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New and Changed Software Features
 Note |
Cisco IOS XE Cupertino 17.7.1a is the first release for Cisco Catalyst 8500 Series Edge Platforms in the Cisco IOS XE Cupertino 17.7.x release series. |
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Feature |
Description |
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|---|---|---|---|
| EVPN VPWS over Preferred Path Fallback Disable | This enhancement allows you to configure an EVPN-VPWS over a preferred path using SR-TE policy. The command preferred-path segment-routing traffic-eng policy includes the fallback disable option, which allows you to configure fallback behaviour. | ||
| Flexible NetFlow Support on BD-VIF | This feature introduces Flexible NetFlow (FNF) support on Bridge Domain Virtual IP Interfaces (BD-VIF). Flexible Netflow provides improved optimization and performance, enhanced security, and increased flexibility and scalability to the network. You can configure FNF on a BD-VIF using the ip flow monitor command. | ||
| Install Mode for Cisco Catalyst 8000 Series Edge platforms | All the Cisco Catalyst 8000 Series Edge Platforms are now configured to boot by default in install mode instead of bundle mode. This allows you to boot the device, and upgrade or downgrade the device using a set of install commands. Install mode uses .pkg files instead of .bin file to install the package, and provides a faster installation, with increased flexibility and control. | ||
| Multicast group calculation | The show ip multicast overlay-mapping command displays an underlay group address from the overlay group address which is used to troubleshoot or configure the network. The output includes the underlay group address that is within the configured SSM (Source Specific Multicast) address range. | ||
| Tunnel protection for IPIP with NAT-T | When you configure the tunnel protection on an IPIP tunnel, the NAT-T configuration on the IPsec tunnel works as expected. However, the incoming packets are not processed though the Internet Security Association and Key Management Protocol and IPsec Security Association are correctly generated. To ensure that the tunnel protection on the IPIP tunnel works seamlessly, configure the tunnel mode GRE IP on both endpoints. | ||
|
Programmability Features |
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| Converting IOS Commands to XML | This feature helps to automatically translate IOS commands into relevant NETCONF-XML or RESTCONF/JSON request messages. | ||
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Smart Licensing Using Policy Features |
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Ability to save authorization code request and return in a file and simpler upload in the CSSM Web UI |
If your product instance is in an air-gapped network, you can now save a SLAC request in a file on the product instance. The SLAC request file must be uploaded to the CSSM Web UI. You can then download the file containing the SLAC code and install it on the product instance. You can also upload a return request file in a similar manner. With this new method you do not have to gather and enter the required details on the CSSM Web UI to generate a SLAC. You also do not have to locate the product instance in the CSSM Web UI to return an authorization code. In the CSSM Web UI, you must upload the SLAC request or return file in the same way as you upload a RUM report. In the required Smart Account, navigate to Reports → Usage Data Files. See: No Connectivity to CSSM and No CSLU, Workflow for Topology: No Connectivity to CSSM and No CSLU, Saving a SLAC Request on the Product Instance, Removing and Returning an Authorization Code, Uploading Data or Requests to CSSM and Downloading a File |
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|
Account information included in the ACK and show command outputs |
A RUM acknowledgement (ACK) includes the Smart Account and Virtual Account that was reported to, in CSSM. You can then display account information using various show commands. The account information that is displayed is always as per the latest available ACK on the product instance. See: show license summary, show license status, show license tech. |
||
|
CSLU support for Linux |
CSLU can now be deployed on a machine (laptop or desktop) running Linux. See: CSLU, Workflow for Topology: Connected to CSSM Through CSLU, Workflow for Topology: CSLU Disconnected from CSSM |
||
|
Factory-installed trust code |
For new hardware and software orders, a trust code is now installed at the time of manufacturing.
See: Overview, Trust Code |
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|
RUM Report optimization and availability of statistics |
RUM report generation and related processes have been optimized. This includes a reduction in the time it takes to process RUM reports, better memory and disk space utilization, and visibility into the RUM reports on the product instance (how many there are, the processing state each one is in, if there are errors in any of them, and so on). See: RUM Report and Report Acknowledgement, Upgrades, Downgrades, show license rum, show license all, show license tech. |
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|
Support for trust code in additional topologies |
A trust code is automatically obtained in topologies where the product instance initiates the sending of data to Cisco Smart License Utility (CSLU) and in topologies where the product instance is in an air-gapped network. See: Connected to CSSM Through CSLU, Tasks for Product Instance-Initiated Communication CSLU Disconnected from CSSM, Tasks for Product Instance-Initiated Communication No Connectivity to CSSM and No CSLU, Workflow for Topology: No Connectivity to CSSM and No CSLU |
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|
Support to collect software version in a RUM report |
If version privacy is disabled (no license smart privacy version global configuration ) command, the Cisco IOS-XE software version running on the product instance and the Smart Agent version information is included in the RUM report. |
||
|
Tier- Based Licenses |
You can now configure tier-based throughput values if the license PID is tier-based. For example, for PID DNA-C-T0-E-3Y, you can configure Tier 0 (T0) as the throughput value on the platform. Each tier represents a throughput level. Starting with the lowest throughput level, the available tiers on the Cisco Catalyst 8500 Edge Series Platforms are Tier 2 (T2), and Tier 3 (T3) on C8500L-8S4X T3 on C8500-12X and C8500-12X4QC If you purchase a tier-based license PID, the license is displayed with the tier value in the CSSM Web UI. You can also convert the numeric throughput configuration of any existing tier-based license PIDs to a tier-based throughput value.
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Feature Navigator
You can use Cisco Feature Navigator (CFN) to find information about the features, platform, and software image support on Cisco Catalyst 8500 Series Edge Platforms. To access Cisco Feature Navigator, go to http://www.cisco.com/go/cfn. An account on cisco.com is not required.
Cisco Bug Search Tool
Cisco Bug Search Tool (BST) is a gateway to the Cisco bug-tracking system, which maintains a comprehensive list of defects and vulnerabilities in Cisco products and software. The BST provides you with detailed defect information about your products and software.
Resolved and Open Bugs for Cisco IOS XE 17.7.2
The open and resolved bugs for this release are accessible through the Cisco Bug Search Tool. This web-based tool provides you with access to the Cisco bug tracking system, which maintains information about bugs and vulnerabilities in this product and other Cisco hardware and software products. Within the Cisco Bug Search Tool , each bug is given a unique identifier (ID) with a pattern of CSCxxNNNNN, where x is any letter (a-z) and N is any number (0-9). The bug IDs are frequently referenced in Cisco documentation, such as Security Advisories, Field Notices and other Cisco support documents. Technical Assistance Center (TAC) engineers or other Cisco staff can also provide you with the ID for a specific bug. The Cisco Bug Search Tool enables you to filter the bugs so that you only see those in which you are interested.
In addition to being able to search for a specific bug ID, or for all bugs in a product and release, you can filter the open and/or resolved bugs by one or more of the following criteria:
-
Last modified date
-
Status, such as fixed (resolved) or open
-
Severity
-
Support cases
You can save searches that you perform frequently. You can also bookmark the URL for a search and email the URL for those search results.
Note |
If the defect that you have requested cannot be displayed, this may be due to one or more of the following reasons: the defect number does not exist, the defect does not have a customer-visible description yet, or the defect has been marked Cisco Confidential. |
We recommend that you view the field notices for the current release to determine whether your software or hardware platforms are affected. You can access the field notices from the following location:
Resolved Bugs for Cisco IOS XE 17.7.2
| Bug ID | Headline |
|---|---|
| CSCwa17720 | Device rebooted due to watchdogs after issuing the commands sh crypto mib ipsec commands |
| CSCwa11150 | E1 configurations (under Serial interface) lost after reload. |
| CSCwb03662 | Device CDP/LLDP not working when 10GE interface enabled with MACsec |
| CSCvz59621 | Device MKA Session not coming up on EVC |
| CSCwa76962 | Overruns and performance issues observed with crypto configuration enabled on device |
| CSCwa76260 | IKEv2 Deprecated Ciphers denied by Crypto Engine CDSL - PSB Security Compliance - DES, 3DES, DH1/2/5 |
| CSCwa49902 | MGCP automatic configuration fails after IOS-XE upgrade on device |
| CSCwb23043 | MACsec not working on subinterfaces using dot1q >255 between devices |
| CSCwa15085 | Devices Crash due to Stuck Thread with appnav-xe dual controller mode. |
| CSCwa98144 | Devices - no negotiation auto command changing to negotiation auto after reload |
| CSCwa80474 | IKEv2 Deprecated Ciphers denied by Crypto Engine CDSL - PSB Security Compliance - MD5, SHA1 |
| CSCvx28426 | Device may crash due to Crypto IKMP process |
| CSCwa01293 | ZBFW: Optimized policy traffic failure due to OG edit error |
| CSCwa18177 | Flapping bidirectional/unidirectional packet capture option with ipv4 filter for long time failed |
Open Bugs for Cisco IOS XE 17.7.2
| Bug ID | Headline |
|---|---|
| CSCvz65764 | Peer MSS value showing incorrect |
| CSCwb78228 | Device rebooted unexpectedly with reason "LocalSoft" |
| CSCwb25137 | [XE NAT] Source address translation for multicast traffic fails with route-map |
| CSCwb78423 | Excessive packet loss observed during DMVPN tunnel flapping |
| CSCwb66749 | ack/seq number abnormal when configration ip nat inside/outside on VASI intereface |
| CSCwb55683 | Large number of IPSec tunnel flapping occurs when underlay is restored |
| CSCwb74821 | yang-management process confd is not running |
| CSCwa13553 | Device QFP core due to NAT scaling issue |
| CSCwb11389 | NAT translation stops suddenly(ip nat inside doesn't work) |
| CSCwb51238 | Router reload unexpectedly two times when enter netflow show command |
| CSCwb61073 | BQS Failure - Qos policy is missing in hardware for some Virtual-Access tunnels after session flaps |
| CSCwa66916 | Device SCCP auto-configuration issues with multiple protocols |
| CSCvz94966 | Device throughput drop of 10% from 17.3 to 17.6 Release |
| CSCvz89354 | Device running 17.x.x Crashes Due to CPUHOG When Walking ciscoFlashMIB |
| CSCwb79141 | Device UCODE Crash with mpass function |
| CSCwb08186 | E1 R2 - dnis-digits cli not working |
| CSCvz91309 | Crash due to IOSXE-WATCHDOG due to management port traffic storm |
| CSCwb12647 | Device crash for stuck threads in cpp on packet processing |
| CSCwa48512 | CoR intercepted DNS reply packets dropped with drop code 52 (FirewallL4Insp) if UTD enabled also |
| CSCwb41907 | CPP uCode crash due to ipc congestion from dp to cp |
| CSCwb74917 | Device incorrectly drops ip fragments due to reassembly timeout |
| CSCwa67398 | NAT translations do not work for FTP traffic in 4451-x |
| CSCwb76509 | Assert failure while showing FTM (Forwarding Traffic Manager) data in NH TYPE switch case |
| CSCwa84919 | "Revocation-check crl none" does not failover to NONE DNAC-CA |
| CSCwb78173 | CSDL failure: IPSec QM Use of DES by encrypt proc is denied |
| CSCwb46649 | NAT translation dont show (or use) correct timeout value for an established TCP session |
| CSCwb68897 | "Total output drops" counter in "show interface" on Port-channel doesn't work properly |
| CSCwb02142 | Traceback: fman_fp_image core after clearing packet-trace conditions |
| CSCwb29362 | Evaluation of IOS-XE for OpenSSL CVE-2022-0778 and CVE-2021-4160 |
| CSCvz34668 | Static mapping for the hub lost on one of the spokes |
| CSCwa74499 | ZBFW seeing the SIP ALG incorrectly dropping traffic and resetting connection |
| CSCwb76866 | CSDL failure: Use of MD5 by IPSEC key engine is denied |
| CSCwa68540 | FTP data traffic broken when UTD IPS enabled in both service VPN |
| CSCwb79138 | Device after the upgrade starts dropping GRE tunnel packets |
Resolved and Open Bugs for Cisco IOS XE 17.7.1a
The open and resolved bugs for this release are accessible through the Cisco Bug Search Tool. This web-based tool provides you with access to the Cisco bug tracking system, which maintains information about bugs and vulnerabilities in this product and other Cisco hardware and software products. Within the Cisco Bug Search Tool , each bug is given a unique identifier (ID) with a pattern of CSCxxNNNNN, where x is any letter (a-z) and N is any number (0-9). The bug IDs are frequently referenced in Cisco documentation, such as Security Advisories, Field Notices and other Cisco support documents. Technical Assistance Center (TAC) engineers or other Cisco staff can also provide you with the ID for a specific bug. The Cisco Bug Search Tool enables you to filter the bugs so that you only see those in which you are interested.
In addition to being able to search for a specific bug ID, or for all bugs in a product and release, you can filter the open and/or resolved bugs by one or more of the following criteria:
-
Last modified date
-
Status, such as fixed (resolved) or open
-
Severity
-
Support cases
You can save searches that you perform frequently. You can also bookmark the URL for a search and email the URL for those search results.
Note |
If the defect that you have requested cannot be displayed, this may be due to one or more of the following reasons: the defect number does not exist, the defect does not have a customer-visible description yet, or the defect has been marked Cisco Confidential. |
We recommend that you view the field notices for the current release to determine whether your software or hardware platforms are affected. You can access the field notices from the following location:
Resolved Bugs for Cisco IOS XE 17.7.1a
| Bug ID | Headline |
|---|---|
| CSCvz98446 | VG400 crashed when changing Debug Level |
| CSCvy38743 | CISCO-CLASS-BASED-QOS-MIB doesn't work with LTE Cellular interface on ISR1100X after reload |
| CSCvy27721 | IOS-XE Router may experience unexpected reboot with X25 RBP |
| CSCwa10915 | ASR 1000 PFRv3: Elephant flow will trigger performance monitor exporting more than 50% byte loss |
| CSCvy42216 | "switchport trunk native vlan xx" gets removed when upgrading from 16.12.x to 17.3.3 |
| CSCvy53885 | ip pim rp-candidate command removed after reload when group list is configured |
| CSCvz21812 | QoS policy update with "random-detect dscp" configuration get rejected on device side |
| CSCvy54964 | Large tx/rx rate on Dialer interface in show interface output. |
| CSCvy08748 | OSPF summary-address isn't generated though candidate exists |
| CSCvy99942 | Netconf: Logging to syslog stops working in certain scenarios |
| CSCvx62167 | Route-map corruption when configured using Netconf with ncclient manager |
| CSCvw16093 | Secure key agent trace levels set to Noise by default |
| CSCvt66541 | Crypto PKI-CRL-IO process crash when PKI trustpoint is being deleted |
| CSCvy93946 | Removal of SHA-1 HMAC Impacting ability to SSH |
| CSCwa26599 | FN980 new signed Telit modem firmware FN980M_38.02.X92 upgrade failed |
| CSCvz58895 | IOS-XE unable to export elliptic curve key |
| CSCvy22343 | Crash after reapplying BGP/ attempt to initialize an initialized wavl tree |
| CSCvz84437 | C8500L Unexpected reload due IPV6 UDP fragment header in VxLAN |
| CSCvy63983 | vManage showing wrong interface status in GUI |
Open Bugs for Cisco IOS XE 17.7.1a
| Bug ID | Headline |
|---|---|
| CSCwa07494 | IPSec tunnel not passing traffic when IPSec tunnel is sourced from VASI interface |
| CSCwa20814 | Device hitting vulnerability CVE 2008-5161 |
| CSCvz74322 | "Shutdown" command visible in running config after reload of ASR 1002-HX |
| CSCwa46001 | VRRP traffic sent while the device boots will congest the interface queue causing taildrops |
| CSCvz94966 | ASR 1000 and C8500 throughput drop of 10% from 17.3 to 17.6 Release |
| CSCvz72871 | Multicast traffic received over DMVPN tunnel are dropped on RP and not forwarded downstream. |
| CSCwa27659 | Virtual VRRP IP address unreachable from the BACKUP VRRP |
| CSCvz41067 | IP Community-list config out of sync in sdwan and ios-xe |
| CSCwa22665 | Memory leak in scaled EIGRP DMVPN implementation due to EIGRP: mgd_timer |
| CSCvz91913 | C8500-12X4QC: Bay 2 startup config of 40Gbps not applied on reload |
| CSCvw06937 | SNMv3 traps failing with initial configuration |
| CSCvz80012 | C8500L as a border device fails to pass traffic in sda fabric - VxLAN GPE broken |
| CSCvz86580 | Unable to remove the BGP neighbor statement through vManage template. |
| CSCvz20285 | Image info not updated in packages.conf when upgrading in autonomous mode |
| CSCwa01804 | Router ASR 1000 C8500 ucode crash with PPE DTL transfer error during IP reassembly |
| CSCwa10915 | ASR 1000 PFRv3: Elephant flow will trigger performance monitor exporting more than 50% byte loss |
ROMmon Release Requirements
Use the following table to determine the ROMmon version required for your Catalyst 8500 model:
|
DRAM |
ROMmon version |
|---|---|
|
16 GB(default) |
17.2(1r) |
|
32 GB |
17.2(1r) |
|
64 GB |
17.3(2r) |
Related Documentation
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Cisco Bug Search Tool
Cisco Bug Search Tool (BST) is a web-based tool that acts as a gateway to the Cisco bug tracking system that maintains a comprehensive list of defects and vulnerabilities in Cisco products and software. BST provides you with detailed defect information about your products and software.
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Troubleshooting
For the most up-to-date, detailed troubleshooting information, see the Cisco TAC website at https://www.cisco.com/en/US/support/index.html.
Go to Products by Category and choose your product from the list, or enter the name of your product. Look under Troubleshoot and Alerts to find information for the issue that you are experiencing.
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