Release Notes for Cisco 2500 Series for Cisco IOS Release 12.0 T December 13, 1999 These release notes for Cisco 2500 series support Cisco IOS Release 12.0 T, up to and including Release 12.0(7)T. These release notes are updated as needed to describe new features, memory requirements, hardware support, software platform deferrals, and changes to the microcode or modem code and related documents. For a list of the software caveats that apply to Release 12.0(7)T, see the Caveats for Cisco IOS Release 12.
System Requirements System Requirements This section describes the system requirements for Release 12.
System Requirements 2. The number in the “In” column indicates the Cisco IOS release when the image was first introduced. For example, (4) means an image was introduced in Release 12.0(4)T. If a cell in this column is empty, the interface was included in the initial base release. 3. 6 MB in Release 12.0(4)T. 4 MB in Release 12.0(3)T and earlier releases. 4. 8 MB in Release 12.0(4)T and earlier releases. 5. 8 MB in Releases 12.0(3)T and earlier releases. 6. 4 MB in Release 12.0(4)T and earlier releases. 7.
System Requirements Table 2 Supported Interfaces for the Cisco 2500 Series (continued) Interface, Network Module, or Data Rate Product Description Platforms Supported WAN Interfaces EIA/TIA-232 Cisco 2500 series EIA/TIA-449 Cisco 2500 series EIA-530 Cisco 2500 series X.21 Cisco 2500 series V.
System Requirements Table 3 Feature Sets Supported by the Cisco 2500 Series (continued) Feature Set Image Names Feature Set Matrix Term Software Image Platforms IP/FW Plus IPSec 56 Plus3, IPSec 564 c2500-ios56i-l Cisco 2500 series IP Plus Plus c2500-is-l Cisco 2500 series IP Plus 405 Plus 406 c2500-is40-l Cisco 2500 series 5 7 c2500-is56-l Cisco 2500 series IP Plus 56 Plus 56 IP Plus IPSec 56 Plus, IPSec 56 c2500-is56i-l Cisco 2500 series IP/H323 Basic c2500-ix-l Cisco 2500 ser
System Requirements States may require an export license. Customer orders may be denied or subject to delay due to United States government regulations. When applicable, the purchaser or the user must obtain local import and use authorizations for all encryption strengths. Contact your sales representative or distributor for more information, or send an e-mail to export@cisco.com. Table 4, Table 5, and Table 6 list the features and feature sets supported by the Cisco 2500 series in Cisco IOS Release 12.
System Requirements Table 4 Feature List by Feature Set for the Cisco 2500 Series, Part 1 (continued) Feature Sets Features IS-to-IS Multiarea Support In IP IP/FW IP/FW Plus IPSec 56 IP Plus IP Plus 401 IP Plus IP Plus 561 IPSec 56 (5) Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes OSPF Point to Multipoint OSPF Packet Pacing (1) Protocol-Independent Multicasts (PIM) Version 2 WCCP v2 Support (3) Yes
System Requirements Table 4 Feature List by Feature Set for the Cisco 2500 Series, Part 1 (continued) Feature Sets In IP IP/FW IP/FW Plus IPSec 56 IP Plus IP Plus 401 IP Plus IP Plus 561 IPSec 56 X.
System Requirements Table 4 Feature List by Feature Set for the Cisco 2500 Series, Part 1 (continued) Feature Sets Features In Named Method Lists for AAA Authentication & Accounting IP IP/FW IP/FW Plus IPSec 56 IP Plus IP Plus 401 IP Plus IP Plus 561 IPSec 56 Yes Yes Yes Yes Yes Yes Yes No No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No No No No No No No Switching Cisco IOS STP Enhancements (1) WAN Optimization DRP Server Agent Enhancements WAN Services Alwa
System Requirements Table 5 Feature List by Feature Set for the Cisco 2500 Series, Part 2 Feature Sets IP/IPX/AT/ DEC IP/IPX/AT/ DEC/ FW Plus IP/IPX/AT/ DEC Plus Enterprise/ Enterprise/ APPN Plus FW Plus IPSec 561 IPSec 56 In IP/H.323 IP/IBM/ APPN1 Airline Product Set Enhancements (5) Yes Yes Yes Yes Yes Yes Yes DNS-Based X.
System Requirements Table 5 Feature List by Feature Set for the Cisco 2500 Series, Part 2 (continued) Feature Sets IP/H.
System Requirements Table 5 Feature List by Feature Set for the Cisco 2500 Series, Part 2 (continued) Feature Sets Features In Quality of Service IP/H.
System Requirements Table 5 Feature List by Feature Set for the Cisco 2500 Series, Part 2 (continued) Feature Sets Features In IP/H.
System Requirements Table 6 Feature List by Feature Set for the Cisco 2500 Series, Part 3 (continued) Feature Set In Enterprise Plus Enterprise Plus IPSec 56 Dynamic Multiple Encapsulations Protocol (7) Yes L2TP Dial-Out (5) RIP Enhancements (1) FRAD LAN/ FRAD/ OSPF LAN/ FRAD Remote Access Server ISDN Distributed Director Yes No No No No No Yes Yes Yes No No No Yes No No Yes Yes Yes Yes Yes Yes Yes No Bridging Code Rework Yes Yes Yes Yes Yes No Yes No DLSw
System Requirements Table 6 Feature List by Feature Set for the Cisco 2500 Series, Part 3 (continued) Feature Set Enterprise Plus Enterprise Plus IPSec 56 Entity MIB Yes Expression MIB Features In FRAD LAN/ FRAD/ OSPF LAN/ FRAD Remote Access Server ISDN Distributed Director Yes Yes Yes Yes Yes Yes No Yes Yes Yes Yes Yes Yes Yes No ISDN MIB RFC 2127 (1) Yes Yes No No No No Yes No Migration of Distributed Director (3) Yes Yes Yes Yes Yes Yes Yes No Multicast
System Requirements Table 6 Feature List by Feature Set for the Cisco 2500 Series, Part 3 (continued) Feature Set In Enterprise Plus Enterprise Plus IPSec 56 CLI Search String (1) Yes Parse Bookmarks (1) Subnetwork Bandwidth Manager (5) FRAD LAN/ FRAD/ OSPF LAN/ FRAD Remote Access Server ISDN Distributed Director Yes Yes Yes Yes Yes Yes No Yes Yes Yes Yes Yes Yes Yes No Yes Yes No No No No Yes No Airline Product Set (ALPS) Yes Yes Yes Yes Yes Yes Yes No AL
System Requirements Table 6 Feature List by Feature Set for the Cisco 2500 Series, Part 3 (continued) Feature Set Features In Enterprise Plus Enterprise Plus IPSec 56 Yes FRAD LAN/ FRAD/ OSPF LAN/ FRAD Remote Access Server ISDN Distributed Director Yes Yes No No No No No Yes Yes No No No No No No WAN Optimization DRP Server Agent Enhancements WAN Services Always On Dynamic ISDN Annex G (3) Yes Yes Yes Yes Yes Yes Yes No Async over UDP (3) Yes Yes Yes Yes Yes
New and Changed Information New and Changed Information The following sections list the new hardware and software features supported by the Cisco 2500 series for Release 12.0 T: New Software Features in Release 12.0(7)T The following new software enhancements are supported by the Cisco 2500 series for Release 12.0(7)T and later releases: One New Feature Set One new feature set has been created for the Cisco 2500 series in Release 12.
New and Changed Information For CBWFQ, the weight for a packet belonging to a specific class is derived from the bandwidth you assigned to the class when you configured it. Therefore, the bandwidth assigned to the packets of a class determines the order in which packets are sent. All packets are serviced fairly based on weight; no class of packets may be granted strict priority.This scheme poses problems for voice traffic that is largely intolerant of delay, especially variation in delay.
New and Changed Information are replacing their traditional SNA network with an IP infrastructure that supports traffic from a variety of clients, using a variety of protocols, requiring access to applications on a variety of platforms, including SNA applications on Enterprise servers.
New and Changed Information When this feature is enabled, Multichassis Multilink PPP (MMP) Layer 2 Forwarding (L2F) tunnels can still be created and established. New Software Features in Release 12.0(5)T The following new software enhancements are supported by the Cisco 2500 series in Release 12.0(5)T and later releases. Airline Product Set Enhancements The Airline Product Set Enhancements feature, ALPS phase III, provides support for Mapping of Airline Traffic over Internet Protocol (MATIP).
New and Changed Information DNS-Based X.25 Routing Managing a large TCP/IP network requires accurate and up-to-date maintenance of IP addresses and X.121 address mapping information on each router database in the network. Currently, this data is managed manually. Because these addresses are constantly being added and removed in the network, the routing table of every router frequently needs to be updated, which is a time-consuming and error-prone task. X.
New and Changed Information Cisco IOS software-based, integrated firewall solution scales to meet the bandwidth and performance requirements of any network. It also maximizes a Cisco router investment by combining multiprotocol routing functionality with sophisticated security policy enforcement throughout the network.
New and Changed Information reports, if any. You then troubleshoot your multicast environment as normal, perhaps using the mtrace command from the source to the Test Receiver. If the show command displays no error reports, the Test Receiver is receiving test packets without loss or duplicates from the Test Sender. PGM Router Assist The PGM Router Assist feature allows Cisco routers to support the optimal operation of Pragmatic General Multicast (PGM).
New and Changed Information X.25 Remote Failure Detection Static routes are used over a packet-switched data network in order to reduce volume-based costs of the network. Until now, if two routers were connected via multiple X.25 links (a primary and a secondary), a router could not detect failure of the primary link. If a failure occurred, the data was not transferred to the second link because X.25 was unable to determine whether remote links were up or down. Therefore X.
New and Changed Information Annex-G (X.25 over Frame Relay) Annex G (X.25 over Frame Relay) facilitates the migration from an X.25 backbone to a Frame Relay backbone by permitting encapsulation of CCITT X.25/X.75 traffic within a Frame Relay connection. Annex G has developed to accommodate the many Cisco customers in Europe, where X.25 still is a popular protocol. With Annex G, the process of transporting X.25 over Frame Relay has been simplified, by allowing direct X.
New and Changed Information Using routing table intelligence in the network infrastructure, DistributedDirector transparently redirects end user service requests to the closest responsive server, as determined by client-to-server topological proximity and/or client-to-server response times, resulting in increased access performance seen by the end user and reduced transmission costs. For Cisco IOS Release 12.0(3)T, the functionality of DistributedDirector from 11.1 IA is migrated to 12.0 T.
New and Changed Information For Frame Relay, a new interface command, frag-pre-queuing, has been added that allows you to set the queuing to be performed after the data segmentation. The command is available for Frame Relay interfaces only. The syntax for this new command is the following: frag-pre-queuing no frag-pre-queuing By default, this command is enabled, which allows only FCFS queuing at the interface level.
New and Changed Information Multimedia Conference Manager Use the Multimedia Conference Manager to enable your current internetwork to route bit-intensive data such as audio telephony, video and audio telephony, and data conferencing using existing telephone and ISDN links, without degrading the network’s current level of service. The Multimedia Conference Manager feature provides H.323 application options previously unavailable. Using Multimedia Conference Manager, you can implement H.
New and Changed Information Process MIB The addition of the CISCO-PROCESS-MIB and changes to the CISCO-MEMORY-POOL-MIB allow the retrieval of additional CPU and memory statistics and their reporting by SNMP. The CISCO-PROCESS-MIB provides CPU 5-second, 1-minute, and 5-minute statistics. In addition, this MIB provides CPU utilization and memory allocation/deallocation statistics for each process on each CPU listed in the CISCO-PROCESS-MIB.
New and Changed Information • Masquerade or protection against attempting management operations not authorized for some principal by assuming the identity of another principal that has the appropriate authorizations • Message Stream Modification or protection against messages getting maliciously re-ordered, delayed or replayed in order to effect unauthorized management operations • Disclosure or protection against eavesdropping on the exchanges between SNMP engines.
New and Changed Information WCCPv2 provides enhancements to WCCPv1, including: • Multihome router support enables multiple co-located, WCCP-enabled routers to share a cache cluster. • Improved security enables MD5 digital signature authentication (RFC 1321) to be used in Cache Engine/WCCP router communications. • Redirection of non-port 80 traffic enables WCCP-enabled routers to transparently redirect traffic based on any TCP port (for example, FTP and NNTP traffic), in addition to HTTP traffic.
New and Changed Information The RSM module can either route or bridge Token Ring packets, thereby functioning as a router or as a bridge. In Cisco IOS Release 12.0(1)T, both APPN and DLSW+ are supported on the RSM's Token Ring VLANs. RSRB, however, is not supported on the RSM. Mobile IP Mobile IP provides users the freedom to roam beyond their home subnet while consistently maintaining their home IP address.
New and Changed Information Currently, IP and IPX extended access lists are the only functions that can use time ranges. The time range allows the network administrator to define when the permit or deny statements in the access list are in effect. Prior to this feature, access list statements were always in effect once they were applied. Both named or numbered access lists can reference a time range.
New and Changed Information IOS STP Enhancements IOS Spanning Tree Protocol enhancements broaden the original IOS STP implementation with increased port identification capability, improved path cost determination, and support for a new VLAN bridge spanning-tree protocol.
Important Notes Normally, a management station is not notified when an Asynchronous Transfer Mode (ATM) PVC goes down. The ATM PVC Trap Support feature enables an agent to send the required PVC traps for this notification. It also provides support for these PVC status tables: atmCurrentlyFailingPVclTable and atmInterfaceExtTable. Important Notes The following sections contain important notes about Cisco IOS Release 12.0 that can apply to the Cisco 2500 series.
Important Notes Attackers can cause Cisco IOS devices to repeatedly fail and reload, resulting in a completely disabled Cisco IOS device that needs to be reconfigured by its administrator. Some Cisco IOS devices have been observed to hang instead of failing when attacked. These devices do not recover until they are manually restarted by reset or power cycling. An administrator must personally visit an attacked, hung device to restart it, even if the attacker is no longer actively sending any traffic.
Important Notes • Cisco DistributedDirector Affected software versions, which are relatively new, are not necessarily available on every device listed above. If you are not running Cisco IOS software, you are not affected by this problem. The following Cisco devices are not affected: • 700 dialup routers (750, 760, and 770 series) • Catalyst 1900, 2800, 2900, 3000, and 5000 LAN switches are not affected, except for some versions of the Catalyst 2900XL.
Important Notes Give the URL of this notice (http://www.cisco.com/warp/public/770/iossyslog-pub.shtml) as evidence for a free update. Non-contract customers must request free updates through the TAC. Please do not contact either “psirt@cisco.com” or “security-alert@cisco.com” for software updates. Workarounds You can work around this vulnerability by preventing any affected Cisco IOS device from receiving or processing UDP datagrams addressed to its port 514.
Important Notes Listing all possible addresses—especially all possible broadcast addresses—to which attack packets may be sent is complicated. If you do not need to forward any legitimate syslog traffic received on an interface, you can block all syslog traffic arriving on that interface.
Important Notes Table 7 Affected and Repaired Software Versions (continued) Special Fix1 First Fixed Interim Release2 Fixed Maintenance Release3 12.0(2.3)S, 27-DEC-1998 12.0(2)S5, 18-JAN-1999 Cisco IOS Major Release Description 12.0 S ISP support; 7200, RSP, GSR 12.0 DB 12.0 for Cisco 6400 universal access concentrator node switch processor (lab use) 12.0(1)W 12.0 for Catalyst 8500 and LS1010 12.0(1)W5(5a) 12.0(1)W5(5.15) and 12.0(1a)W5(5b ) (LS1010 platform only) 12.
Caveats Deprecated MIBs Old Cisco Management Information Bases (MIBs) will be replaced in a future release. OLD-CISCO-* MIBs are currently being migrated into more scalable MIBs—without affecting existing Cisco IOS products or NMS applications. You can update from deprecated MIBs to the replacement MIBs as shown inTable 8.
Related Documentation Related Documentation The following sections describe the documentation available for the Cisco 2500 series. These documents consist of hardware and software installation guides, Cisco IOS configuration and command references, system error messages, feature modules, and other documents. Documentation is available as printed manuals or electronic documents, except for feature modules, which are available online on CCO and the Documentation CD-ROM.
Related Documentation Platform-Specific Documents These documents are available for the Cisco 2500 series on CCO and the Documentation CD-ROM: • Cisco 2524 and Cisco 2525 Public Network Certification • Installing WAN Modules in the Cisco 2524 and Cisco 2525 Routers • Cisco 2524 and Cisco 2525 Router User Guide • Release Notes for Cisco 2500 Series Routers • Redundant Power Systems On CCO at: Technical Documents: Documentation Home Page: Access Servers and Access Routers: Modular Access Routers: C
Related Documentation On CCO at: Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.0:Configuration Guides and Command References On the Documentation CD-ROM at: Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.0: Configuration Guides and Command References Release 12.0 Documentation Set Table 9 describes the contents of the Cisco IOS Release 12.
Related Documentation Table 9 Cisco IOS Software Release 12.
Related Documentation Table 9 Cisco IOS Software Release 12.
Obtaining Documentation Obtaining Documentation World Wide Web You can access the most current Cisco documentation on the World Wide Web at http://www.cisco.com, http://www-china.cisco.com, or http://www-europe.cisco.com. Documentation CD-ROM Cisco documentation and additional literature are available in a CD-ROM package, which ships with your product. The Documentation CD-ROM is updated monthly. Therefore, it is probably more current than printed documentation.
Obtaining Technical Assistance You can access Cisco.com in the following ways: • WWW: www.cisco.com • Telnet: cco.cisco.com • Modem using standard connection rates and the following terminal settings: VT100 emulation; 8 data bits; no parity; and 1 stop bit. – From North America, call 408 526-8070 – From Europe, call 33 1 64 46 40 82 You can e-mail questions about using Cisco.com to cco-team@cisco.com.
Obtaining Technical Assistance Software Configuration Tips on the Cisco Technical Assistance Center Home Page If you have a Cisco.com log-in account, you can access the following URL, which contains links and tips on configuring your Cisco products: http://www.cisco.com/public/technotes/tech_sw.html This URL is subject to change without notice. If it changes, point your Web browser to Cisco.com, press Login, and click on this path: Technical Assistance Center: Technical Tips.
Obtaining Technical Assistance This document is to be used in conjunction with the documents listed in the “Related Documentation” section on page 43.
Obtaining Technical Assistance Release Notes for Cisco 2500 Series for Cisco IOS Release 12.0 T 52 78-5563-07 Rev.
