官方描述：MS355-48X2-HW Meraki MS355-L3 Stck Cld-Mngd 48GE, 48xmG UPOE Switch.

MS355-48

概述 

MS355 是多千兆位交换机系列，旨在帮助组织做好准备，满足即将推出的 802.11ax 无线标准的更高带宽要求，具有高计数 mGig 交换机端口和更高的交换容量，以满足下一代接入点的需求。具有大规模无线部署的网络（例如大学、医院和大型公共综合体（例如交通中心））都可以从 MS355 增强的带宽能力中受益。 

MS355 系列拥有 4 种不同型号，每种型号均具有多个能够协商高达 10Gbps 的 mGig RJ45 端口、40G QSFP+ 端口和专用 100G 硬件堆叠端口，已做好充分准备，支持未来在各种不同的环境中部署 802.11ax 无线基础设施。环境。

特征 

通过思科 Meraki 仪表板进行管理 通过 Meraki 仪表板的远程数据包捕获工具自动固件升级 SNMP/系统日志集成 IPv4/6 ACL 支持 802.1q VLAN 标记  广播风暴控制 动态 ARP 检测/DHCP 侦听 802.1X认证

10/100/1000 Mbps RJ45100M/1G/2.5G/5G/10G mGbE  RJ45 4 个 1000/10000 Mbps SFP+ 2 个 40GbE QSFP+ 2 个专用堆叠端口，提供 400G堆叠带宽L3 交换，包括 OSPF UPoE 支持 热插拔电源和风扇 具备热备用功能

Models

Context and Comparisons 

	MS350-24P	MS350-24X	MS355-24X
1GbE RJ45	24	16	16
mGbE RJ45 (100M/1G/2.5G/5G/10G)	–	8	8
10GbE SFP+	4	4	4
40GbE QSFP+	–	–	2
Hardware Stack Port	2	2	2
Dedicated Management Interface	1	1	1
Hot Swap Power Supply	Yes, Dual	Yes, Dual	Yes, Dual
Hot Swap Fans	Yes, 2x	Yes, 2x	Yes, 3x
Layer 3 Routing	Yes	Yes	Yes
UPoE Capable	No, 370W	Yes, 740W	Yes, 740W
Max Switching Capacity	128 Gbps	272 Gbps	352 Gbps
Max Stacking Bandwidth	160 Gbps	160 Gbps	400 Gbps

Technical Breakdown  

Hardware Breakdown

	MS355-24X	MS355-24X2	MS355-48X	MS355-48X2
1GbE RJ45	16	–	32	24
mGbE RJ45 (100M/1G/2.5G/5G/10G)	8	24	16	24
10GbE SFP+	4	4	4	4
40GbE QSFP+	2	2	2	2
Hardware Stack Port	2	2	2	2
Dedicated Mgmt Interface	1	1	1	1
Hot Swap Power Supply	Yes, Dual	Yes, Dual	Yes, Dual	Yes, Dual
Hot Swap Fans	Yes, 3x	Yes, 3x	Yes, 3x	Yes, 3x

Cabling Best Practices for Multi-Gigabit operations: While Category-5e cables can support multigigabit data rates upto 2.5/5 Gbps, external factors such as noise, alien crosstalk coupled with longer cable/cable bundle lengths can impede reliable link operation. Noise can originate from cable bundling, RFI, cable movement, lightning, power surges and other transient event. It is recommended to use Category-6a cabling for reliable multigigabit operations as it mitigates alien crosstalk by design.

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