WS-X4712-SFP+E:
● 48 gigabits per-slot capacity
● Bandwidth is allocated across four 3-port groups, providing 12 Gbps per port group (2.5:1)
● Up to 12 ports 10GE SFP+ (10GBASE-R) or 12 ports GE SFP (1GBASE-X)
● SFP+ and SFP can be used simultaneously on the same line card without any restrictions
● Cisco IOS® XE Release 3.1.0SG or later
● IEEE 802.1AE and Cisco TrustSec capability in hardware
● L2-4 Jumbo Frame support (up to 9216 bytes)
● Enterprise and commercial: designed for high-speed backbone and switch-to-switch applications
● Service provider: 10GE/GE mix aggregation for DSLAM/PON/mobile data backhaul
● WS-X4712-SFP+E is not supported on 4507R-E and 4510R-E chassis
https://www.cisco.com/c/en/us/products/collateral/interfaces-modules/catalyst-4500-series-line-cards/product_data_sheet0900aecd802109ea.html 如上已经说明了IOS 版本要求,Cisco IOS® XE Release 3.1.0SG or later
2.支持的版本插入进去,不会需要重新配置VSS,
3.我建议是关机在插入板卡, 还有需要注意就是show power 看看电源现在使用率,新增板卡耗电好像是90W 左右