First Published: August 16, 2021

Last Updated: February 3, 2023

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Cisco Catalyst 8000V Edge Software Overview

About Cisco Catalyst 8000V

Cisco Catalyst 8000V Edge Software or Cisco Catalyst 8000V is a software-based, virtual router that combines the functionalities of Cisco Cloud Services Router (Cisco CSR1000V) and Cisco Integrated Services Virtual Router (Cisco ISRv) into a single image that is intended for deployment in cloud and virtual data centers.

Cisco Catalyst 8000V supports NIM modules, runs on any x86 platform, and is supported on ESXi, KVM, NFVIS hypervisors. Further, you can deploy this router on public cloud providers such as Amazon Web Services (AWS), Microsoft Azure, Google Cloud Platform (GCP), and Alibaba Cloud.

When you deploy Cisco Catalyst 8000V on a VM, the Cisco IOS XE software functions as if it were deployed on a traditional Cisco hardware platform. You can configure different features depending on the Cisco IOS XE software image.

Features

  • Hardware independence: The Cisco Catalyst 8000V router uses the benefits of virtualization in the cloud to provide hardware independence. Since the Cisco Catalyst 8000V runs on a virtual machine, you can use this router on any x86 hardware that the virtualization platform supports.

  • Sharing of resources: The resources used by Cisco Catalyst 8000V are managed by the hypervisor, and these resources can be shared among the VMs. You can regulate the amount of hardware resources that the VM server allocates to a specific VM. You can reallocate resources to another VM on the server.

  • Flexibility in deployment: You can easily move a VM from one server to another. Thus, you can move a Cisco Catalyst 8000V instance from a server in one physical location to a server in another physical location without moving any hardware resources.

  • Enhanced software security - Secure Object Store: In Cisco Catalyst 8000V, storage partitions for NVRAM, licensing, and other data are created as Object stores. The individual Object stores are encrypted to ensure data security, and this product is Cisco Secure Development life cycle (CSDL) compliant. Further, Cisco Catalyst 8000V supports a 16G disk cycle profile.

Software Images and Licenses

The following sections describe the licensing and software images for Cisco Catalyst 8000V.

Cisco Catalyst 8000V Software Licenses

The Cisco Catalyst 8000V is licensed based on throughput, feature-set, and the licensing term. This product supports Cisco Smart Licensing Usage Policy as well as Cisco DNA Licensing. Based on whether you want to go for purchased licenses that go with the Cisco Catalyst 8000V instance, or a subscription-based license, choose one of the following options:

Subscription-Based Licensing via Cisco DNA

You can purchase a subscription license for Cisco Catalyst 8000V through the following three licenses that are available via Cisco DNA:

  • Cisco Catalyst 8000V - Network-Premier

  • Cisco Catalyst 8000V - Network-Advantage

  • Cisco Catalyst 8000V - Network-Essentials

For more information on Cisco Catalyst 8000V DNA licensing, see Cisco DNA Software Routing Subscription Guide.

Bring-Your-Own-Licensing

You also have an option to purchase and use licenses with Cisco Catalyst 8000V as a Bring-Your-Own-License (BYOL) instance or as a Pay-As-You-Go (PAYG) instance.

To use a Cisco Catalyst 8000V - BYOL license, see Licenses and Licensing Models to know to how install and configure your license.

If you have upgraded to Cisco Catalyst 8000V from a Cisco CSR 1000V or a Cisco ISRV, you must use Smart Licensing Using Policy (SLP). Traditional licenses do not work after the upgrade.


Note

Starting from Cisco IOS XE 17.4.1, with the introduction of Smart Licensing Using Policy, even if you configure a hostname for a product instance or device, only the Unique Device Identifier (UDI) is displayed. This change in the display can be observed in all licensing utilities and user interfaces where the hostname was displayed in earlier releases. It does not affect any licensing functionality. There is no workaround for this limitation.

The licensing utilities and user interfaces that are affected by this limitation include only the following:

  • Cisco Smart Software Manager (CSSM),

  • Cisco Smart License Utility (CSLU), and

  • Smart Software Manager On-Prem (SSM On-Prem).

Pay-As-You-Go Licensing

Cisco Catalyst 8000V supports the PAYG Licensing model with Amazon Web Services (AWS) and Microsoft Azure Marketplace. Cisco Catalyst 8000V hourly-billed AMI or Pay As You Go licensing model allows you to consume an instance for a defined period of time. In this licensing model, you can directly launch the instance from the AWS or Azure Marketplace and start using the instances. The licenses are embedded in the image.


Note

For demo or evaluation licenses, contact your Cisco Account Team if you have a direct purchase agreement with Cisco, or your Cisco Partner or Reseller.

For a more detailed overview on Cisco Licensing, go to https://cisco.com/go/licensingguide.

Software Image Nomenclature for Installation Files

The Cisco Catalyst 8000V installation file nomenclature indicates properties supported by the router in a given release.

For example, these are filename examples for the Cisco IOS XE Bengaluru 17.4.1a release:

  • c8000v-universalk9.17.04.01a.ova

  • c8000v-universalk9.17.04.01a.iso

  • c8000v-universalk9.17.04.01a.qcow2

The following table lists the filename attributes along with its properties:

Table 1. Installation Filename Attributes

Filename Attribute

Properties

universalk9

Specifies the package that you are installing.

17.04.01a

Indicates that the software image is mapped to the Cisco IOS XE Bengaluru 17.4.1a release.

New and Enhanced Features for Cisco IOS XE Bengaluru 17.6.x

New and Enhanced Features for Cisco IOS XE Bengaluru 17.6.x


Note

Cisco IOS XE Bengaluru 17.6.1a is the first release for Cisco Catalyst 8000V in the Cisco IOS XE Bengaluru 17.6.1 release series.

The following are the new Cisco Catalyst 8000V software features for Cisco IOS XE Bengaluru Release 17.6.x:

Table 2. Software Features in 17.6.1a

Feature

Description

AWS Metadata Version 2

Earlier, when you deployed Cisco Catalyst 8000V on Amazon Web Services, only version 1 or V1 was applicable for the Metadata Accessible field. Starting from Cisco IOS XE Release 17.6.1a, metadata version 2 or V2 is also supported. Now, you can either select the V1 and V2 (token optional) option or the V2 (token required) option. When you select either of these options, the instance uses session-oriented requests by creating tokens. The tokens are then used to fetch all the required metadata for your instances.

Automatic Mapping of Cisco CSR 1000V or Cisco ISRv Licenses to DNA Tier Licenses

The Cisco Smart Software Manager (CSSM) manages licenses of all the Cisco devices including Cisco CSR 1000V and Cisco ISRv, which have an end-of-life milestone of year 2022. To continue to keep your Smart Account active, it is mandatory to move to Cisco DNA tier-based licenses. After you activate your Cisco DNA license, CSSM automatically maps the device licenses (CSR 1000V or Cisco ISRv) to your Cisco DNA tier license.

Support for ESXi 7.0

Cisco Catalyst 8000V supports ESXi 7.0 and 6.7 from Cisco IOS XE 17.6.1a. Note that support for ESXi 6.5 has been deprecated.

Zone-Based Firewall Policy Reclassification

The Zone-Based Firewall (ZBFW) Policy Reclassification feature is an enhancement to the Zone-Based Firewall feature. With this enhancement, any changes you make to the policy configuration on an existing firewall session is immediately enforced.

Asymmetric Lease for DHCPv6 Relay Prefix Delegation

This feature allows you to manage or change the lease renewal. It provides options to force renewal of lease and also detects when the lease is nearing the expiry date.

Upgrade to pyang version 2.x

The updated pyang plugin version 2.x fixes existing issues such as XPATH validation and upstream pyang issues. Additionally, this version reports all errors in the YANG models to the users and enforces a strict model validation.

WebSocket Based Forking for Cloud Speech Services in CUBE

From Cisco IOS XE Bengaluru 17.6.1, CUBE can use WebSockets to handle media forking in a Cisco Unified Contact Center Enterprise (UCCE) solution deployment with Cloud Speech Services. WebSockets transport multiple media streams over a single reliable TLS connection that may traverse firewalls without the need for special policies. WebSocket traffic is also compatible with HTTP load balancers and proxies.

Support for OPUS Codec Transcoding in CUBE

From Cisco IOS XE 17.6.1 onwards, CUBE can transcode Opus encoded media streams. Because Opus codecs perform very well over the Internet, this feature is particularly beneficial when routing calls between the PSTN and Cloud calling services. See also https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/voice/cube/ios-xe/config/ios-xe-book/m_transcoding.html.

Class of Restriction YANG Configuration Model updates:

YANG models were developed for the following CLIs as part of the Class of Restriction configuration:

  • dial-peer voice <tag> pots/voip corlist

  • dial-peer voice vad

  • dial-peer cor custom name <string>

  • dial-peer cor list <string> member <string>

  • voice num-exp <string1> <string2>

  • voice register pool <string> [no] cor {incoming | outgoing} cor-list-name {cor-list-number starting-number [- ending-number] | default}

Table 3. Software Features in 17.6.2

Feature

Description

Snapshots for PAK Licenses

The library that manages product activation key (PAK) licenses is being deprecated from the software image. To continue supporting and honouring any existing PAK licenses you may have, the system automatically takes a snapshot of the PAK license and triggers a Device-Led Conversion process, to convert the PAK license to a Smart License. For the system to take the snapshot, the software version running on your device must be one of the required releases. For information about the releases in which the system can take a snapshot, and the options that are available with respect to the device and the license, see Snapshots for PAK Licenses.


Note

From Cisco IOS XE Bengaluru 17.6.x, configuring a weak crypto algorithm generates a warning. But this warning can be safely ignored and does not impact the working of the crypto algorithms. For more information on weak crypto algorithms, see Supported Standards.

Resolved and Open Bugs for Cisco IOS XE Bengaluru 17.6.x

Resolved Bugs - Cisco IOS XE 17.6.5

Bug ID Headline
CSCwd47123 ISG uses identifier mac-address 0000.0000.0000 when DHCP LQ does not reply
CSCvz93612 %HW_FLOWDB-3-HW_FLOWDB_DBLDEL_FEATOBJ: FlowDB featobj cannot be deleted twice
CSCvy60839 CSDL Compliance: Added a new command to disable weak crypto checking in future releases.
CSCwc82140 QFP Crash When ZBFW configuration features "log dropped-packets" configuration
CSCwc99823 fman crash seen in SGACL@ fman_sgacl_calloc
CSCwc78021 Standby WLC crash @ fman_acl_remove_default_ace
CSCvz92994 Lack of MAC address in the Inform Event message.
CSCwc89328 Device might reboot when supporting explicit IV joins the SD-WAN network
CSCwb52324 C8000V unexpectedly reloads due to QFP ucode crash
CSCwd71584 DSPware 58.5.2 release targeting v176_throttle
CSCwd61255 Data Plane Crash on the device when Making QOS configuration changes
CSCwb04815 NHRP process takes more CPU because of FlexVPN event trace
CSCwc22314 RTSP Traffic not being rewritten by NAT
CSCwd30578 Wired guest client stuck at IP_LEARN with dhcp packets not forwarded out of the foreign to anchor
CSCwd56131 LTE modem doesn't show GSM bands
CSCwb73395 Need CLI option to disable ALG
CSCwc54463 Device LAN module is down when high CPU noticed
CSCwc72923 ERROR info: Router configuration failed:interface Serial0/1/0:23 isdn switch-type primary-ntt
CSCwc84967 Intermittent double DTMF due to changing timestamp on a DTMF event
CSCwb08057 Number of lite sessions conversion in progress counter not decrementing on failed account-logon
CSCwc29629 Crashes when Virtual-Access tries to bring-up/bring-down OSPFv3 IPsec crypto session authentication
CSCwc77981 C8000V crashed - track the fman-fp's memory leak caused by cond-debug
CSCwb32635 Device vdaemon file is incomplete when running admin-tech
CSCwd72312 GETVPN : Traffic drops seen on GM after rekey installing policies

Open Bugs - Cisco IOS XE 17.6.5

Bug ID Headline
CSCwd79089 Device controller crash when sending full line rate of traffic with >5 Intel AX210 stations
CSCwd90168 Unexpected reload after running 'show voice dsp' command while an ISDN call disconnects
CSCvq81894 Check nexthop reachability before installing route for a prefix
CSCwb99084 OMP routes carrying prepended AS_PATH incorrectly imported into BGP at remote site
CSCwb89958 Unified Policy HSL does not send NBAR application information properly
CSCwd07580 Azure: C8000V QFP uCode crash due to MLX4 driver
CSCwd92344 C8000V crash observed in Azure due to Segmentation Fault with MLX5 drivers
CSCwd89338 Clear ISG existing lite-session upon reception of DHCP packet for same client
CSCwd71458 Outgoing number of bytes decrease in router' interface
CSCwd97676 VMware C8000V 'show interfaces' counters are incorrect and display extremely large values
CSCwd49177 ISG: L2-connected subscriber: IPv6 prefix delegation is not reachable when packets are switched

CSCwe19617

Bash core observed on C8000V in the idle state.

Resolved Bugs - Cisco IOS XE 17.6.4

Bug ID Headline
CSCwb95559 Packet Sanity failed for Resolution Reply on Spoke due to missing SMEF capability
CSCvz93712 VFR is enabled by feature NAT but there is no NAT configured on the interface
CSCwa84919 "Revocation-check crl none" does not failover to NONE DNAC-CA
CSCvz63684 EWC HA pair experiencing IOS tracebacks followed by KEYMAN Crash
CSCwb25137 [XE NAT] Source address translation for multicast traffic fails with route-map
CSCwb02142 Traceback: fman_fp_image core after clearing packet-trace conditions
CSCwc33311 cEdge crash @ imgr_n2_ipsec_sa_ctx_register
CSCwa33174 Azure C8000V: 'show interfaces' counters are incorrect and display extremely large values
CSCwc06967 IOS PKI client uses incorrect search filter for CRL retrieval using LDAPv3
CSCwc37320 RP Switchover Causes Linecard NFS mount Failure Resulting in Memory Leak
CSCwb05743 Crash seen with umbrella config during soak run
CSCvz83016 BFD tunnel uptime does not show correct values post upgrade
CSCwb43605 OMPd crash during RIB-out attribute aspath/community processing
CSCwc13013 IPSec Key Engine process holding memory continuously and not freeing up
CSCwb34625 C8000V auto mode: static ip from bootstrap config overwritten by dhcp on fresh install
CSCwb73511 Device is not able to bring up SIG tunnels after reboot
CSCwb91729 Fix mishandling of policy sequence programming failures and notify with syslog/notification
CSCwa67886 UDP based DNS resolution doesn't work with IS-IS EMCP on IOX-XE
CSCwb85046 Device reloads when group-range is configured under an interface Group-Async
CSCwc39881 C8000V generated from hardware cEdge contains "/" in Common Name
CSCvz23982 IOS sending UP Event for the sub interface which is in down state
CSCvx93283 Service Chain is not created when Tracking is disabled
CSCvz99832 Per class BFD - echo response pkts
CSCwb08636 IPSEC-3-HMAC_ERROR: IPSec SA receives HMAC error seen for TLOCExt setup after upgrade
CSCvx74917 DNS packets are not redirected to configured custom DNS after Umbrella template edit
CSCwa72273 ZBFW dropping return packets from tunnel post upgrade
CSCwb32934 Device does not use QAT when malloc failure
CSCwa08378 C8000V Day0 ZTP ignores crypto configuration before licensing
CSCwa64955 Device loses control connections after installing new enterprise hardware wan edge cert
CSCwa92137 Device is changing ICMP ID in ICMP echo, replies intermittently
CSCwa81471 AOM pending objects with loopbacks binded to tloc-extended interfaces
CSCwb49857 Memory leaks on keyman process when key is not found
CSCwb76866 CSDL failure: Use of MD5 by IPSEC key engine is denied
CSCwb55683 Large number of IPSec tunnel flapping occurs when underlay is restored
CSCwa80826 IOS-XE: Devices running crypto ipsec policy experience installation failure
CSCwb83376 Device endpoint-tracker cannot be configured on a 100G interface
CSCwc13304 Per-tunnel QoS counters and shapers not working for some bfd tunnel with stale 'nh_overlay' objects
CSCwa67398 NAT translations do not work for FTP traffic in device
CSCwb78173 CSDL failure: IPSec QM Use of DES by encrypt proc is denied
CSCwb76170 IPsec SIG auto tunnels are not coming up
CSCwb41907 CPP uCode crash due to ipc congestion from dp to cp
CSCvy54048 CPP Unexpected reboot occurs while freeing CVLA chunk
CSCwa30857 Internet SpeedTest with loopback binding mode doesn't work with implicit ACL drop for return traffic
CSCwb14020 Serial interface stuck in "line protocol is down" state after it went down and is recovered
CSCwa98545 Checks of route leaks creates memory corruption
CSCwb46649 NAT translation does not show (or use) correct timeout value for an established TCP session
CSCwa08847 ZBFW policy stops working after modifying the zone pair
CSCwb58468 Sig Autotunnels:tunnel 409 response received
CSCwa26599 FN980 new signed Telit modem firmware FN980M_38.02.X92 upgrade failed
CSCwb12647 Device crash for stuck threads in cpp on packet processing
CSCwc04688 Device crash observed after enabling NWPI trace with IPv6 traffic
CSCwb76988 IKEv2 fragmentation causes wrong message ID to be used for EAP authentication
CSCvw50622 Nhrp network resolution not working with link-local ipv6 address
CSCwa57873 Incorrect reload reason - Last reload reason: LocalSoft for Netconf Initiated request
CSCvz37340 The [service timestamps log datetime msec localtime] command cannot be pushed via CLI Addon template
CSCwb99793 CRL verification failure results in 400 Bad Request with DigiCert
CSCwb90470 Device crashed with last reload reason 'Critical process cxpd fault'
CSCwb32059 Cellular interface tracker down but NAT route persists in the Service VPN Routing Table
CSCwb51595 Missing IOS config (voice translation rule) on upgrade
CSCwb40575 After upgrade, umbrella dns config set to NONE in show umbrella config
CSCwb18315 Umbrella DNS security policy doesn't work with Cloud onRamp with SIG tunnels
CSCwb13850 License boot level not detected with Day0 after C8000V boots on NFVIS platforms
CSCwc04289 Inconsistency between Path MTU Discovery result and Tunnel MTU

Open Bugs - Cisco IOS XE 17.6.4

Bug ID Headline
CSCwc29629 Crashes when Virtual-Access tries to bring-up/bring-down OSPFv3 ipsec crypto session authentication
CSCwc23077 Firewall drop seen stating FirewallL4
CSCvz92994 Lack of MAC address in Inform Event message.
CSCwc50477 Device crashed in ipv4_nat_create_out2in_session_entry
CSCwc55260 Memory leak due to FTMd process
CSCwb99084 OMP routes carrying prepended AS_PATH incorrectly imported into BGP at remote site
CSCwb89958 Unified Policy HSL not sending proper NBAR application information.
CSCwc59598 Statistics collection causes service-side BFD to flap on every collection interval
CSCwc22314 RTSP Traffic not being rewritten by NAT
CSCwb83236 Traceback: QFP core after pushing data policy with IPv6 interface
CSCwc67465 Router cannot be upgraded
CSCwc63563 Unable to set specific speed and duplex values on SFP ports on IOS-XE routing platforms
CSCwc43973 DLC is not completing after upgrading to Smart licensing from CSL
CSCwc30050 UTD: Exception in utd_logger.py due to missing extra-data in AMP alert
CSCwc27208 BFD sessions not coming up because of ANTI-REPLAY-FAILURES

CSCwc25291

NIM-LTE-EA No Data - Requires subslot reload to recover

CSCwd36511

Ping fail to VRRP virtual IP address.

Resolved Bugs - Cisco IOS XE 17.6.3a

Bug ID Headline
CSCvy63924 Telemetry: IOS-XE Controller crashes after using 'show telemetry ietf subscription all' command.
CSCwa13553 C8000V QFP core due to NAT scaling issue
CSCvx40516 17.5 ZBFW + NAT: Traffic flow In2Out scenario failed
CSCwa26509 Shut/no shut of endpoint-tracker attached tunnel, doesn't create probe again on 17.6.2
CSCvz98373 ZBFW : FirewallPolicy drops seen with RTSP traffic in steady state
CSCvz71436 Call Placing issue from SCCP phones
CSCvy69846 Guestshell:.py files stored under /home/guestshell are lost after reboot on 1ng device
CSCvz86591 VRF-aware static NAT with route-map and reversible not working
CSCwa30988 CoS preservation not working for the services EVPL and EPL tunnel
CSCwa36699 Prefetch CRL Download Fails
CSCvv82985 dhcpv6_relay:dhcp-client on branch not receive ipv6 address
CSCwa76260 IKEv2 Deprecated Ciphers denied by Crypto Engine CDSL - Cicso PSB Security Compliance
CSCvt66541 Crypto PKI-CRL-IO process crash when PKI trustpoint is being deleted
CSCwa11150 E1 configurations (under Serial interface) lost after reload.
CSCvz65545 ISIS reports encode error when NSF cisco if configured for GRE tunnel number greater than 65535
CSCvz41647 Partial multicast drops are seen after a failover event in a site with two cedges
CSCvz76277 Hostname not allowed beginning with numbers
CSCvz34668 Static mapping for the hub lost on one of the spokes
CSCvz84437 Unexpected reload due IPV6 UDP fragment header in VxLAN
CSCwa15085 Router Crash due to Stuck Thread with appnav-xe dual controller mode.
CSCvx28426 Router may crash due to Crypto IKMP process
CSCwa18177 Flapping bidirectional/unidirectional packet capture option with ipv4 filter for long time failed

CSCvy97741

Multiple qfp-ucode crash when making a blind transfer from an outside SIP service

Open Bugs - Cisco IOS XE 17.6.3a

Bug ID Headline
CSCvz93712 VFR is enabled by feature NAT but there is no NAT configured on the interface
CSCvy72970 Active ftp not working with UTD+HTX for security and Unified policy.
CSCvz05814 Cwand issue observed ..potential crash
CSCwb25913 After configuring match input-interface on class-map, router goes into a reboot loop
CSCwb03455 Inter-vrf route leaking not working and packet drop seen due to Ipv4 Unclassified
CSCwb32934 QAT is not used during malloc failure
CSCwa08378 C8000V Day0 ZTP ignores crypto configuration before licensing
CSCwb13820 C8Kv crashed at high scale with IPSEC and heavy features configured
CSCwb08186 E1 R2 - dnis-digits cli not working
CSCwb26741 ZBFW performance variance observed with 17.6 images on 8v CPU due to rx_miss errors
CSCwa81471 AOM pending objects with loopbacks binded to tloc-extended interfaces
CSCwa68471 Traceback: CPP ucode core generated after HSRP priority change
CSCvz28950 DMVPN phase 2 connectivity issue between two spokes
CSCwb18223 SNMP v2 community name encryption problem
CSCvy54048 CPP Unexpected Reboot While Freeing CVLA Chunk
CSCwa98545 Checks of route leaks creates memory corruption.
CSCwa76875 After configuring match input-interface on class-map, router goes into a reboot loop
CSCwa08847 ZBFW policy stops working after modifying the zone pair
CSCwa29964 SCEP fails if AAAA DNS repy is received and source interface has no IPv6 address
CSCvz55275 Show DMVPN command displays incorrect state
CSCwa74499 ZBFW seeing the SIP ALG incorrectly dropping traffic and resetting connection
CSCvz74322 "Shutdown" command visible in running config after reload of instance

Resolved Bugs - Cisco IOS XE 17.6.2

Caveat ID Number

Description

CSCvz08449

Cat8kv - Incorrect static route for primary interface during deployment resulting in unreachability

Open Bugs - Cisco IOS XE 17.6.2

There are no open bugs for this release.

Resolved Bugs - Cisco IOS XE 17.6.1a

Caveat ID Number

Description

CSCvw83359

AWS:C8000V crashed and reboots if shut/no shut an interface a number of times.

CSCvy52270

CSR1000V/C8000V: Console Port Access change CLI does not work in the CONTROLLER mode.

CSCvx86151

ovf-template should give option for DNA essentials, advantage, premier on C8kv deployment in vcenter

CSCvv35440

C8000v WebUI is not accessible by user.

Open Bugs - Cisco IOS XE 17.6.1a

Caveat ID Number

Description

CSCvx94285

C8000V crashes after oce_lookup_one_adj_id_handle while reading emu_mem.

CSCvz22268

With crl schedule download, stuck Failed to send the request. There is another request in progress.

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