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Release Notes for the Cisco 10000 Router for Cisco IOS Release 12.2(15)BX

Table Of Contents

Release Notes for the Cisco 10000 Router
for Cisco IOS Release 12.2(15)BX

Contents

Upgrading to a New Software Release

System Requirements

New Features in Cisco IOS Release 12.2(15)BX

Layer 2 Tunnel Protocol Features

Broadband Protocols

Broadband DCHP Functionality

Broadband MPLS

Broadband Quality of Service

Multilink Frame Relay

IP QoS for LNS Sessions

RADIUS, AAA, and Tunnel Selection

Support for New Line Cards

Cisco 10000 Series Router MIB Enhancements

Cisco 10000 Router Software Features

Limitations and Restrictions

L2TP Tunnel Authorization

Broadband Aggregation Groups

ATM PXF Queuing

ToS Settings on a Virtual Template

QoS Service Policy on a Virtual Access Interface

CISCO-VPDN-MGMT MIB

AAA Method Lists

RBE Subinterfaces with Per Session Rate Limiting

Unshaped UBR PVCs

Controlling the Rate of Logging Messages

Testing Performance of High-Speed Interfaces

Important Notes

Provisioning for Scaling

PPPoA sessions with IP QoS Static Routes

AAA Authentication on the NME Port

Call Admission Control

Inserting a New Line Card

Open Caveats in Cisco IOS Release 12.2(15)BX

Resolved Caveats in Cisco IOS Release 12.2(15)BX

Other Caveats

Obtaining Documentation, Obtaining Support, and Security Guidelines

New Features in Cisco IOS Release 12.2(15)BX

Layer 2 Tunnel Protocol Features

Broadband Protocols

Broadband AAA

Broadband Configuration and Management


Release Notes for the Cisco 10000 Router
for Cisco IOS Release 12.2(15)BX


First Published: April 28, 2003
Revised: March 28, 2008

These release notes provide information about Cisco IOS Release 12.2(15)BX, which provides broadband aggregation features for the Cisco 10000 router.

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.

Cisco IOS Release 12.2(15)BX is based on the following releases:

Cisco IOS Release 12.2(15)BZ

Cisco IOS Release 12.2(4)BZ1

Cisco IOS Release 12.0(20)ST for features specific to the Cisco 10000 router

Cisco IOS Release 12.2B for platform-independent features

To review the release notes for Cisco IOS Release 12.0(20)ST, go to www.cisco.com and click Technical Documents > Aggregation > Cisco 10000 Series Edge Services Routers > Cisco 10000 Series ESR Release Notes > Release Notes for the Cisco 10000 Series ESR for Cisco IOS Release 12.0(20)ST.

To review the release notes for Cisco IOS Release 12.2, go to www.cisco.com and click Technical Documents. Select Release 12.2 from the Cisco IOS Software drop-down menu. Then click Cisco IOS Release Notes > Cisco IOS Release 12.2.

Contents

This document contains the following sections:

Upgrading to a New Software Release

System Requirements

New Features in Cisco IOS Release 12.2(15)BX

Cisco 10000 Router Software Features

Limitations and Restrictions

Important Notes

Open Caveats in Cisco IOS Release 12.2(15)BX

Resolved Caveats in Cisco IOS Release 12.2(15)BX

Other Caveats

Obtaining Documentation, Obtaining Support, and Security Guidelines

Upgrading to a New Software Release

For specific information about upgrading your Cisco 10000 router to a new software release, see the Cisco 10000 Series ESR Software Configuration Guide.

For general information about upgrading to a new software release, see the product bulletin Cisco IOS Upgrade Ordering Instructions located at:

http://www.cisco.com/warp/public/cc/pd/iosw/prodlit/957_pp.htm

For additional information about ordering Cisco IOS software, refer to the Cisco IOS Software Releases URL:

http://www.cisco.com/warp/public/cc/pd/iosw/iore/index.shtml

System Requirements

This broadband aggregation image requires that you have the PRE2 version (product number ESR-PRE2) of the Performance Routing Engine (PRE) installed in the Cisco 10000 chassis. To verify which PRE is installed in the router, use the show version command.

New Features in Cisco IOS Release 12.2(15)BX

The following new features and improvements are supported on the Cisco 10000 router in Cisco IOS Release 12.2(15)BX. For more information on configuring these features, see the Cisco 10000 Series ESR Broadband Aggregation Configuration Guide.

Layer 2 Tunnel Protocol Features

L2TP Access Concentrator—Cisco IOS Release 12.2(15)BX brings L2TP Access Concentrator (LAC) capability to the Cisco 10000 router. LAC capability encapsulates PPPoX sessions in L2TP tunnels, allowing wholesale providers to tunnel subscriber PPP sessions to the retail provider. PPP in L2TP sessions are encapsulated in IP packets and forwarded over any IP transport network.

LAC functionality on the router includes MTU Path Discovery, allowing the PPP client to run the path MTU discovery algorithm to adjust the maximum MTU it can send—without forcing fragmentation.

L2TP on MPLS Interfaces—L2TP on MPLS Interfaces allow the Cisco 10000 router to receive L2TP tunnelled traffic on an MPLS tag interface.

Broadband Protocols

The following new broadband protocols are supported by

L2TP Multihop

Multihop Virtual Private Dialup Network (VPDN)

PPP IPCP Subnet Negotiation

RBE Subinterface Grouping

Broadband AAA

ATM Dynamic Bandwidth Selection (Changing ATM VC parameters via Radius)

Tunnel Accounting

Tunnel Authentication via Radius on LNS

Broadband Configuration and Management

Auto-VC Provisioning

VLAN range command

PPP in L2TP Terminated (LNS) to VRF

RBE Terminated to VRF

Broadband DCHP functionality

DHCP relay VRF Aware

DHCP VPN ID Option 82

Broadband MPLS

Framed Route VRF Aware

MPLS VPN ID

Broadband DCHP Functionality

The following new broadband DCHP functionality is supported by Cisco IOS Release 12.2(15)BX:

DHCP relay VRF Aware

DHCP VPN ID Option 82

Broadband MPLS

The following new broadband MPLS features are supported by Cisco IOS Release 12.2(15)BX:

Framed Route VRF Aware

MPLS VPN ID

On Demand Address Pools (ODAP)

RBE to MPLS VPN

Broadband Quality of Service

The following new broadband Quality of Service (QoS) features are supported by Cisco IOS Release 12.2(15)BX:

802.1P (classification/marking) support for PPPoE and Ethernet interfaces

Simultaneous Input and Output Policing (IP level only)

CBWFQ for PPPoX

Multilink Frame Relay

Cisco IOS Release 12.2(15)BX supports Multilink Frame Relay (MLFR). MLFR enables service providers to bond multiple Frame Relay DLCIs into a single logical link.

IP QoS for LNS Sessions

With Cisco IOS Release 12.2(15)BX, when the Cisco 10000 router is configured as an LNS, IP QoS for LNS sessions allows a QoS service policy to be applied to a PPP session in an L2TP tunnel (LNS side only). The actions in the service policy are restricted to policing and marking.

RADIUS, AAA, and Tunnel Selection

Cisco IOS Release 12.2(15)BX includes the following RADIUS, AAA, and tunnel selection new features:

Static Domain Name/VPI/VCI override

Per-users tunnel selection

Dynamic tunnel selection for PPP sessions

Domain preauthorization for dynamic tunnel selection

Tunnel service authorization

Sessions per-tunnel limiting

L2TP tunnel sharing

Tunnel session load balancing and failover

L2TP LNS tunnel failover

L2TP Stop CCN/CDN failover

DHCP Server

RADIUS Tunnel preference for load-balancing and failover

RADIUS session/idle time-outs effective on LAC/LNS

RADIUS tunnel-assignment-ID

RADIUS gigaword support

RADIUS tagging support

RADIUS VPN ID support

Quick Connect vendor specific attributes (VSAs)

Support for New Line Cards

Cisco IOS Release 12.2(15)BX supports the following new line cards:

Cisco 10000 Router Performance Routing Engine ESR-PRE2—Next generation route processor for the Cisco 10000 router, providing 6.2 Mpps of processing power, backplane throughput of 6.4 Gbps per slot, and processor redundancy.

Cisco OC-48/STM-16 Packet over SONET line card—A full-height line card for the Cisco 10000 router that provides a trunk uplink capable of supporting up to 2.4 Gbps full duplex throughput over a standard SONET/ITU-T Synchronous Digital Hierarchy (SDH) interface, using a single mode fiber with SC connectors.

Cisco 24-port E1 line card—A full-slot line card with 24 ports which you can configure as E1 interfaces. Each port on the line card provides one or more interfaces that can be configured as framed (channelized) or unframed (unchannelized) interfaces.

8-port Fast Ethernet line card—A half-height line card containing eight 100BASE-TX ports. Each port autonegotiates between half and full duplex mode and supports 100BASE-T only. The FE line card provides the Cisco 10000 router with IEEE 802.3u-compliant 100BASE-TX Ethernet interfaces for high-density uplinks to content servers, routers, and other FE devices.

Cisco 10000 Series Router MIB Enhancements

Management Information Base (MIB) enhancements in Cisco IOS Release 12.2(15)BX provide enhanced management features that enable you to manage broadband configurations through the Simple Network Management Protocol (SNMP). These enhanced management features allow you to:

Manage and monitor Cisco 10000 resources through an SNMP-based network management system

Use SNMP set and get requests to access information in Cisco 10000 MIBs

Reduce the amount of time and system resources required to perform functions like inventory management and bulk data transfers

Other benefits include:

A standards-based technology (SNMP) for monitoring faults and performance on the router

Support for all SNMP versions (SNMPv1, SNMPv2c, and SNMPv3)

Notification of faults, alarms, and conditions that can affect services

The ability to aggregate fault and alarm information for multiple entities

For information about broadband MIB capabilities on the router, see the Cisco 10000 Series Internet Router Broadband MIB Specifications Guide (version 2) at the following URL:

http://www.cisco.com/univercd/cc/td/doc/product/aggr/10000/10kmibs/bbguides/bbgdv2/index.htm


Note MIBs for broadband configurations were first introduced in Cisco IOS Release 12.2(15)BZ, which was a limited release.


Cisco 10000 Router Software Features

Table 1 lists the leased line features based on Cisco IOS Release 12.0(19)SL, and supported in the Cisco 10000 router.

Table 1 Principal Software Features 

Administration

Cisco Discovery Protocol (CDP)

Simple Network Management Protocol (SNMP)

Availability

Route Processing Redundancy Plus (RPR+)

Encapsulations

Ethernet

High-Level Data Link Control (HDLC)

Point-to-Point (PPP)

Multilink Point-to-Point (MLP)

Multiprotocol Label Switching

Multiprotocol Label Switching Virtual Private Network (MPLS/VPN) edge services

802.1q PXF switching for ARPA encapsulation

Multicast Features

Multicast Static Routes

Multicast Routing Monitor (MRM)

Multicast Services

Internet Group Management Protocol (IGMP)

Protocol-Independent Multicast (PIM)

Distance Vector Multicast Routing Protocol (DVMRP)

Cisco Group Management Protocol (CGMP)

Unidirectional Link Routing (UDLR)

Session Directory Protocol (SDP)

Multicast Source Discovery Protocol (MSDP)

Border Gateway Protocol (BGP)

Routing Protocols

Border Gateway Protocol (BGP)

Intermediate System-to-Intermediate System (IS-IS)

Open Shortest Path First (OSPF)

Interior Gateway Routing Protocol (IGRP)

Enhanced Interior Gateway Routing Protocol (EIGRP)

Routing Information Protocol (RIP)

Policy Based Routing (PBR)

Security Features

Standard and extended access lists

Authentication, Authorization, and Accounting (AAA)

Kerberos authentication and client support on Telnet

RADIUS authentication

Terminal Access Controller Access Control System Plus (TACACS+)


Limitations and Restrictions

This section describes any limitations and restrictions that you should review before you use the Cisco 10000 router.

L2TP Tunnel Authorization

Cisco 10000 router supports L2TP tunnel authorization. However, RADIUS does not provide attributes for such parameter values as L2TP tunnel timeouts, L2TP tunnel hello intervals, and L2TP tunnel receive window size. When the Cisco 10000 router does not receive a RADIUS attribute for a parameter, the router uses the default value.

Broadband Aggregation Groups

Cisco IOS Release 12.2(15)BX does not support the configuration of Broadband Aggregation (BBA) groups using RADIUS. You must configure BBA groups manually.

ATM PXF Queuing

If you intend to disable ATM PXF queuing, to ensure reliable operation, you must enter the no atm pxf queuing mode command before you configure any VCs on an interface. If you have already configured VCs on an interface, and you need to disable ATM PXF queuing, remove the VCs from the configuration and then change the ATM PXF queuing mode.

ToS Settings on a Virtual Template

If you configure a ToS setting on a virtual template on the Cisco 10000 router, the inner (users) IP ToS settings are reflected in the outer IP TOS settings of the L2TP.

QoS Service Policy on a Virtual Access Interface

If you apply an output QoS service policy on a virtual-access interface, and that virtual access interface is L2TP tunneled (When the router is configured as an LNS, for example) and the service policy indicates that the TOS or DSCP bits should be set (with the set ip command, for example), the router sends the packets as-is, without changing the IP Precedence bits or DSCP bits. The outer header gets the correct value, but the inner header is not changed.

CISCO-VPDN-MGMT MIB

SNMP limits the size of Virtual Private Dialup Network (VPDN) template names to 128 characters. This affects the functionality of the CISCO-VPDN-MGMT MIB. Due to this restriction, if any template name (cvpdnTemplateName) in the cvpdnTemplateTable exceeds 128 characters, you cannot use an SNMP getmany request to retrieve any table entries. Instead, you must use individual getone requests to retrieve each template name that does not exceed 128 characters. For more information, see the Cisco 10000 Series ESR Broadband MIB Specifications Guide.

AAA Method Lists

Cisco IOS Release 12.2(14)BX supports a maximum of 99 authentication, authorization, and accounting (AAA) method lists. If you configure more than 99 AAA method lists using the aaa authentication ppp or aaa authorization network command, traceback messages appear on the console.

RBE Subinterfaces with Per Session Rate Limiting

With Cisco IOS Release 12.2(15)BX, the Cisco 10000 router supports a maximum of 2,000 RBE RFC 1483 routed subinterfaces with per-session rate limiting.

Unshaped UBR PVCs

Cisco IOS Release 12.2(15)BX supports a maximum of 8000 unshaped UBR VCs on the OC-12 ATM line card. An unshaped UBR PVC is a PVC that has no rate configured on it. You can configure up to 16,000 shaped UBR VCs per port on the OC-12 line card if you configure the VCs with a shaped rate less than 299 Mbps.

Controlling the Rate of Logging Messages

It is important that you limit the rate that system messages are logged by the Cisco 10000 router. This helps to avoid a situation in which the router becomes unstable and the CPU is overloaded. To control the output of messages from the system, use the logging rate-limit command.

We recommend that you configure the logging rate-limit command as follows:

Router(config)# logging rate-limit console all 10 except critical

This rate-limits all messages to the console to 10 per second, except for messages with critical priority (level 3) or greater.

For more information on the logging rate-limit command, see the Cisco IOS Configuration Fundamentals Command Reference.

Testing Performance of High-Speed Interfaces

Cisco IOS software running on the Cisco 10000 router has multiple queues for all classes of traffic over high-speed interfaces. The software selects a queue based on the source and destination address for the packet. This ensures that a traffic flow always uses the same queue and the packets are transmitted in proper order.

When the Cisco 10000 router is installed in a real network, the high-speed interfaces work efficiently to spread traffic flow equally over the queues. However, using single traffic streams in a laboratory environment may result in less-than-expected performance.

Therefore, to ensure accurate test results, you should test the throughput of the gigabit Ethernet, POS, or ATM uplink with multiple source or destination addresses.


Tip To determine if traffic is being properly distributed, use the show hardware pxf cpu queue command.


Important Notes

This section contains important issues that you should be aware of with Cisco IOS Release 12.2(15)BX.

Provisioning for Scaling

Cisco engineers have identified several configuration parameters that enable the Cisco 10000 router to scale the configuration. Please ensure that you have the following commands and parameters in your configuration. For more information about configuring the Cisco 10000 router for the highest scaling, see the Cisco 10000 Series ESR Broadband Aggregation Feature Guide.

PPPoA sessions with IP QoS Static Routes

To scale to 32,000 PPPoA with IP QoS enabled, you must limit the number of IP QoS static routes to 4,000 unidirectional QoS static routes.

AAA Authentication on the NME Port

If you use AAA authentication on the NME port, set both the in and out interface hold queues to 4096. For example:

Router(config)# int fa 0/0/0
Router(config-if)# hold-queue 4096 in
Router(config-if)# hold-queue 4096 out

Call Admission Control

We recommend that you set the Call Admission Control (CAC) to a maximum of 95. For example:

Router(config)# call admission limit 95

Inserting a New Line Card

Unlike other Cisco routers, if you insert a new or different line card into a Cisco 10000 chassis slot that previously had a line card installed, the line card initially reports that it is administratively up.

Open Caveats in Cisco IOS Release 12.2(15)BX

Table 2 describes Open Caveats in Cisco IOS Release 12.2(15)BX.

Table 2 Open Caveats in Cisco IOS Release 12.2(15)BX 

Caveat
Description

CSCdy79740

If 32,000 PPPoA sessions, 99 VRFs, RADIUS authentication, and the per vrf aaa case command are configured on the Cisco 10000 router, and you insert or remove a line card, the PPPoA sessions go down within 45 seconds of the OIR event. When this happens, the following traceback message may appear on the console:

[%IPRT-4-ROUTECOUNTNEGATIVE]

Workaround: There is currently no workaround.

CSCea35508

The throughput of Frame Relay traffic may be up to 5 percent lower than the maximum possible throughput.

Workaround: There is currently no workaround.

CSCea37038

If APS is configured using the aps force atm <slot/subslot/port> from protect command on the 4-port OC-3 line card or the single-port OC-12 ATM line card, and a signal failure is received on the port of either line card, the output of the show interface atm <slot/subslot/port> command may indicate the interface is up instead of down.

Workaround: Clear the force state as soon as the port has been designated as working, by entering the aps clear atm <slot/subslot/port> command.

CSCea41145

The output of the show vpdn tunnel summary command fails to display tunnels that have no-session timeout (set using the l2tp timeout no-session timeout never command).

Workaround: Do not set the no session timeout to never. In the following example, the no-session timeout is set to 30:

router# l2tp timeout no-session 30

CSCea45943

In a Cisco 10000 chassis with redundant PREs, after a switch-over from the primary PRE to the secondary PRE, the traffic rate of the single-port OC-12 ATM line card is low.

Workaround: There is currently no workaround.

CSCea46149

If you connect a test analyzer to the 6-port channelized T3 line card, and you configure a T1 under a T3 controller, and the line card and the test analyzer are both set to ESF framing, the T1 does not come up.

Workaround: There is currently no workaround.

CSCea51673

If you enter the show ip dhcp pool command, and if the output to the console is paused (requiring that you hit any key to view the second page of that output), the statistics may be incorrect.

Workaround: You can avoid this problem by performing one of the following:

Set the length of the console (or VTY) to zero by entering the term length 0 command.

Set the length of the console to be greater than the output of the command (based on configuration and pool usage).

When the output pauses at the --More-- prompt, respond immediately to allow the command output to complete.

CSCea52741

If the Cisco 10000 router reloads unexpectedly, any ODAP subnets allocated from the Network Registrar (CNR) remain marked as Leased (at the CNR).

Workaround: There is currently no workaround to this problem. However, if this should occur, the subnets are released when the Lease-time expires, or they may be released manually through the CNR Command Line Interface (CLI).

CSCea67815

While disabling 32,000 sessions over 10,000 L2TP tunnels on a Cisco 10000 router configured as an LNS with RADIUS AAA accounting enabled, the router may terminate the remaining sessions due to the overwhelming number of RADIUS records generated by this event. If this occurs, the following message may appear on the console:

%ALIGN-3-TRACE

Workaround: There is currently no workaround.

CSCea73477

Packet counters and debug messages on the Cisco 10000 router cannot be used to accurately count or view ILMI keepalive messages. This is because basic ILMI configurations generate bursts of ILMI transactions between the Cisco 10000 and adjacent ATM switches.

For example, if you connect an OC-3 ATM line card that is installed in a Cisco 10000 router to a Cisco LS1010 ATM switch, and you enable debugging using the debug atm ilmi command, the packet counters for the ILMI PVC increment to match the bursts of packets.

Workaround: There is currently no workaround for this problem. However, this problem does not affect the performance or operation of the router.

CSCea77321

If the primary PRE fails, and the primary PRE switches over to the secondary (redundant) PRE, ODAP subnets that had been allocated to the previously active primary PRE remain marked as Leased by the Access Registrar (AR)

Workaround: Release the sessions associated with the subnets at the AR.

CSCea78453

In rare circumstances, if you enter the hw-module slot <slot> shutdown command followed by the no card command, the router reloads unexpectedly.

Workaround: There is currently no workaround for this problem. However, this problem rarely occurs, and you are unlikely to experience it.

CSCea78489

If you load and run the c10k2-eboot-mz image on the Cisco 10000 router, and an AAA server group is defined in the startup configuration, the following message appears on the console:

% Image does not support any AAA protocols.
% Image does not support any AAA protocols.

Workaround: There is currently no workaround. This message is generated from the eboot image and can be ignored.

CSCea78861

If you enter the ip verify unicast rpf command for a virtual template, the calls-per-second rate is reduced.

Workaround: There is currently no workaround for this problem. However, this problem only reduces the calls-per-second rate and does not otherwise affect the performance of the router.

CSCea78890

If you perform a tftp copy of a running configuration greater than 5 MB to a tftp server, the copy fails.

Workaround: Copy the running configuration to the bootflash and then copy the configuration from the bootflash to the tftp server.

CSCea78899

If you have an OC-48 line card installed in the Cisco 10000 router that is transmitting and receiving traffic, and you remove it and install a channelized CT3 line card, and you then remove the channelized CT3 line card and re-insert the OC-48 line card, the POS interface flaps continuously.

Workaround: Reload the line card.

CSCea81015

If you configure the management Ethernet port (fastethernet 0/0/0) on the PRE2 front panel using the ip address dhcp command, the port does not acquire an IP address.

Workaround: Configure the fastethernet 0/0/0 interface with a static IP address.

CSCea82309

If you open two configuration sessions from two consoles on the PRE-2, a failure message appears on the consoles stating that simultaneous configuration is not supported.

Workaround: There is currently no workaround.


Resolved Caveats in Cisco IOS Release 12.2(15)BX

This section describes caveats that were fixed in Cisco IOS Release 12.2(15)BX:

CSCdv59309

Two vulnerabilities exist in the virtual private dial-up network (VPDN) solution when Point-to-Point Tunneling Protocol (PPTP) is used in certain Cisco IOS releases prior to 12.3. PPTP is only one of the supported tunneling protocols used to tunnel PPP frames within the VPDN solution.

The first vulnerability is a memory leak that occurs as a result of PPTP session termination. The second vulnerability may consume all interface descriptor blocks on the affected device because those devices will not reuse virtual access interfaces. If these vulnerabilities are repeatedly exploited, the memory and/or interface resources of the attacked device may be depleted.

Cisco has made free software available to address these vulnerabilities for affected customers.

There are no workarounds available to mitigate the effects of these vulnerabilities.

This advisory is posted at http://www.cisco.com/warp/public/707/cisco-sa-20080326-pptp.shtml

CSCdx77497

Previously, if you pressed the break key, you could not enter ROMMON mode during the first 30 seconds after poweron. This problem has been fixed.

CSCea29188

Previously, the show facility-alarm status command did not display the status of the external alarm contact for each alarm. This problem has been fixed.

CSCea32824

Previously, if you typed the no tftp-server flash: command followed by a question mark (?), and then pressed the Enter key on the console, the CLI did not list more options for the command. This problem has been fixed.

CSCea32864

Previously, if a T1 was configured under a T3 on channelized OC-12 line card, and the far end was sending LOF to near end, no alarms appeared to indicate that the T1 was down. This problem has been fixed.

CSCea33965

Previously, if you configured the 4-port channelized STM-1 line card or the channelized OC-12 line card under SDH framing, and the j1 path trace buffer length was set to 16 bytes, messages inserted from a Hewlett-Packard Omniber test analyzer were not received on the Cisco 10000 router as expected.

Also, when the j1 path trace buffer length was set to 64 bytes, Tx/Rx path trace messages from the Cisco 10000 router to test analyzer, and from the test analyzer to the Cisco 10000 router were not received as expected. This problem has been fixed.

CSCea33996

Previously, if you configured the channelized OC-12 line card with SF framing on the near and far end, the far end experienced a loss-of-frame (LOF) alarm. This problem has been fixed.

CSCea34409

Previously, if you configured a controller on an 8-port E3/DS3 line card as E3, the Ethernet interfaces were ignored during when the router booted, and the interfaces were not configured after bootup. This problem has been fixed.

CSCea35238

Previously, the Cisco 10000 router reloaded unexpected if you enter the show tag tdp neighbor command. This problem has been fixed.

CSCea36590

Previously, in a laboratory test, when a Hewlett-Packard Omniber test analyzer was connected to a channnelized OC-12 line card that was configured for SDH, the au4-tug3 controllers 2 and 3 did not connect. This problem has been fixed.

CSCea36915

Previously, the CLI for the 2-port channelized OC-12 line card showed the card slot <x/x> command as an available command when it was not supported. This problem has been fixed.

CSCea39305

Previously, after the PRE initially loaded, if you entered a command on the file system of the secondary PRE, any error was returned as "unknown" instead of the correct error message text. This problem has been fixed.

CSCea42120

Previously, the internal interface FastEthernet 0/0/1 appeared in the output of the show ip interface command. This problem has been fixed.

CSCea42283

Previously, if you shut down the 4-port channelized STM-1 line card au-3 c-3 controller, traceback messages appeared on the console. This problem has been fixed.

CSCuk27655

GRE implementation of Cisco IOS is compliant with RFC2784 and RFC2890 and backward compatible with RFC1701.

Other Caveats

This section includes caveats listed in previous release notes that are regarded as resolved because they are either unreproducible, they were reported in error, or they do not affect the behavior of the Cisco 10000 router. If a caveat listed in this section causes problems, contact Cisco customer service.

CSCea33889

Previously, it was reported that the output of the show controller e1 command showed the status of the E1 controller on the 24-port channelized E1/T1 line card as down when it was actually up. We have been unable to reproduce this problem.

Obtaining Documentation, Obtaining Support, and Security Guidelines

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

New Features in Cisco IOS Release 12.2(15)BX

The following new features and improvements are supported on the Cisco 10000 router in Cisco IOS Release 12.2(15)BX. For more information on configuring these features, see the Cisco 10000 Series ESR Broadband Aggregation Configuration Guide.

Layer 2 Tunnel Protocol Features

L2TP Access Concentrator—Cisco IOS Release 12.2(15)BX brings L2TP Access Concentrator (LAC) capability to the Cisco 10000 router. LAC capability encapsulates PPPoX sessions in L2TP tunnels, allowing wholesale providers to tunnel subscriber PPP sessions to the retail provider. PPP in L2TP sessions are encapsulated in IP packets and forwarded over any IP transport network.

LAC functionality on the router includes MTU Path Discovery, allowing the PPP client to run the path MTU discovery algorithm to adjust the maximum MTU it can send—without forcing fragmentation.

L2TP on MPLS Interfaces—L2TP on MPLS Interfaces allow the Cisco 10000 router to receive L2TP tunnelled traffic on an MPLS tag interface.

Broadband Protocols

The following new broadband protocols are supported by Cisco IOS Release 12.2(15)BX:

L2TP Multihop

Multihop Virtual Private Dialup Network (VPDN)

PPP IPCP Subnet Negotiation

RBE Subinterface Grouping

Broadband AAA

The following new broadband AAA features are supported by Cisco IOS Release 12.2(15)BX:

ATM Dynamic Bandwidth Selection (Changing ATM VC parameters via Radius)

Tunnel Accounting

Tunnel Authentication via Radius on LNS

Broadband Configuration and Management

The following new broadband configuration and management features are supported by Cisco IOS Release 12.2(15)BX:

Auto-VC Provisioning

VLAN range command

PPP in L2TP Terminated (LNS) to VRF

RBE Terminated to VRF