.. _ws-c4948-s:

============================
Cisco Catalyst 4948交换机
============================

Catalyst 4948 交换机是 Cisco ``Campus LAN Switches - Core and Distribution`` 系列中的一款限速，低演出，Layer 2-4，1U 固定配置交换机。基于Cisco Catalyst 4500系列硬件和软件架构，Cisco Catalyst 4948系列为高性能服务器和工作站提供了多层聚合能力。

.. figure:: ../../../_static/network/cisco/switch/cisco_catalyst_4948.jpg
   :scale: 60

Cisco Catalyst 4948提供以下硬件及特性:

- 48口线速 10/100/1000BASE-T 以及4个可选光纤 1000BASE-X Small Form-Factor Pluggable (SFP)

- 96 Gbps 无阻塞交换
- 72Mpps (每秒72百万数据包交换)
- 44个 10BASE-T/100BASE-TX/1000BASE-T 以太网接口 + 4个 1000BASE-X SFP 接口(光纤)

功能:

- 2~4层交换服务
- 2层支持 32K MAC地址
- 支持 2048个VLAN 以及 4096个VLAN IDs

  - IEEE 802.1Q VLAN tagging on all ports
  - Q-in-Q for EFM
  - Cisco Inter Switch Link (ISL) tagging on all ports

参考
=======

- `Cisco Catalyst 4900 Series Switches <https://www.cisco.com/c/en/us/support/switches/catalyst-4900-series-switches/series.html>`_
- `Cisco Catalyst 4948 Switch <https://www.cisco.com/c/en/us/products/switches/catalyst-4948-switch/index.html>`_