Release Notes for Cisco 1000 Series Integrated Service Routers, Release 17.18.x
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Cisco 1000 Series Integrated Services Routers, Release 17.18.1a........ 3
Cisco 1000 Series Integrated Services Routers, Release 17.18.1a
Cisco IOS XE 17.18.1a is the first release for Cisco 1000 Series Integrated Services Routers in the Cisco IOS XE 17.18.x release series.
The key highlights of this release include:
● Monitoring & Observability
● Cellular, IPv6, Voice, Virtualization
● SRv6 Enhancements
● Security and SASE enhancements
New software features
This section provides a brief description of the new software features introduced in this release.
Table 1. New software features for Cisco 1000 Series Integrated Services Routers, Release 17.18.1a
| Product impact |
Feature |
Description |
| Ease of Use
|
From Cisco IOS XE 17.18.1a release, you can now upgrade the firmware image for cellular module, LTE module, or Wi-Fi module of supported devices using Cisco Catalyst SD-WAN Manager, without configuring and managing multiple commands for each device and its associated modules. |
|
| Ease of Use
|
From Cisco IOS XE 17.18.1a release, Cisco Catalyst SD-WAN Manager supports deployment of IOx applications such as Cyber Vision, Thousand Eyes, UTD, and so on. The support to monitor these applications is introduced through Hosted Edge Services monitoring dashboard which offers a simplified user experience for overseeing IOx container applications across multiple devices. The Hosted Edge Services monitoring dashboard is introduced on Cisco Catalyst SD-WAN Manager version 20.18.x. |
|
| Ease of setup
|
Cisco Secure Routers SWIM and Onboarding Tool
|
Cisco IOS XE 17.18.1a introduces the Cisco Secure Routers Software Image Management (SWIM) and Onboarding tool that helps customers upgrade and onboard autonomous hardware devices to cloud-hosted or on-premises Catalyst Cisco SD-WAN Manager. |
| Security
|
From Cisco IOS XE 17.18.1a release, Custom IPS signature sets are supported in Cisco SD-WAN Manager, which allows you to create and deploy personalized Snort3 IPS signature sets.This feature allows direct modification of actions for existing IPS rules within profiles and supports building custom rules using rule groups or existing rules. With Custom IPS signature sets, organizations can gain greater control and precision in tailoring threat detection to their specific security needs. |
|
| Ease of Use
|
This feature introduces a new certificate authorization setting, Enterprise Certificate Settings, which unifies certificate configurations for SD-Routing devices. Cisco SD-WAN Manager automates certificate management by leveraging protocols like EST (Enrolment over Secure Transport) and SCEP (Simple Certificate Enrolment Protocol). The feature automates the enrolment, and renewal of certificates. |
|
| Ease of use
|
Configure cellular band select for cellular interfaces on SD-Routing devices |
You can select specific frequency bands to which the device can connect to, allowing optimized connection depending on location and network availability. This configuration can be done using Feature Parcels in Catalyst Cisco SD-WAN Manager. |
| Ease of use
|
Configure logging of crash dump events for cellular interfaces on SD-Routing devices |
You can configure the device to collect the crash dump logs by enabling the boot-and-hold mode on the device using the lte modem crash-action boot-and-hold command. |
| Ease of use
|
Reset cellular profile for cellular interfaces on SD-Routing devices |
You can reset the cellular network profile settings on a specific interface to a factory default state using the cellular<slot> lte profile reset command. |
| Ease of use
|
You can enable diagnostic monitoring log capture for devices with cellular interfaces using Catalyst Cisco SD-WAN Manager. |
|
| Ease of Use
|
Show drops command
|
The *show drops* command is introduced in Cisco IOS XE 17.18.1a. This command consolidates multiple platform and protocol-specific debugging tools into a single, user-friendly interface, enabling network operators to efficiently identify the root causes of packet drops. By streamlining the troubleshooting process, this feature significantly improves operational efficiency and network performance. |
| Upgrade
|
This feature enables the transport of IPv4 MVPN traffic across an SRv6 network. It simplifies multicast deployment by using the existing SRv6 unicast infrastructure as the underlay. With this feature, the ingress PE router receives multicast traffic and creates a separate unicast SRv6-encapsulated copy for each egress PE router in the multicast group. |
|
| Upgrade
|
This feature introduces a mechanism to determine the maximum transmission unit (MTU) for packets traversing an SRv6 underlay network. It ensures efficient packet forwarding by preventing fragmentation and packet drops, thereby allowing network devices to dynamically adjust packet sizes to avoid exceeding link MTU limits. The system relays ICMP Packet Too Big (PTB) messages from the SRv6 underlay to the IPv6/IPv4 overlay network, supporting both Transit-node and Headend-node PTB relay methods. |
|
| Upgrade
|
From Cisco IOS XE 17.18.1a, Flexible Algorithm enhances SRv6 by including functions like Topology Independent Loop-Free Alternate (TI-LFA) and microloop (uLoop) avoidance. This feature improves network resilience and efficiency. |
|
| CUBE FEATURES |
||
| Ease of Use |
From Cisco IOS XE 17.18.1a onwards, serviceability is enhanced to display consolidated information on forked and associated anchor call legs. |
|
| Upgrade |
Third-Party GUID capture for correlation between call transfers and SIP-based recording |
From Cisco IOS XE 17.18.1a onwards, the Third-Party GUID capture for correlation between calls and SIP-based recording is extended to support transmission of globally unique identifiers (GUIDs) to the recording server during call transfers. |
| Upgrade |
IOS UC apps reports smart licensing flex subscription entitlement tag |
From Cisco IOS XE 17.18.1a onwards, CUBE and SRST smart licensing reports flex subscription entitlement tag on all the supported platforms. |
This table lists the resolved issues in this specific software release.
Note: This software release may contain bug fixes first introduced in other releases. To see additional information, click the bug ID to access the Cisco Bug Search Tool. To search for a documented Cisco product issue, type in the browser: <bug_number> site:cisco.com.
Table 2. Resolved issues for Cisco 1000 Series Integrated Services Routers, Release 17.18.1a
| Bug ID |
Description |
| 17.16 SIG zscaler ipsec - vpn credentials for primary tunnel not created |
|
| Device crashed @bfd_send_and_detect_sleep_time during soak run |
|
| Unable to come up control connections with controllers after controllers added and down/up |
|
| All BFD sessions for dialer interfaces are down. SA ID is 0 for all of them. |
|
| Memory leak under vdaemon process with DTLS on SNMP polling |
|
| Device reloads after VPN config changes on SDWAN |
|
| Speed test download / throughput issue on device seen with IPSEC ESP-NULL transform using Zscaler |
|
| CXP with Data Policy redirect-DNS via overlay causes blackhole |
|
| BFD sessions via TLOC-Ext do not come up when IPv6 is dynamically changed |
|
| SD-WAN: VFR is not dynamically disabled After ZBFW Removal |
|
| Maximum control connection is not equal to maximum omp sessions |
|
| FTMD zero pointer dereferences leading to crash |
This table lists the open issues in this specific software release.
Note: This software release may contain open bugs first identified in other releases. To see additional information, click the bug ID to access the Cisco Bug Search Tool. To search for a documented Cisco product issue, type in the browser: <bug_number> site:cisco.com.
Table 3. Open issues for Cisco 1000 Series Integrated Services Routers, Release 17.18.1a
| Bug ID |
Description |
| Device unexpectedly reloads due to memory corruption on a notification queue in FTMd |
|
| BFD session down due to unencrypted outbound BFD packets despite active IPsec SA |
|
| Device may boot up into prev_packages.conf due to power outage |
|
| Keyman core files on device |
|
| EPFR-High latency times are observed on the hub device |
|
| Memory leak under cfgmgr process on SNMP polling |
|
| Device does not install service-side static route to CEF after upgrade |
|
| Unexpected reboot occurs due to process FTMD |
|
| TLOC disabled after link down; no automatic tunnel recovery after link restores and TLOC state Is Up |
|
| EM9293 module not able to acquire GPS coordinates |
ROMmon Compatibility Matrix
The following table lists the ROMmon releases supported in Cisco IOS XE 16.x.x releases and Cisco IOS XE 17.x.x releases.
To identify the manufacturing date, use the show license udi command. For example:
Router#show license udi
UDI: PID:C1131-8PLTEPWB,SN:FGLxxxxLCQ6
The xxxx in the command output represents the manufacturing date.
● If the manufacturing date is greater than or equal to 0x2535, the manufactured ROMmon version is 17.6(1r) or higher.
● If the manufacturing date is less than 0x2535, the ROMmon will be automatically upgraded to 17.5(1r) or above when the Cisco IOS XE 17.9.x release is installed.
● The minimal or recommended ROMmon version for devices using Cisco IOS XE 17.5 or later is 17.5(1r) or later.
Table 4. Minimum and Recommended ROMmon Releases Supported on Cisco 1000 Series ISR Routers
| Cisco IOS XE Release |
Minimum ROMmon Release for IOS XE |
Recommended ROMmon Release for IOS XE |
| 17.18.x |
17.5(1r) |
17.5(1r) |
| 17.16.x |
17.5(1r) |
17.5(1r) |
| 17.15.x |
17.5(1r) |
17.5(1r) |
| 17.14.x |
17.5(1r) |
17.5(1r) |
| 17.13.x |
17.5(1r) |
17.5(1r) |
| 17.12.x |
17.5(1r) |
17.5(1r) |
| 17.11.x |
17.5(1r) |
17.5(1r) |
| 17.10.x |
17.5(1r) |
17.5(1r) |
| 17.9.x |
17.5(1r) |
17.5(1r) |
| 17.8.x |
17.5(1r) |
17.5(1r) |
| 17.7.x |
17.5(1r) |
17.5(1r) |
| 17.6.x |
17.5(1r) |
17.5(1r) |
| 17.5.x |
17.5(1r) |
17.5(1r) |
| 17.4.x |
16.12(2r) |
16.12(2r) |
| 17.3.x |
16.12(2r) |
16.12(2r) |
| 17.2.x |
16.9(1r) |
16.12(1r) |
| 17.1.x |
16.9(1r) |
16.12(1r) |
| 16.12.x |
16.9(1r) |
16.12(1r) |
| 16.11.x |
16.9(1r) |
16.9(1r) |
| 16.10.x |
16.9(1r) |
16.9(1r) |
| 16.9.x |
16.9(1r) |
16.9(1r) |
| 16.8.x |
16.8(1r) |
16.8(1r) |
| 16.7.x |
16.6(1r) |
16.6(1r) |
| 16.6.x |
16.6(1r) |
16.6(1r) |
Related resources
● Release Notes for Previous Versions of Cisco 1100 Integrated Services Router
● Data sheet for Cisco 1100 Integrated Services Router
● Software Configuration Guide
● Smart Licensing using Policy
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