Release Notes for the Catalyst 4500-X Series Switches, Cisco IOS XE 3.3.xSG
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Release Notes for the Catalyst 4500X Series Switches, Cisco IOS XE Release 3.3.xSG
Features Not Supported on the Cisco Catalyst 4500X Series Switches
Supported Hardware on the Catalyst 4500X Series Switches
New Software Features in Release IOS XE 3.3.1SG
New Hardware Features in Release IOS XE 3.3.1SG
New Software Features in Release IOS XE 3.3.0SG
Cisco IOS XE to Cisco IOS Version Number Mapping
Open Caveats for Cisco IOS XE Release 3.3.2SG
Resolved Caveats for Cisco IOS XE Release 3.3.2SG
Open Caveats for Cisco IOS XE Release 3.3.1SG
Resolved Caveats for Cisco IOS XE Release 3.3.1SG
Open Caveats for Cisco IOS XE Release 3.3.0SG
Resolved Caveats for Cisco IOS XE Release 3.3.0SG
Troubleshooting at the System Level
Obtaining Documentation and Submitting a Service Request
Release Notes for the Catalyst 4500X Series Switches, Cisco IOS XE Release 3.3.xSG
Current release: IOS XE 3.3.2SG—November 1, 2012
Prior releases: IOS XE 3.3.1SG and 3.3.0SG
This release note describes the features, modifications, and caveats for the Cisco IOS XE 3.3.1SG software on the Catalyst 4500X Series switch,
The Cisco Catalyst 4500-X Series offers key innovations, including:
- Up-to 800 Gbps of switching capacity.
- Modular uplink and auto-detect 10 Gigabit Ethernet and 1 Gigabit Ethernet ports.
- Comprehensive virtualization capabilities, including VRF-lite and EVN.
- Redundant hot swappable fans and power supplies with AC to DC, and DC to AC failover remove single point of failure in network.
- Enhanced application monitoring through Flexible NetFlow and eight sessions of line rate bidirectional Switched Port Analyzer (SPAN)/Remote Switched Port Analyzer (RSPAN).
- Cisco TrustSec™ technology as well as robust control plane policing (CoPP) to address denial of service attacks.
Support for Cisco IOS XE Release 3.3.0SG, the default image, follows the standard Cisco Systems® support policy, available at
http://www.cisco.com/en/US/products/products_end-of-life_policy.htmlFor more information on the C4500X switch, visit the following URL:
http://www.cisco.com/go/cat4500/docsCisco IOS Software Packaging
The Enterprise Services image supports all Cisco Catalyst 4500 Series software features based on Cisco IOS Software, including enhanced routing.
The IP Base image supports Open Shortest Path First (OSPF) for Routed Access, Enhanced Interior Gateway Routing Protocol (EIGRP) "limited" Stub Routing, Nonstop Forwarding/Stateful Switchover (NSF/SSO), and RIPv1/v2. The IP Base image does not support enhanced routing features such as BGP, Intermediate System-to-Intermediate System (IS-IS), Internetwork Packet Exchange (IPX), AppleTalk, Virtual Routing Forwarding (VRF-lite), GLBP, and policy-based routing (PBR).
The LAN Base image complements the existing IP Base and Enterprise Services images. It is focused on customer access and Layer 2 requirements and therefore many of the IP Base features are not required. The IP upgrade image is available if at a later date you require some of those features.
Starting with Cisco IOS Release (3.3.0SG or 15.1(1)SG, support for IP SLAs and NSF have been extended from Enterprise Services to IP Base.
- Feature Support by Image Type
- Features Not Supported on the Cisco Catalyst 4500X Series Switches
- Orderable Product Numbers
- Support
Feature Support by Image Type
Table 1 is a detailed list of features supported on Catalyst 4500X Series switches running Cisco IOS Software Release 3.3.1SG categorized by image type. Please visit Feature Navigator for package details:
http://tools.cisco.com/ITDIT/CFN/
Table 1 IP Base/EnterpriseServices Image Support on Cisco Catalyst 4500X Series Supervisor Engine 7-E
BGP Increased Support of Numbered as-path Access Lists to 500
CFM/IEEE 802.1ag - D8.1 standard Compliant CFM, Y.1731 multicast LBM / AIS / RDI / LCK, IP SLA for Ethernet
Class Based Ethernet CoS Matching & Marking (802.1p & ISL CoS)
FHRP - Enhanced Object Tracking of IP SLAs1
IEEE 802.1s Multiple Spanning Tree (MST) Standard Compliance
IEEE 802.1t2
IEEE 802.3ad Link Aggregation (LACP) Port-Channel Standalone Disable
IGMP Version 3 - Explicit Tracking of Hosts, Groups, and Channels
IP Multicast Load Splitting - Equal Cost Multipath (ECMP) using S, G and Next-hop
IPv6 - IP SLAs (UDP Jitter, UDP Echo, ICMP Echo, TCP Connect)
IPv6 Multicast: Multicast Listener Discovery (MLD) Protocol, Versions 1 and 2
IPv6 Multicast: RPF Flooding of Bootstrap Router (BSR) Packets
Yes3
IPv6 Services: Cisco Discovery Protocol (CDP) - IPv6 Address Family Support for Neighbor Information
IPv6 Switching: CEFv6 Switched Automatic IPv4-compatible Tunnels (in software)
IPv6 Switching: CEFv6 Switched Configured IPv6 over IPv4 Tunnels (in software)
IPv6 Tunneling: Automatic IPv4-compatible Tunnels (in software)
IPv6 Tunneling: Manually Configured IPv6 over IPv4 Tunnels (in software)
Yes 3
Yes 3
Medianet 2.0: Integrated Video Traffic Simulator (hardware-assisted IP SLA); IPSLA generator and responder
Medianet 2.0: Media Monitoring (Performance Monitoring and Mediatrace)
NEAT Enhancement: Re-Enabling BPDU Guard Based on User Configuration
Yes 3
Yes 3
Yes 3
Yes 3
Yes 3
Yes 3
Yes 3
Yes 3
Yes 3
Yes 3
Yes 3
Yes 3
Yes 3
RADIUS Attribute 44 (Accounting Session ID) in Access Requests
Source Specific Multicast (SSM) - IGMPv3,IGMP v3lite, and URD
For information on MiBs support, please refer to this URL:
http://ftp.cisco.com/pub/mibs/supportlists/cat4000/cat4000-supportlist.html
Features Not Supported on the Cisco Catalyst 4500X Series Switches
The following features are not supported on a Catalyst 4500X Series switches:
- CISCO-IETF-IP-FORWARD-MIB
- CISCO-IETF-IP-MIB
- LLDP HA
- SSO
- WCCP Version 1
- TrustSec: IEEE 802.1ae MACSec Layer 2 encryption
- TrustSec: IEEE 802.1ae MACSec encryption on user facing ports
- TrustSec: IEEE 802.1ae MACSec encryption on user facing ports SSO
- TrustSec: IEEE 802.1ae MACSec encryption between switch-to-switch links using Cisco SAP (Security Association Protocol)
Orderable Product Numbers
Support
Support for Cisco IOS Software Release 3.3.0SG follows the standard Cisco Systems® support policy, available at
http://www.cisco.com/en/US/products/products_end-of-life_policy.htmlSupported Hardware on the Catalyst 4500X Series Switches
For information on the minimum supported release for each pluggable module please refer to:
http://www.cisco.com/en/US/products/hw/modules/ps5455/products_device_support_tables_list.html
Table 3 lists the hardware supported on the Catalyst 4500X Series switches.
Table 3 Supported Hardware on the Cisco Catalyst 4500X Series Switch
1000BASE-BX10-D small form-factor pluggable module
For DOM support, see Table 6.1000BASE-BX10-U small form-factor pluggable module
For DOM support, see Table 6.bv1000BASE-LX/LH small form-factor pluggable module with DOM support
CWDM small form-factor pluggable module (See Table 4 for a list of supported wavelengths.)
For DOM support, see Table 6.Cisco 10GBASE-ZR SFP+ Module for SMF
Note This module is only supported on the uplink module in the back-to-front airflow configuration.
Table 4 briefly describes the supported CWDM wavelengths in the Catalyst 4500X Series switch.
Table 5 briefly describes the supported DWDM wavelengths on the Catalyst 4500X Series Switches.
For a complete list of Cisco Gigabit Ethernet Transceiver Modules, please refer to the URL:
http://www.cisco.com//c/en/us/td/docs/interfaces_modules/transceiver_modules/compatibility/matrix/OL_6981.html#38544
Table 6 briefly describes the DOM support on the Catalyst 4500X Series switches.
New and Changed Information
These sections describe the new and changed information for the Catalyst 4500X Series switch running Cisco IOS XE software:
- New Software Features in Release IOS XE 3.3.1SG
- New Hardware Features in Release IOS XE 3.3.1SG
- New Software Features in Release IOS XE 3.3.0SG
New Software Features in Release IOS XE 3.3.1SG
Release IOS XE 3.3.1SG provides no new new software on the Catalyst 4500X Series switch.
New Hardware Features in Release IOS XE 3.3.1SG
Release IOS XE 3.3.1SG provides the following new hardware on the Catalyst 4500X Series switch:
New Software Features in Release IOS XE 3.3.0SG
Release IOS XE 3.3.0SG provides the following new software on the Catalyst 4500X-32 Switch in addition to the features present in the previous XE release on the Catalyst 4500E:
–
Media Monitoring (includes Performance Monitoring and Mediatrace)
–
For details refer to the URLs:
http://www.cisco.com/en/US/products/ps10195/index.html
http://www.cisco.com/en/US/docs/switches/lan/energywise/phase2_5/ios/release/notes/ol23554.html
- Wireshark- based Ethernet Analyzer
- IPv6 OSPFv3 NSF/SSO
- IPv6 OSPFv3 Fast Convergence
- OSPFv3 Authentication
- IPsecv3/IKEv2 (for management traffic only)
- FIPS 140-2/3 Level 2 Certification
- No Service Password Recovery
- Easy Virtual Network (EVN)
- ND cache limit per interface
- HSRPv2 for IPv6 Global Address Support
- MAB with configurable user name/ password
- BGP Wildcard
- 802.1X with User Distribution ("Configuring 802.1X Port-Based Authentication" chapter)
- Auto SmartPort ("Configuring Auto SmartPort Macros" chapter)
- DSCP/CoS via LLDP ("Configuring LLDP, LLDP-MED, and Location Service" chapter
- EEM: Embedded Event Manager 3.2
For details, refer to the URL:
http://www.cisco.com/en/US/docs/switches/datacenter/sw/5_x/nx-os/system_management/configuration/guide/sm_12eem.htmlhttp://www.cisco.com/en/US/docs/ios/saf/configuration/guide/saf_cg.html
For details refer to the URLs:
http://www.cisco.com/en/US/docs/switches/lan/energywise/phase2/ios/configuration/guide/ew_v2.html
http://www.cisco.com/en/US/docs/switches/lan/energywise/phase2_5/ios/release/notes/ol23554.html#wp60494l
- GOLD Online Diagnostics ("Performing Diagnostics" chapter)
- ACL Policy Enhancements ("Configuring Network Security with ACLs" chapter)
- Network Edge Access Topology ("Configuring 802.1X Port-Based Authentication" chapter)
- IPSG for Static Hosts (Refer to the Cisco IOS library)
- IPv6 PACL ("Configuring Network Security with ACLs" chapter)
- IPv6 RA Guard ("Configuring Network Security with ACLs" chapter)
- IPv6 Interface Statistics ("Configuring Layer 3 Interfaces" chapter)
- IS-IS for IPv4 ad IPv6 (Refer to the Cisco IOS library)
- IEEE 802.3ad Link Aggregation (LACP) Port-Channel Standalone Disable
- Layer 2 Control Packet)
- Link State Tracking ("Configuring EtherChannel and Link State Tracking" chapter)
- MAC move and replace ("Administering the Switch" chapter)
- Per-VLAN Learning ("Administering the Switch" chapter)
- PoEP via LLDP ("Configuring LLDP, LLDP-MED, and Location Service" chapter)
- RADIUS CoA ("Configuring 802.1X Port-Based Authentication" chapter)
- Sub-second UDLD (Configuring UDLD" chapter)
- VLAN Translation ("Configuring 802.1Q Tunneling, VLAN Mapping, and Layer 2 Protocol Tunneling" chapter)
- VRF-aware TACACS+ ("Configuring VRF-lite" chapter)
- XML Programmatic Interface (Refer to the Cisco IOS library)
For details refer to the URL:
http://www.cisco.com/en/US/docs/ios/netmgmt/configuration/guide/nm_xmlpi_v1.html
- BGP 4Byte ASN (CnH)
- BGP graceful restart per neighbor
- BGP Nexthop tracking
- Dynamic PBR API
- Multicast Call Admission Control—Per interface route state limit
- Bandwidth-based Call Admission Control policy for Multicast
- Ability to disallow mcast group ranges
- IPv6 SSM mapping—MLD v1 receivers
- IPv6 BSR—Ability to configure RP mapping
- MSDP MD5 password authentication
- MLD group limits
- IPv6 multicast—Disable group ranges
- IGMP static group range support
- PIM-triggered joins
- Support directly conn. add in autoRP cand. RP
- Enhanced Multicast Multipath
- IGMP-STD-MIB implementation
- Knob to use SNMP MIBII ifindex as int-id in OSPF data fields
- Enhanced OSPF traffic stats
- OSPF Mechanism to exclude Connected prefixes
- OSPF TTL Security Check
- OSPF Graceful Shutdown
- OSPFv2 int. enabling—OSPF area command
- OSPFv3 IPSec enhancements
- IP-RIP: Delayed startup
- AAA accounting: Stop record CLI enhancement
- Radius Server Load Balancing porting
- AAA Double Authentication Secured by Absolute Timeout
- Local AAA Attribute Support via Subscriber Profile
- Method List, Server Group Scalability
- BGP: Dual AS Accept Implementation
- NSF in IP Base
- IGMPv3 Host Stac
- Per Intf IGMP State Limit
- Per Intf MrouteState Limit
- TACACS+ and Radius for IPv6
- NTP for IPv6( It is VRF aware as well)
Cisco IOS XE to Cisco IOS Version Number Mapping
As Table 7 shows, each version of Cisco IOS XE has an associated Cisco IOS version:
Limitations and Restrictions
These sections list the limitations and restrictions for the current release of Cisco IOS software on the Catalyst 4500X Series switches.
- More than 16K QoS policies can be configured in software. Only the first 16K are installed in hardware.
- Adjacency learning (through ARP response frames) is restricted to roughly 1000 new adjacencies per second, depending on CPU utilization. This should only impact large networks on the first bootup. After adjacencies are learned they are installed in hardware.
- Multicast fastdrop entries are not created when RPF failure occurs with IPv6 multicast traffic. In a topology where reverse path check failure occurs with IPv6 multicast, this may cause high CPU utilization on the switch.
- The SNMP ceImageFeature object returns a similar feature list for all the three license levels (IP Base and EntServices). Although the activated feature set for a universal image varies based on the installed feature license, the value displayed by this object is fixed and is not based on the feature license level.
- Standard TFTP implementation limits the maximum size of a file that can be transferred to 32 MB. If ROMMON is used to boot an IOS image that is larger than 32 MB, the TFTP transfer fails at the 65,xxx datagram.
TFTP numbers its datagrams with a 16 bit field, resulting in a maximum of 65,536 datagrams. Because each TFTP datagram is 512 bytes long, the maximum transferable file is 65536 x 512 = 32 MB. If both the TFTP client (ROMMON) and the TFTP server support block number wraparound, no size limitation exists.
Cisco has modified the TFTP client to support block number wraparound. So, if you encounter a transfer failure, use a TFTP server that supports TFTP block number wraparound. Because most implementations of TFTP support block number wraparound, updating the TFTP daemon should fix the issue.
The outputs of certain commands, such as show ip route and show access-lists, contain non-deterministic text. While the output is easily understood, the output text does not contain strings that are consistently output. A general purpose specification file entry is unable to parse all possible output.
While a general purpose specification file entry may not be possible, a specification file entry might be created that returns the desired text by searching for text that is guaranteed to be in the output. If a string is guaranteed to be in the output, it can be used for parsing.
For example, the output of the show ip access-lists SecWiz_Gi3_17_out_ip command is this:
The first line is easily parsed because access list is guaranteed to be in the output:
The remaining lines all contain the term host. As a result, the specification file may report the desired values by specifying that string. For example, this line
will produce the following for the first and second rules
and the following for the third statement
Request the output of the show running-config command using NETCONF and parse that output for the desired strings. This is useful when the desired lines contain nothing in common. For example, the rules in this access list do not contain a common string and the order (three permits, then a deny, then another permit), prevent the spec file entry from using permit as a search string, as in the following example:
The XML output of show running-config command includes the following, which can then be parsed programmatically, as desired:
<X-Interface> permit 0000.0000.ffef ffff.ffff.0000 0000.00af.bcef ffff.ff00.0000 appletalk</X-Interface>
- When attaching a existing policy-map (that is already applied to a control-port) to another front-panel port, the following message displays:
The policymap <policy-map name> is already attached to control-plane and cannot be shared with other targets.Workaround: Define a policy-map with a different name and then reattach. CSCti26172
- If the number of unique FNF monitors attached to target exceeds 2048 (one per target), a switch responds slowly:
–
–
- ciscoFlashPartitionFileCount object returns an incorrect file count for bootflash:, usb0:, slot0:, slaveslot0:, slavebootflash:, and slaveusb0:.
Workaround: Use the dir device command (for example, dir bootflash:) to obtain the correct file count. CSCti74130
- If multicast is configured and you make changes to the configuration, Traceback and CPUHOG messages are displayed if the following conditions exist:
–
–
This is caused by the large number of updates generating SPI messages that must be processed by the CPU to ensure that the platform is updated with the changes in all the entries.
- When attaching a existing policy-map (that is already applied to a control-port) to another front-panel port, following message displays:
The policymap <policy-map name> is already attached to control-plane and cannot be shared with other targets.Workaround: Define a policy-map with a different name and then reattach. CSCti26172
- With traffic running, entering clear ip mroute * with larger number of mroutes and over 6 OIFs will cause Malloc Fail messages to display.
You cannot clear a large number of mroutes at one time when traffic is still running.
Workaround: Do not clear all mroutes at once.
- Although you can configure subsecond PIM query intervals on Catalyst 4500 platforms, such an action represents a compromise between convergence (reaction time) and a number of other factors (number of mroutes, base line of CPU utilization, CPU speed, processing overhead per 1 m-route, etc.). You must account for those factors when configuring subsecond PIM timers. We recommend that you set the PIM query interval to a minimum of 2 seconds. By adjusting the available parameters, you can achieve flawless operation; that is, a top number of multicast routes per given convergence time on a specific setup.
- Energywise WOL is not “waking up” a PC in hibernate or standby mode.
Workaround: Use the show version command. CSCtr30294
Workaround: Select an alternate destination or source port. CSCty05405
Caveats
Caveats describe unexpected behavior in Cisco IOS releases. Caveats listed as open in a prior release are carried forward to the next release as either open or resolved.
Note
http://www.cisco.com/en/US/products/products_security_advisories_listing.html
Open Caveats for Cisco IOS XE Release 3.3.2SG
This section lists the open caveats for Cisco IOS XE Release 3.3.2SG:
- On a Catalyst 4500 series switch, running Cisco IOS-XE Release 03.03.2SG, QoS service policies are applied on VLANs where the user has not configured this.
For example, if a Catalyst 4500 series switch has two groups of VLANs defined in VLAN configuration mode:
–
–
When you enter the VLAN configuration mode for a VLAN that belongs to group A and configure the same NetFlow policy present in group B, ALL group B VLANs inherit the QoS configuration, even if you do not apply it.
The problem is seen only on a Catalyst 4500 series switch, running Cisco IOS-XE Release 03.03.2SG
- When an SNMP query includes the cpmCPUProcessHistoryTable, the query time is very slow, and CPU utilization of the os_info_p process (OS Info provider) increases substantially. The time required for a full walk of an almost fully populated table is 68 minutes.
- The show ipv6 access-list command displays incorrect match counts when multicast traffic is matched to an IPv6 access list that is attached to an SVI.
- When either the RADIUS-server test feature is enabled or RADIUS-server dead-criteria is configured, and either RADIUS-server deadtime is set to 0 or not configured, the RADIUS-server status is not properly relayed to AAA.
Workaround: Configure both dead-criteria and deadtime.
- When you configure open authentication and perform SSO, the spanning tree state and MAC address are not synchronized to the new standby supervisor engine. This behavior interrupts traffic only after the second switchover because the new standby supervisor engine possesses the wrong state after the initial switchover and the second switchover starts the port in the blocking state.
Workaround: Enter shut and no shut on the port to synchronize the STP state. CSCtf52437
- If you reboot a switch, the configured value of the interface MTU size for the elements of the port channel interface does not work for IPv6 traffic.
Workaround: After the switch reloads, enter shut and no shut on the port-channel interface.
Workaround: Increase the queue limit to at least 256. CSCto57602
–
–
Workaround: Do not use the quick option with the issu changeversion command. CSCto51562
- A device in a guest VLAN that is connected behind a phone that is capable of 2nd-port-notification experiences packet loss following a SSO failover. The device experiences an authentication restart after the first CDP frame arrives from the phone.
- Dynamic ACLs do not function correctly if they have advanced operators, including dscp/ipp/tos, log/log-input, fragments, and TCP flag operators.
Workaround: Remove these operators from any dynamic ACLs. CSCts05302
- If you perform an OIR on a line card, several %C4K_RKNOVA-4-INVALIDTOKENEXPIRED messages appear in the logs.
- On a redundant system consisting of Supervisor Engine 6-E and Supervisor Engine 7-E, when the system uses considerable memory (for example, with heavy multicast traffic), a crash may occur. This event is due to a memory mismatch between the two supervisor engines.
Workaround: Upgrade the memory of the Supervisor Engine 6-E to match that of the Supervisor Engine 7-E.
- A peer policy is not updated after reauthentication if the policy is changed on the AS beforehand. After reauthentication, the original peer policy is retained.
Workaround: Enter shut and no shut on the port. CSCts29515
- When you enable both Cisco TrustSec and RADIUS accounting, a disparity occurs between the RADIUS client (Cisco switch) and the RADIUS/CTS server in how the authenticator field in the header is computed for DOT1X/RADIUS accounting messages.
A Cisco IOS AAA client uses the PAC secret to compute the authenticator; Cisco Secure ACS 5.2 uses the shared secret. This behavior causes a mismatch that results in a rejection of the accounting message, and the client marks the server as unresponsive.
Workaround: None. You must disable 802.1X accounting. CSCts26844
- When more than one Equal Cost Multipath (ECMP) is available on the downstream switch, and Mediatrace is invoked to provide flow statistics, the dynamic policy does not show statistics for a flow.
Mediatrace cannot find the correct inbound interface and applies the dynamic policy on a different interface from the one used for media flow.
- When a switchover is created on the Mediatrace responder, the dynamic access list created for a monitored flow tuple is not deleted. Although the Mediatrace initiator creates another set of dynamic access lists after the switchover, the old ones remain in the configuration.
The impact of stale dynamic access lists is to monitor unwanted traffic.
–
–
- Configuring an interface as unidirectional with the unidirectional send-only | receive-only command still allows the interface to send (configured as Send-only Unidirection Ethernet mode) or receive (configured as Receive-only Unidirection Ethernet mode) packets in a bidirectional mode.
- When you add a "bfd" suffix to the snmp server host x.x.x.x configuration command, the BFD traps, ciscoBfdSessUp and ciscoBfdSessDown, are not generated.
Workaround: Do not specify a "bfd" suffix with the snmp-server host x.x.x.x configuration command. CSCtx51561
- During either a system- or user-initiated reload operation, the following message is observed when the system shuts down:
This message is not observed during a system bootup.
Workaround: None required. This message is information only. CSCtz15738
- A switch running a Supervisor Engine 7-E or Supervisor Engine 7L-E fails if you enter show memory debug leak on the console while show memory detailed process iosd debug leaks is being executed from another Telnet session.
Workaround: Avoid running both commands simultaneously. CSCty27680
- If a configuration contains an "ip vrf" or "vrf definition" section, and you type “wr mem” while using an IP Base or LAN Base boot level of IOS-XE, the following message appears.
Workaround: None. The message is information only. CSCtw93140
- With IGMP snooping enabled, multicast traffic received through a tunnel interface is not forwarded out the Outgoing Interface List.
Workaround: Disable IGMP snooping. CSCuc65538
- When a port connected to a CDP speaker goes down, a small memory leak occurs (typically less than 300 bytes).
Workaround: Disable CDP on interfaces that may flap frequently. CSCub85948
Resolved Caveats for Cisco IOS XE Release 3.3.2SG
This section lists the new resolved caveats for Cisco IOS XE Release 3.3.2SG:
- After booting a switch with Cisco IOS XE 3.3.0SG or 3.3.1SG with a crypto (k9) image, a linecard may display a status of Auth Fail, and will not be brought online. Non-crypto images are unaffected.
Workaround: Reset the linecard either with the hw-module module m reset command or through a manual OIR. CSCuc64146
Open Caveats for Cisco IOS XE Release 3.3.1SG
This section lists the open caveats for Cisco IOS XE Release 3.3.1SG:
- When an SNMP query includes the cpmCPUProcessHistoryTable, the query time is very slow, and CPU utilization of the os_info_p process (OS Info provider) increases substantially. The time required for a full walk of an almost fully populated table is 68 minutes.
- The show ipv6 access-list command displays incorrect match counts when multicast traffic is matched to an IPv6 access list that is attached to an SVI.
- When either the RADIUS-server test feature is enabled or RADIUS-server dead-criteria is configured, and either RADIUS-server deadtime is set to 0 or not configured, the RADIUS-server status is not properly relayed to AAA.
Workaround: Configure both dead-criteria and deadtime.
- When you configure open authentication and perform SSO, the spanning tree state and MAC address are not synchronized to the new standby supervisor engine. This behavior interrupts traffic only after the second switchover because the new standby supervisor engine possesses the wrong state after the initial switchover and the second switchover starts the port in the blocking state.
Workaround: Enter shut and no shut on the port to synchronize the STP state. CSCtf52437
- If you reboot a switch, the configured value of the interface MTU size for the elements of the port channel interface does not work for IPv6 traffic.
Workaround: After the switch reloads, enter shut and no shut on the port-channel interface.
Workaround: Increase the queue limit to at least 256. CSCto57602
–
–
Workaround: Do not use the quick option with the issu changeversion command. CSCto51562
- A device in a guest VLAN that is connected behind a phone that is capable of 2nd-port-notification experiences packet loss following a SSO failover. The device experiences an authentication restart after the first CDP frame arrives from the phone.
- Dynamic ACLs do not function correctly if they have advanced operators, including dscp/ipp/tos, log/log-input, fragments, and TCP flag operators.
Workaround: Remove these operators from any dynamic ACLs. CSCts05302
- If you perform an OIR on a line card, several %C4K_RKNOVA-4-INVALIDTOKENEXPIRED messages appear in the logs.
- A peer policy is not updated after reauthentication if the policy is changed on the AS beforehand. After reauthentication, the original peer policy is retained.
Workaround: Enter shut and no shut on the port. CSCts29515
- When you enable both Cisco TrustSec and RADIUS accounting, a disparity occurs between the RADIUS client (Cisco switch) and the RADIUS/CTS server in how the authenticator field in the header is computed for DOT1X/RADIUS accounting messages.
A Cisco IOS AAA client uses the PAC secret to compute the authenticator; Cisco Secure ACS 5.2 uses the shared secret. This behavior causes a mismatch that results in a rejection of the accounting message, and the client marks the server as unresponsive.
Workaround: None. You must disable 802.1X accounting. CSCts26844
- When more than one Equal Cost Multipath (ECMP) is available on the downstream switch, and Mediatrace is invoked to provide flow statistics, the dynamic policy does not show statistics for a flow.
Mediatrace cannot find the correct inbound interface and applies the dynamic policy on a different interface from the one used for media flow.
- When a switchover is created on the Mediatrace responder, the dynamic access list created for a monitored flow tuple is not deleted. Although the Mediatrace initiator creates another set of dynamic access lists after the switchover, the old ones remain in the configuration.
The impact of stale dynamic access lists is to monitor unwanted traffic.
–
–
- Configuring an interface as unidirectional with the unidirectional send-only | receive-only command still allows the interface to send (configured as Send-only Unidirection Ethernet mode) or receive (configured as Receive-only Unidirection Ethernet mode) packets in a bidirectional mode.
- When you add a "bfd" suffix to the snmp server host x.x.x.x configuration command, the BFD traps, ciscoBfdSessUp and ciscoBfdSessDown, are not generated.
Workaround: Do not specify a "bfd" suffix with the snmp-server host x.x.x.x configuration command. CSCtx51561
- When MLD Snooping is disabled, a Catalyst 4500X Series switches cannot maintain six MLD joins. This causes traffic loss due to missing outgoing interfaces.
Workaround: Enable MLD snooping. CSCtx82176
- If a switch enabled with Bidir PIM has a software tunnel interface pointing towards the RP upstream, packet drops are observed.
Workaround: None. Consider using a physical interface pointing towards RP upstream.
- During either a system- or user-initiated reload operation, the following message is observed when the system shuts down:
This message is not observed during a system bootup.
Workaround: None required. This message is information only. CSCtz15738
- A WS-C4500X Series switch will fail when you use the switchport command to convert ports from Layer 3 to Layer 2, if the former is configured with IPv4 and IPv6 ACLs (each with 500 ACEs).
Workaround: Enter the default interface te command in global configuration mode before you enter the switchport command. CSCty52629
- When a 4500X module is removed incorrectly, hardware forwarding tables are frozen, and baseboard ports remain connected for 20-25 seconds.
Workaround:the 4500X uplink module by first pressing the ejector button for 10 seconds until the light turns green. CSCty67871
Caution: the module without following this procedure is unsupported and will always produce a crash. To avoid the potential for black-holing traffic, use the ejector button.
- For the Ten-Gigabit interface on a C4500X switch, link flaps are observed if the debounce interval is defined with the link debounce time command to within 1 sec of the pulse interval.
For example, if the pulse interval is 250ms and the debounce interval is 500ms, then the delta is 250ms and the debouce will be ineffective.
Workaround: Define a debounce interval that is at least 1 second greater than the incoming pulse interval. CSCtx75188
- A C4500X switch fails if you enter show memory debug leak on the console while show memory detailed process iosd debug leaks is being executed from another Telnet session.
Workaround: Avoid running both commands simultaneously. CSCty27680
- If a configuration contains an "ip vrf" or "vrf definition" section, and you type “wr mem” while using an IP Base or LAN Base boot level of IOS-XE, the following message appears.
Workaround: None. The message is information only. CSCtw93140
- After logging “Authorization succeeded for client (Unknown MAC)”, a switch crashes if the following conditions apply:
–
authentication event server dead action authorize...
authentication event server alive action reinitalize
–
–
- Traffic is dropped on a particular tx-queue of an EtherChannel member interfacere configured with a queuing policy. However, it will still appear in an egress span session of the EtherChannel.
The show platform software interface tx-queue command will display an incorrect number of configured queues (compare to EtherChannel members that are not dropping traffic).
Workaround: Enter shut then no shut on the port. CSCua66962
- On a switch running Cisco XE 3.2.4SG or 3.3.0SG with 4648* or 4748* linecards with PoE, a single port on a linecard fails to link up, usually after flapping its link frequently.
Workaround: Enter shut then no shut on the port. CSCtz94862
- On a switch running Cisco XE 3.2.4SG or 3.3.0SG on 4648* or 4748* linecards with PoE, the PoE device will not power up on a single port, but will work on other ports on the same linecard.
–
–
- While running flexible netflow, the extended VLAN range of 1024-4000 is not observed in the software cache flow.
- When a QoS policy is attached to a physical interface on a module or to a channel port containing interfaces on the module, a crash may occur when you remove a line card.
Workaround: Remove the QoS policy before removing the linecard. CSCtz39815
Resolved Caveats for Cisco IOS XE Release 3.3.1SG
This section lists the resolved caveats for Cisco IOS XE Release 3.3.1SG:
Open Caveats for Cisco IOS XE Release 3.3.0SG
This section lists the open caveats for Cisco IOS XE Release 3.3.0SG:
- When an SNMP query includes the cpmCPUProcessHistoryTable, the query time is very slow, and CPU utilization of the os_info_p process (OS Info provider) increases substantially. The time required for a full walk of an almost fully populated table is 68 minutes.
- The show ipv6 access-list command displays incorrect match counts when multicast traffic is matched to an IPv6 access list that is attached to an SVI.
- When either the RADIUS-server test feature is enabled or RADIUS-server dead-criteria is configured, and either RADIUS-server deadtime is set to 0 or not configured, the RADIUS-server status is not properly relayed to AAA.
Workaround: Configure both dead-criteria and deadtime.
- When you configure open authentication and perform SSO, the spanning tree state and MAC address are not synchronized to the new standby supervisor engine. This behavior interrupts traffic only after the second switchover because the new standby supervisor engine possesses the wrong state after the initial switchover and the second switchover starts the port in the blocking state.
Workaround: Enter shut and no shut on the port to synchronize the STP state. CSCtf52437
- If you reboot a switch, the configured value of the interface MTU size for the elements of the port channel interface does not work for IPv6 traffic.
Workaround: After the switch reloads, enter shut and no shut on the port-channel interface.
Workaround: Increase the queue limit to at least 256. CSCto57602
–
–
Workaround: Do not use the quick option with the issu changeversion command. CSCto51562
- A device in a guest VLAN that is connected behind a phone that is capable of 2nd-port-notification experiences packet loss following a SSO failover. The device experiences an authentication restart after the first CDP frame arrives from the phone.
- Dynamic ACLs do not function correctly if they have advanced operators, including dscp/ipp/tos, log/log-input, fragments, and TCP flag operators.
Workaround: Remove these operators from any dynamic ACLs. CSCts05302
- If you perform an OIR on a line card, several %C4K_RKNOVA-4-INVALIDTOKENEXPIRED messages appear in the logs.
- A peer policy is not updated after reauthentication if the policy is changed on the AS beforehand. After reauthentication, the original peer policy is retained.
Workaround: Enter shut and no shut on the port. CSCts29515
- When you enable both Cisco TrustSec and RADIUS accounting, a disparity occurs between the RADIUS client (Cisco switch) and the RADIUS/CTS server in how the authenticator field in the header is computed for DOT1X/RADIUS accounting messages.
A Cisco IOS AAA client uses the PAC secret to compute the authenticator; Cisco Secure ACS 5.2 uses the shared secret. This behavior causes a mismatch that results in a rejection of the accounting message, and the client marks the server as unresponsive.
Workaround: None. You must disable 802.1X accounting. CSCts26844
- When more than one Equal Cost Multipath (ECMP) is available on the downstream switch, and Mediatrace is invoked to provide flow statistics, the dynamic policy does not show statistics for a flow.
Mediatrace cannot find the correct inbound interface and applies the dynamic policy on a different interface from the one used for media flow.
- When a switchover is created on the Mediatrace responder, the dynamic access list created for a monitored flow tuple is not deleted. Although the Mediatrace initiator creates another set of dynamic access lists after the switchover, the old ones remain in the configuration.
The impact of stale dynamic access lists is to monitor unwanted traffic.
–
–
- Configuring an interface as unidirectional with the unidirectional send-only | receive-only command still allows the interface to send (configured as Send-only Unidirection Ethernet mode) or receive (configured as Receive-only Unidirection Ethernet mode) packets in a bidirectional mode.
- When you add a "bfd" suffix to the snmp server host x.x.x.x configuration command, the BFD traps, ciscoBfdSessUp and ciscoBfdSessDown, are not generated.
Workaround: Do not specify a "bfd" suffix with the snmp-server host x.x.x.x configuration command. CSCtx51561
- When MLD Snooping is disabled, a C4500X switch cannot maintain six MLD joins. This causes traffic loss due to missing outgoing interfaces.
Workaround: Enable MLD snooping. CSCtx82176
- If a switch enabled with Bidir PIM has a software tunnel interface pointing towards the RP upstream, packet drops are observed.
Workaround: None. Consider using a physical interface pointing towards RP upstream.
- During either a system- or user-initiated reload operation, the following message is observed when the system shuts down:
This message is not observed during a system bootup.
Workaround: None required. This message is information only. CSCtz15738
- A C4500X switch will fail when you use the switchport command to convert ports from Layer 3 to Layer 2, if the former is configured with IPv4 and IPv6 ACLs (each with 500 ACEs).
Workaround: Enter the default interface te command in global configuration mode before you enter the switchport command. CSCty52629
- When a 4500X module is removed incorrectly, hardware forwarding tables are frozen, and baseboard ports remain connected for 20-25 seconds.
Workaround:the 4500X uplink module by first pressing the ejector button for 10 seconds until the light turns green. CSCty67871
Caution: the module without following this procedure is unsupported and will always produce a crash. To avoid the potential for black-holing traffic, use the ejector button.
- For the Ten-Gigabit interface on a C4500X switch, link flaps are observed if the debounce interval is defined with the link debounce time command to within 1 sec of the pulse interval.
For example, if the pulse interval is 250ms and the debounce interval is 500ms, then the delta is 250ms and the debouce will be ineffective.
Workaround: Define a debounce interval that is at least 1 second greater than the incoming pulse interval. CSCtx75188
- A C4500X switch fails if you enter show memory debug leak on the console while show memory detailed process iosd debug leaks is being executed from another Telnet session.
Workaround: Avoid running both commands simultaneously. CSCty27680
Resolved Caveats for Cisco IOS XE Release 3.3.0SG
This section lists the resolved caveats for Cisco IOS XE Release 3.3.0SG:
- If you enter the show spanning-tree vlan command when spanning tree is changed from PVST to Rapid PVST, the ports configured as promiscuous trunks are not listed as part of the spanning tree.
Workaround: Enter shut and no shut on the ports. CSCtn88228
- If you enter the show mem detailed process ? command on a Supervisor Engine 7-E switch, a list of processes is not displayed.
Troubleshooting
These sections provide troubleshooting guidelines for the Catalyst 4500 series switches:
- Netbooting from ROMMON
- Troubleshooting at the System Level
- Troubleshooting Modules
- Troubleshooting MIBs
Netbooting from ROMMON
Netbooting using a boot loader image is not supported. Instead, use one of the following options to boot an image:
1.
The ROMMON TFTP boot is very similar to the BOOTLDR TFTP boot, except that:
–
–
To boot from ROMMON, perform the following tasks while in ROMMON mode:
a.
b.
c.
For example, to set the supervisor engine Ethernet port with an IP address 172.16.1.5 and IP mask 255.255.255.0, enter the following command:
d.
e.
f.
For example, to boot the Cisco IOS XE image cat4500e-universalk9.03.03.00.SG.151-1.SG.bin located on the TFTP server 172.16.1.8, enter the following command:
Troubleshooting at the System Level
This section contains troubleshooting guidelines for system-level problems:
- When the system is booting and running power-on diagnostics, do not reset the switch.
- Ensure that you do not mix the serial and Ethernet cables plugged into the supervisor engine. The Fast Ethernet port (10/100 MGT) on the supervisor engine is inoperative. An Ethernet cable plugged into the Fast Ethernet port is active only in ROMMON mode.
Troubleshooting Modules
Whenever you connect an interface that has duplex set to autonegotiate to an end station or another networking device, ensure that the other device is configured for autonegotiation as well. If the other device is not set to autonegotiate, the port set to autonegotiate will remain in half-duplex mode, which can cause a duplex mismatch resulting in packet loss, late collisions, and line errors on the link.
Troubleshooting MIBs
For general information on MIBs, RMON groups, and traps, refer to the Cisco public MIB directory ( http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml). For information on the specific MIBs supported by the Catalyst 4500 series switches, refer to the Catalyst 4000 MIB Support List located at ftp://ftp.cisco.com/pub/mibs/supportlists/cat4000/cat4000-supportlist.html.
Notices
The following notices pertain to this software license.
OpenSSL/Open SSL Project
This product includes software developed by the OpenSSL Project for use in the OpenSSL Toolkit ( http://www.openssl.org/).
This product includes cryptographic software written by Eric Young (eay@cryptsoft.com).
This product includes software written by Tim Hudson (tjh@cryptsoft.com).
License Issues
The OpenSSL toolkit stays under a dual license, i.e. both the conditions of the OpenSSL License and the original SSLeay license apply to the toolkit. See below for the actual license texts. Actually both licenses are BSD-style Open Source licenses. In case of any license issues related to OpenSSL please contact openssl-core@openssl.org.
Copyright © 1998-2007 The OpenSSL Project. All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
1.
2.
3.
4.
5.
6.
“This product includes software developed by the OpenSSL Project for use in the OpenSSL Toolkit ( http://www.openssl.org/)”.
THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT “AS IS”' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
This product includes cryptographic software written by Eric Young (eay@cryptsoft.com). This product includes software written by Tim Hudson (tjh@cryptsoft.com).
Copyright © 1995-1998 Eric Young (eay@cryptsoft.com). All rights reserved.
This package is an SSL implementation written by Eric Young (eay@cryptsoft.com).
The implementation was written so as to conform with Netscapes SSL.
This library is free for commercial and non-commercial use as long as the following conditions are adhered to. The following conditions apply to all code found in this distribution, be it the RC4, RSA, lhash, DES, etc., code; not just the SSL code. The SSL documentation included with this distribution is covered by the same copyright terms except that the holder is Tim Hudson (tjh@cryptsoft.com).
Copyright remains Eric Young’s, and as such any Copyright notices in the code are not to be removed. If this package is used in a product, Eric Young should be given attribution as the author of the parts of the library used. This can be in the form of a textual message at program startup or in documentation (online or textual) provided with the package.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
1.
2.
3.
“This product includes cryptographic software written by Eric Young (eay@cryptsoft.com)”.
The word ‘cryptographic’ can be left out if the routines from the library being used are not cryptography-related.
4.
THIS SOFTWARE IS PROVIDED BY ERIC YOUNG “AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
The license and distribution terms for any publicly available version or derivative of this code cannot be changed. i.e. this code cannot simply be copied and put under another distribution license [including the GNU Public License].
Obtaining Documentation and Submitting a Service Request
For information on obtaining documentation, submitting a service request, and gathering additional information, 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
Subscribe to the What’s New in Cisco Product Documentation as a Really Simple Syndication (RSS) feed and set content to be delivered directly to your desktop using a reader application. The RSS feeds are a free service and Cisco currently supports RSS Version 2.0.
This document is to be used in conjunction with the documents listed in the “Notices” section.CCVP, the Cisco logo, and Welcome to the Human Network are trademarks of Cisco Systems, Inc.; Changing the Way We Work, Live, Play, and Learn is a service mark of Cisco Systems, Inc.; and Access Registrar, Aironet, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, CCSP, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Cisco Unity, Enterprise/Solver, EtherChannel, EtherFast, EtherSwitch, Fast Step, Follow Me Browsing, FormShare, GigaDrive, HomeLink, Internet Quotient, IOS, iPhone, IP/TV, iQ Expertise, the iQ logo, iQ Net Readiness Scorecard, iQuick Study, LightStream, Linksys, MeetingPlace, MGX, Networkers, Networking Academy, Network Registrar, PIX, ProConnect, ScriptShare, SMARTnet, StackWise, The Fastest Way to Increase Your Internet Quotient, and TransPath are registered trademarks of Cisco Systems, Inc. and/or its affiliates in the United States and certain other countries.
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