9407如果使用IOS XE Amsterdam 17.1.x之后的版本,为什么不支持StackWise Virtual??
因为选配引擎卡:C9400X-SUP-2,软件版本必须为17.1.x之后的,但是选择17.1.x之后的又不支持StackWise Virtual。
参考链接:Release Notes for Cisco Catalyst 9400 Series Switches, Cisco IOS XE Cupertino 17.7.x - Cisco
Software Features:
The software features supported on C9400X-SUP-2 maintain parity with the existing supervisor modules, with a few exceptions.
The following software features are not supported: Cisco StackWise Virtual, In-Service Software Upgrade (ISSU), Application Hosting, OpenFlow, High Availability in OpenFlow, and SDM Templates.
Cisco StackWise Virtual can be configured only on one supervisor module per chassis. You must not install two supervisor modules in each chassis used in the Cisco StackWise Virtual solution.
StackWise Virtual also incorporates many other Cisco innovations—such as Stateful Switch Over (SSO), Non-Stop Forwarding (NSF) and Multi-chassis EtherChannel (MEC)—that enable non-stop communication with increased bandwidth to substantially enhance application response time
正常情况下的配置应当可以实现状态化切换,否则就是配置、网络架构、软件层面有问题。
C9400X-SUP-2引擎的最低支持软件版本为17.7.1,但并非代表所有的feature都能完全支持,因为是新的引擎,部分功能的支持会稍稍滞后
查了一下配置文档,从17.9.x之后版本正式支持StackWise功能,建议选用之后版本进行设置,或联系思科获取推荐软件版本
StackWise配置时只支持单框单引擎,不支持双引擎(可参考每个版本配置文档中StackWise限制条件)
正常情况stackwise模式下其中一台设备故障并不会影响业务,除非网络设计中有单独连接其中一台设备的情况。
参考:
感谢答复,还想请教两个问题:
1、使用StackWise Virtual,是不是还得特殊的 ‘C9400-SUP-UPG-LIC’license
Cisco StackWise Virtual is supported on Cisco Catalyst 9400 Series supervisor 1 module (C9400-SUP-1) and Cisco Catalyst 9400 Series supervisor 1XL module (C9400-SUP-1XL). The feature requires a special, additional, C9400-SUP-UPG-LIC= license with Cisco Catalyst 9400 Series supervisor 1 module (C9400-SUP-1). Cisco StackWise Virtual is also supported on Cisco Catalyst 9400X series supervisor 2 module (C9400X-SUP-2) and Cisco Catalyst 9400 Series supervisor 2XL module (C9400X-SUP-2XL).
2、需要 Network Advantage license
Cisco StackWise Virtual configuration commands will be recognised only on a switch running Network Advantage license. The configuration commands will not be recognised on a Network Essentials license.