHANCED-MEMPOOL-MIB
•CISCO-ENTITY-EXT-MIB
•CISCO-ENTITY-FRU-CONTROL-MIB
•CISCO-ENTITY-SENSOR-MIB
•CISCO-ENTITY-VENDORTYPE-OID-MIB
•CISCO-ENVMON-MIB
•CISCO-FLASH-MIB
•CISCO-IETF-BFD-MIB
•CISCO-IETF-PW-MIB
•CISCO-IETF-PW-TC-MIB
•CISCO-IF-EXTENSION-MIB
•CISCO-IMAGE-MIB
•CISCO-MEMORY-POOL-MIB
•CISCO-PROCESS-MIB
•CISCO-PRODUCTS-MIB
•CISCO-RESILIENT-ETHERNET-PROTOCOL-MIB
•CISCO-RTTMON-MIB
•CISCO-SMI
•CISCO-SYSLOG-MIB
•CISCO-TC
|
•CISCO-VTP-MIB
•ENTITY-MIB
•HCNUM-TC
•IANAifType-MIB
•IF-MIB
•IMA-MIB
•INET-ADDRESS-MIB
•IP-FORWARD-MIB
•IP-MIB
•MPLS-VPN-MIB
•OLD-CISCO-CHASSIS-MIB
•OLD-CISCO-INTERFACES-MIB
•OLD-CISCO-SYS-MIB
•OLD-CISCO-TS-MIB
•PerfHist-TC-MIB
•RFC1213-MIB
•RMON2-MIB
•RMON-MIB
•SNMP-FRAMEWORK-MIB
•SNMP-TARGET-MIB
•SNMPv2-CONF
•SNMPv2-MIB
•SNMPv2-SMI
•SNMPv2-TC
|
Note Release 15.1(3)MRA2 provides limited support for the CISCO-CLASS-BASED-QOS-MIB for tail drop monitoring; the router supports the cbQosQueueingDiscardPkt64 object within the cbQosQueueingStatsTable table for tail drop accounting. Other objects in this table and other tables within the CISCO-CLASS-BASED-QOS-MIB are not supported.
Caveats in Cisco IOS Release 15.1(3)MRA2
This section documents the open and resolved caveats for the Cisco MWR 2941 router running Cisco IOS Release 15.1(3)MRA2.
Caveats describe unexpected behavior in Cisco IOS software releases. Severity 1 caveats are the most serious caveats, severity 2 caveats are less serious, and severity 3 caveats are the least serious of these three severity levels. Only select severity 3 caveats are listed.
For information on caveats in Cisco IOS Software Releases 15.1S, go to:
http://www.cisco.com/en/US/products/ps10890/prod_release_notes_list.html.
Note If you have an account with Cisco.com, you can use the Bug Toolkit to find caveats of any severity for any release. To reach the Bug Toolkit, log in to Cisco.com and click the Support tab and select Support from the drop-down menu. Under Frequently Used Resources, click Bug Toolkit. You must then log in. Another option is to go directly to: http://www.cisco.com/pcgi-bin/Support/Bugtool/launch_bugtool.pl.
The following section describe the following types of caveats in Cisco IOS Release 15.1(3)MRA1.
•Open Caveats
•Resolved Caveats
Open Caveats
•CSCug84800
Symptom: Speed/Duplex is not resolved and link down after a span of reloads.
Conditions: Line protocol is down in MWR2941 after multiple reloads. The reason is speed and duplex are mismatched after span of reloads.
Configured the interface with speed 100 and duplex full. But after a span of reloads, the speed is set to 10/1000 or duplex is set to half. So the line protocol is in down state.
Workaround: Flap the interface to make it in up state.
•CSCug08996
Symptom: Write memory causes momentary REP failures and BFD failures.
Conditions: Occurs in the following topology:
Topology: IXIA1---------MWR1-----------MWR2/ASR--------IXIA2
Write memory operation on 2941 REP node causes the following REP segment errors with adjacent nodes.
The File System write accesses NV write API, which uses higher CPU cycles on MWR CSR, and causes flaps of CPU serviced protocol like REP.
Workaround: No Workaround.
Resolved Caveats
•CSCud43282
Symptoms: For port-channel interfaces, input and output service policies need to be re-applied after reload of device.
Conditions: Occurs in the following topology:
Topology: IXIA1---------MWR1-----------MWR2/ASR--------IXIA2
Configure Port-channel between the MWR Routers
Attach the QoS policy to the port-channel interface.
Configuring the Bandwidth on port-channel is mandatory.
Reload the MWR router. The Service policy will be removed from the port-channel interface.
Workaround: Re-apply the Service policy after reload to the port-channel interface.
•CSCuc80702
Symptom: MWR crashed after addition of new link in Port-channel.
Conditions: Occurs in the following topology:
Topology: IXIA1---------MWR1-----------MWR2/ASR9k--------IXIA2
Configure Port-channel between the MWR Routers
Tracebacks are seen after addition of new link in port-channel when new link interface configuration parameters does not match with existing link configuration, that are already bundled in port-channel. After Tracebacks, router may also crash.
•CSCuf73736
Symptom: SFP Transceiver block is not attached upon reload.
Conditions: SFP Interface Gi0/0 could not identify the SFP MediaType (SUMITOMO SFP), when powered up.The same SFP type was detected on Gig0/1, which continued to forward traffic on the ring.
•CSCug26426
Symptom: Storm control filter is not disabled after recovering from storm, and PPPoE session is not established.
Conditions: Occurs in the following topology:
Topology: IXIA1---------MWR1-----------MWR2/ASR9k--------IXIA2
PPPoE session is not established after being recovered from storm. Issue is seen after creating storm by the loopback connection.
Workaround: Configure loop on the defect port and then reconnect PPPoE or Reload the Router.
•CSCuh22270
Symptom: Ping and BFD failed after reloading the router with Port-channel.
Conditions: Occurs in the following topology:
Topology: IXIA1---------MWR1-----------MWR2/ASR9k--------IXIA2
Configure the port-channel with 2 or 3 members.
Configure BFD and make sure the BFD neighbors are in up state.
Ensure the ping is fine.
Reload the Router and we see that Ping and BFD failed after reloading the router with PoCh
Workaround: Bouncing the port channel makes it work again.
Troubleshooting
The following sections describe troubleshooting commands you can use with the Cisco MWR 2941.
Collecting Data for Router Issues
To collect data for reporting router issues, issue the following command:
•show tech-support—Displays general information about the router if it reports a problem.
Collecting Data for ROMmon Issues
To collect data for ROMmon issues, issue the following command while in EXEC mode:
•show rom-monitor—Displays currently selected ROM monitor.
Note If you contact Cisco support for assistance, we recommend that you provide any crashinfo files stored in flash memory. For more information about crashinfo files, see http://www.cisco.com/en/US/products/hw/routers/ps167/products_tech_note09186a00800a6743.shtml.
Related Documentation
Related documents for implementing the Cisco MWR 2941 mobile wireless edge router are available on Cisco.com
To access the related documentation on Cisco.com, go to:
http://www.cisco.com/en/US/products/ps9395/tsd_products_support_series_home.html
Documents related to the Cisco MWR 2941-DC mobile wireless edge router include the following guides:
•Cisco MWR 2941 Mobile Wireless Edge Router documents
–Cisco MWR 2941 Mobile Wireless Edge Router Hardware Installation Guide
–Cisco MWR 2941 Mobile Wireless Edge Router Software Configuration Guide, Cisco IOS Release 15.1(3)MR
–Cisco MWR 2941 Router Command Reference, Cisco IOS Release 15.1(3)MR
–Regulatory Compliance and Safety Information for the Cisco MWR 2941 Mobile Wireless Edge Routers
•Release Notes—Release Notes for Cisco MWR 2941 Mobile Wireless Edge Router for Cisco IOS Release 15.1(3)MRA2
•Cisco Interface Cards Installation Guides
–Quick Start Guide: Interface Cards
–Cisco Interface Cards Installation Guide
Services and Support
For information on obtaining documentation, obtaining support, providing documentation feedback, security guidelines, and also recommended aliases and general Cisco documents, see the monthly What's New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at:
http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html
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