Release Notes for Cisco ONS 15454 RAN Service Module for Cisco IOS Release 12.2(29)SM6
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Table Of Contents
Release Notes for Cisco ONS 15454 RAN Service Module for Cisco IOS Release 12.2(29)SM6
Determining the Software Version
Upgrading to a New Software Release
New Features in the Cisco IOS Release 12.2(29)SM6 Software
New Features in the Cisco IOS Release 12.2(29)SM5 Software
New Features in the Cisco IOS Release 12.2(29)SM4 Software
New Features in the Cisco IOS Release 12.2(29)SM3 Software
New Features in the Cisco IOS Release 12.2(29)SM2 Software
New Features in the Cisco IOS Release 12.2(29)SM1 Software
New Features in the Cisco IOS Release 12.2(29)SM Software
Caveats in Cisco IOS Release 12.2(29)SM6
Caveats in Cisco IOS Release 12.2(29)SM5
Caveats in Cisco IOS Release 12.2(29)SM4
Caveats in Cisco IOS Release 12.2(29)SM3
Caveats in Cisco IOS Release 12.2(29)SM2
Caveats in Cisco IOS Release 12.2(29)SM1
Caveats in Cisco IOS Release 12.2(29)SM
Release Notes for Cisco ONS 15454 RAN Service Module for Cisco IOS Release 12.2(29)SM6
April 8, 2010
OL-20159-01
These release notes are for the Cisco ONS 15454 RAN Service Module for Cisco IOS Release 12.2(29)SM6. These release notes are updated as needed to describe new features, memory requirements, hardware support, software platform deferrals, and changes to the microcode and related documents.
For a list of the software caveats that apply to Cisco IOS Release 12.2(29)SM6, see the "Caveats in Cisco IOS Release 12.2(29)SM6" section.
To review Cisco ONS 15400 Series release notes, including Release Notes for Cisco ONS 15454 RAN Service Module for Cisco IOS Release 12.2(29)SM6, go to the following URL:
http://www.cisco.com/en/US/products/hw/optical/ps2006/prod_release_notes_list.html
To review release notes for the Cisco IOS Software Releases 12.2 Special and Early Deployments, including Release Notes for Cisco ONS 15454 RAN Service Module for Cisco IOS Release 12.2(29)SM6, go to the following URL:
http://www.cisco.com/en/US/products/sw/iosswrel/ps5012/prod_release_notes_list.html
Contents
This document contains the following sections:
Introduction
Cisco IOS 12.2(29)SM introduces support for GSM and UMTS Radio Access Network (RAN) Optimization for mobile wireless service providers for the RAN Service Module (ONS-RAN-SVC) on a Cisco ONS 15454 platform. Cisco IOS 12.2(29)SM provides GSM and UMTS RAN Optimization (RAN-O) technology that can extend an IP network to every base station site in the mobile network with a shared backhaul transport, plus optimization to reduce bandwidth requirements.
In RAN Optimization (RAN-O), the Cisco MWR 1941-DC-A router extends IP connectivity to the cell site and the BTS/Node B. The router provides bandwidth-efficient IP transport of GSM and UMTS voice and data bearer traffic, as well as maintenance, control, and signaling traffic, over the leased line backhaul network between the BTS/Node B and leased line termination and the Cisco ONS 15454 aggregation node via compression (cRTP/cUDP) and packet multiplexing (Multilink PPP).
Residing in a Cisco ONS 15454, the Cisco RAN Service Module provides aggregation for traffic originating from multiple MWR cell site routers. The RAN Service Module transmits and receives short haul DS0 level data steams (for GSM applications) and shorthaul VC-4 level data streams (for UMTS applications) through ONS 15454 cross-connect cards. DS0 level channel cards connect both the long haul to the remote cell site and the short haul to GSM BSC. Clear channel VC-4 level interface cards are used on the Cisco ONS 15454 to provide the interface from the UMTS RNC to the ONS RAN Service Module.
The Cisco RAN Service Module consists of four independent IOS processors. Each Cisco RAN Service Module has four 10/100/1000 Gigabit Ethernet (RJ-45) ports with one port connected to each IOS processor. The Cisco RAN Service Module is also equipped with four VC-4 level Packet over SONET (POS) interfaces and four VC-4 level ATM interfaces and up 80 DS0 level backplane interfaces for shorthaul and up to 40 DS0 level backplane interfaces for backhaul applications. One IOS processor is dedicated as a service processor while the remaining three IOS processors are dedicated as traffic processors. The Cisco ONS RAN Service Module also includes two RJ-45 ports, one used as a DCE console (labeled Console) and the other used as a debug port (covered with a tab plate).
The Cisco ONS 15454 shelf assembly has 17 card slots that are numbered sequentially from left to right. Slots 1 - 4 and 14 - 17 are multispeed slots. Slots 5, 6, 12 and 13 are high-speed slots. Slots 7 and 11 are dedicated to TCC-I cards. Slots 8 and 10 are dedicated to cross-connect (XC10G) cards. Slot 9 is dedicated to the AIC card. The Cisco ONS RAN Service Module can be installed in Slots 1 through 6 or 12 through 17, depending on the application and line card configuration.
System Requirements
Cisco IOS 12.2(29)SM6 is a specific technology early deployment release (STED) for the Cisco ONS 15454 RAN Service Module, which runs on its own software image.
Memory Requirements
Table 1 lists the required memory for using this software.
Determining the Software Version
To determine the version of Cisco IOS software running on your Cisco ONS 15454 RAN Service Module, log in to the Cisco ONS 15454 and enter the show version EXEC command:
Router# show versionCisco IOS Software, ONS RAN-Series Software (RANSVC-IPRAN-M), Version 12.2(29)SM6, RELEASE SOFTWARE (fc1)Technical Support: http://www.cisco.com/techsupportCopyright (c) 1986-2009 by Cisco Systems, Inc.Compiled Wed 02-Sep-09 14:12 by ciiROM: System Bootstrap, Version 0.28(20070411:062249) [usellent-skyla_nightly 202], DEVELOPMENT SOFTWARERouter uptime is 1 minuteSystem returned to ROM by reload at 23:07:41 EDT Wed Sep 2 2009System restarted at 23:10:49 EDT Wed Sep 2 2009System image file is "tftp://127.0.0.100/S_I.BIN"Cisco RAN (RANSVC) processor (revision 31) with 221737K/32768K bytes of memory.Processor board ID CTR100700XHSB-1A CPU at 900Mhz, Implementation 1041, Rev 0.0Last reset from User Reload4 Gigabit Ethernet interfaces4 ATM interfaces57344K bytes of processor board Boot flash (Read/Write)8192K bytes of processor board System flash (Read/Write)Configuration register is 0x2102To determine the ROMMON version, log in to the Cisco ONS 15454 and enter the show rom-monitor EXEC command:
ons1-rn-sm14#show rom-monitorReadOnly ROMMON version:System Bootstrap, Version 0.17(20060615:061212) [m1-rn-sm_nightly 323], DEVELOPMENT SOFTWARE Copyright (c) 1994-1999 by cisco Systems, Inc.ReadOnly ROMMON ONS 15454 version: 0.17Upgrade ROMMON version:System Bootstrap, Version 0.23(20061028:061451) [m1-rn-sm_nightly 106], DEVELOPMENT SOFTWARE Copyright (c) 1994-1999 by cisco Systems, Inc.Upgrade ROMMON ONS 15454 version: 0.23Currently running ROMMON from Upgrade region ROMMON from Upgrade region is selected for next bootUpgrading to a New Software Release
For general information about upgrading to a new software release, refer to Software Installation and Upgrade Procedures located at the following URL:
http://www.cisco.com/cisco/web/psa/default.html?mode=prod
New and Changed Information
The following sections list the new hardware and software features supported by the Cisco ONS 15454 RAN service module:
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New Features in the Cisco IOS Release 12.2(29)SM6 Software
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New Features in the Cisco IOS Release 12.2(29)SM6 Software
No new features are supported by the Cisco ONS 15454 RAN service module for Cisco IOS Release 12.2(29)SM6.
New Features in the Cisco IOS Release 12.2(29)SM5 Software
No new features are supported by the Cisco ONS 15454 RAN service module for Cisco IOS Release 12.2(29)SM5.
New Features in the Cisco IOS Release 12.2(29)SM4 Software
No new features are supported by the Cisco ONS 15454 RAN service module for Cisco IOS Release 12.2(29)SM4.
New Features in the Cisco IOS Release 12.2(29)SM3 Software
No new features are supported by the Cisco ONS 15454 RAN service module for Cisco IOS Release 12.2(29)SM3.
New Features in the Cisco IOS Release 12.2(29)SM2 Software
No new features are supported by the Cisco ONS 15454 RAN service module for Cisco IOS Release 12.2(29)SM2.
New Features in the Cisco IOS Release 12.2(29)SM1 Software
The following support features are provided by Cisco IOS Release 12.2(29)SM1:
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New Features in the Cisco IOS Release 12.2(29)SM Software
No new features are supported by the Cisco ONS 15454 RAN service module for Cisco IOS Release 12.2(29)SM.
Limitations and Restrictions
Unsupported Cisco IOS Software Features
The Cisco ONS RAN Service Module requires a special version of Cisco IOS software. Not all Cisco IOS software features can be used as the core routing is handled by the network processor. The following standard Cisco IOS software features are not supported:
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Note
Caveats
This section documents the open and resolved caveats for the Cisco ONS 15454 running Cisco IOS Release 12.2(29)SM6. Only severity 1 through 3 caveats are included.
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.
Caveats in Cisco IOS Software Releases 12.2 Mainline and Cisco IOS Software Releases 12.2S are also in Cisco IOS Release 12.2(29)SM.
For information on caveats in Cisco IOS Software Releases 12.2 Mainline, go to the following URL on Cisco.com:
http://www.cisco.com/en/US/products/sw/iosswrel/ps1835/prod_release_notes_list.html
For information on caveats in Cisco IOS Software Releases 12.2S, go to the following URL on Cisco.com:
http://www.cisco.com/en/US/products/sw/iosswrel/ps1838/prod_release_notes_list.html
These documents list severity 1 and 2 caveats and can be found on Cisco.com.
Note
http://www.cisco.com/cgi-bin/Support/Bugtool/launch_bugtool.pl.
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Caveats in Cisco IOS Release 12.2(29)SM6
The following caveats are opened and resolved in Cisco IOS Release 12.2(29)SM6.
Open Caveats
There are no known open caveats in Cisco Release 12.2(29)SM6.
Resolved Caveats
This section documents the caveats that are resolved in Cisco IOS Release 12.2(29)SM6.
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Description: The BTS reports TS sync fault errors on some E1s. These errors can persist for very long durations in some instances.
Conditions: Occurs after a large burst of errors on the backhaul due to poor quality line between the BSC and BTS sites a brief outage on the backhaul line.
Workaround: The problem timeslots can be recovered by performing a shut/no shut on the serial interface.
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Description: RAN-SVC card located in Cisco ONS 15454 reboots.
Conditions: Occurs on RAN-SVC card running Cisco IOS Software 12.2(29)SM5
Workaround: None.
Caveats in Cisco IOS Release 12.2(29)SM5
The following caveats are opened and resolved in Cisco IOS Release 12.2(29)SM5.
Open Caveats
There are no known open caveats in Cisco Release 12.2(29)SM5.
Resolved Caveats
This section documents the caveats that are resolved in Cisco IOS Release 12.2(29)SM5.
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Description: CTC reports that the RAN-SVC card reloaded, but no crashinfo file is created, and IOS on the RAN SVC card reports user reload as the reason.
Conditions: This issue usually occurs under heavy load, often (but not always) after backhaul L1 errors.
Workaround: There is no known workaround.
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Description: The RAN-SVC card reloads, but no crashinfo file is created, and IOS indicates that the last reload was due to user reload.
Conditions: This issue was seen when running many GSM shorthauls to a single backhaul using a loopback IP address with the gsm-abis local command. It occurred when there were issues with the backhaul.
Workaround: Use the IP address of the backhaul with the gsm-abis local command instead of a loopback IP address.
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Description: After many GSM shorthaul flaps in a very short period of time caused by network issues, the RAN SVC card reloads. Traceback and crashinfo files are created.
Conditions: This issue appears to require many GSM shorthaul interfaces, and seems to occur on a traffic CPU that also contains the backhaul interface. After a network event that causes GSM peers to flap excessively in a short duration, one of the traffic CPUs crashes with a TLB (load or instruction fetch) error.
Workaround: No certain known workaround exists. Moving all shorthauls to different traffic CPUs from the backhaul may resolve this issue.
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Cisco devices running affected versions of Cisco IOS Software are vulnerable to a denial of service (DoS) attack if configured for IP tunnels and Cisco Express Forwarding.
Cisco has released free software updates that address this vulnerability.
This advisory is posted at http://www.cisco.com/warp/public/707/cisco-sa-20090923-tunnels.shtml.
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Cisco IOS Software configured with Authentication Proxy for HTTP(S), Web Authentication or the consent feature, contains a vulnerability that may allow an unauthenticated session to bypass the authentication proxy server or bypass the consent webpage.
There are no workarounds that mitigate this vulnerability.
This advisory is posted at the following link: http://www.cisco.com/warp/public/707/cisco-sa-20090923-auth-proxy.shtml
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Description: The router reloads and the crashinfo file indicates a cache error and CPO_ECC has the following value:
Cache error detected!CPO_ECC (reg 26/0): 0xC0000000This is a hardware corrected cache error that should not result in a router reload.
Conditions: This issue affects the RAN-SVC card. While rare, there is no specific trigger for this failure.
Workaround: There is no workaround for this issue.
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Description: The RAN-SVC card resets indicating an IPC Reliable Timeout error in the console log and/or the service CPU crashinfo file. This particular error message indicates that either communication has failed from the service CPU to the traffic CPU or that the traffic CPU is over utilized and cannot process a critical management command within a defined timeout period of 25 seconds.
Conditions: Three RAN-SVC service cards in a 1:2 protection group using POS interconnections between the two working cards. The "edge" card is supporting at least 95 GSMmux shorthauls.
Workaround: There is no workaround.
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Description: The POS interfaces connected to a protected RAN-SVC card in active mode are in an UP/DOWN state until the working/failed card enters working/standby state.
Conditions: Three RAN SVC service cards are in a 1:2 protection group using POS interconnections between the two working cards. The "edge" card is supporting at least 95 GSMmux shorthauls.
Workaround: There is no workaround.
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Description: The RAN-SVC card crashes with a TLB Modification exception.
Conditions: An adjacent site has a power failure. The local device has redundancy with one RAN Service module. The following message is issued repeatedly before the crash.
%SYS-2-LINKED: Bad enqueue of 625D1C40 in queue 625AA818Workaround: There is no workaround.
Caveats in Cisco IOS Release 12.2(29)SM4
The following caveats are opened and resolved in Cisco IOS Release 12.2(29)SM4.
Open Caveats
There are no known open caveats in Cisco Release 12.2(29)SM4.
Resolved Caveats
This section documents the caveats that are resolved in Cisco IOS Release 12.2(29)SM4.
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Description: The bitstuff factor is not being used for the serial link bitstuff estimate.
The computation for E1/T1 HDLC/PPP encapsulated bitstuff estimate uses a bitstuffing factor to compute the estimated number of bytes that will be added by the hardware (i.e. KETO) when transmitting the data. This estimate is used by the pmon software back pressure mechanism to prevent KETO buffer overruns in the egress path. Without the use of this estimate, the potential for overruns increases when the link utilization is above 88%.
Code changes have been made so that the bitstuff factor is being used for the serial link bitstuff estimate, allowing for normal traffic patterns in the 93-97% range before increasing the potential for overruns.
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Description: When aaa new-model command is in the router configuration, it causes the adjacency to be set to "punt next level" for all multilink interfaces. This causes all traffic destined for a multilink backhaul to be sent to the service CPU and handled at process level.
Code changes allow for the aaa new-model command in the router configuration.
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Description: The command show ppp multilink interface multilink x always reports zeros for the received classes when multiclass is configured.
Code changes enable the correct reporting of received classes.
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Description: On an RANSVC card supporting large MLPPP bundles, removal of a single member from a single bundle can cause all of the MLPPP members on the router to flap.
Buffer exhaustion has been corrected by correcting buffer management and increasing the number of buffers. This is not configurable.
Caveats in Cisco IOS Release 12.2(29)SM3
The following caveats are opened and resolved in Cisco IOS Release 12.2(29)SM3.
Open Caveats
There are no known open caveats in Cisco Release 12.2(29)SM3.
Resolved Caveats
This section documents the caveats that are resolved in Cisco IOS Release 12.2(29)SM3.
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Description: Applying "loopback payload" in an ATM interface configuration mode could result in a message similar to the following appearing on the router console port:
SBFIFO-1-BAD_PAK_LEN
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Description: When 1:N Protection is used with SNMP, and the snmp-server engineID command is in the running IOS configuration, the following line automatically gets added to the running configuration:
snmp mib community-map cellbus engineid nnnnnnn....
If this is saved into the startup configuration on the toc, a memory corruption error occurs and the router reloads when a protection switch occurs. This condition does not occur upon a normal working card boot. It occurs only when a protection switch occurs. It also may cause both the working and protect to reload continuously for the same error after the first protection fail.
Caveats in Cisco IOS Release 12.2(29)SM2
The following caveats are opened or resolved in Cisco IOS Release 12.2(29)SM2.
Open Caveats
This section documents the caveats that are open in Cisco IOS Release 12.2(29)SM2.
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Description: Applying "loopback payload" in an ATM interface configuration mode could result in a message similar to the following appearing on the router console port:
SBFIFO-1-BAD_PAK_LEN
Workaround: Do not use the loopback configuration on ATM interfaces.
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Description: When 1:N Protection is used with SNMP, and the snmp-server engineID command is in the running IOS configuration, the following line automatically gets added to the running configuration:
snmp mib community-map cellbus engineid nnnnnnn....
If this is saved into the startup configuration on the toc, a memory corruption error occurs and the router reloads when a protection switch occurs. This condition does not occur upon a normal working card boot. It occurs only when a protection switch occurs. It also may cause both the working and protect to reload continuously for the same error after the first protection fail.
Workaround: Use CTC to save the configuration to a file. Remove the following line:
snmp mib community-map cellbus engineid nnnnnnn....
Then use CTC to store the configuration from the file.
Resolved Caveats
This section documents the caveats that are resolved in Cisco IOS Release 12.2(29)SM2.
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Description: 802.1q is not supported on RANSVC.
Caveats in Cisco IOS Release 12.2(29)SM1
The following caveats are opened or resolved in Cisco IOS Release 12.2(29)SM1.
Open Caveats
There are no known open caveats in Cisco Release 12.2(29)SM1.
Resolved Caveats
This section documents the caveats that are resolved in Cisco IOS Release 12.2(29)SM1.
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Description: Need the ability to create ACLs on the service CPU that get applied to the traffic CPUs.
Workaround: Added ACL support to SKYLA traffic CPUs.
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Description: IP over ATM does not work.
Workaround: When IP over ATM is not working on the traffic CPUs, it is still working on the service CPU. CEF is simply not punting the traffic to the service CPU.
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Description: PPP and LEX encapsulations were not supported for POS on the RAN-SVC card.
Workaround: Added check to not punt LCP and IPCP packets. Also, added code to disable the hdlc_periodic function when encap is changed. This was only done during IDB init.
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Description: Add support for distributed Shorthauls so backhaul and shorthaul can be on different CPUs.
Workaround: When queuing enabled, do not punt to service CPU.
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Description: dGRE Tunneling Code cleanup from the initial dGRE commit.
Workaround: There is still a problem with tunnel adjacencies, so a shut/no shut of the tunnel interface is required after all cpus have booted.
Caveats in Cisco IOS Release 12.2(29)SM
The following caveats are opened or resolved in Cisco IOS Release 12.2(29)SM.
Open Caveats
There are no known open caveats in Cisco Release 12.2(29)SM.
Resolved Caveats
This section documents the caveats that are resolved in Cisco IOS Release 12.2(29)SM.
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Description: When mixed GSM and UMTS traffic is run on an MLPPP backhaul and the UMTS traffic utilization is over 60 percent of the total MLPPP backhaul, then GSM errors are seen and GSM packets may not arrive in a timely manner. This happens for the default value of the GSM jitter (4 milliseconds) and a UMTS backhaul MTU of 450 bytes.
Workaround: Recommended configuration changes for such deployments are as follows:
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Either or both of the workaround configuration changes will fix the problem. A user can choose the option that best fits the particular deployment and traffic requirements.
Commands: The following commands are available for the above workaround:
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<4-2000> transmit jitter (in milliseconds)
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<250-4440> mtu in byte
Related Documentation
Related documents for implementing the Cisco ONS 15454 Service Module are at http://www.cisco.com/en/US/products/hw/optical/ps2006/tsd_products_support_series_home.html
Documents related to the Cisco ONS 15454 Service Module include the following guides:
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Service 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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