# What is the use of uplink ports in netwwork switches and give a configuration example

**URL:** <https://forumautomation.com/t/what-is-the-use-of-uplink-ports-in-netwwork-switches-and-give-a-configuration-example/273>\
**Category:** Industrial Networking\
**Created:** [February 26, 2015, 8:23am UTC](https://forumautomation.com/t/what-is-the-use-of-uplink-ports-in-netwwork-switches-and-give-a-configuration-example/273 "2015-02-26T08:23:00Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![omega](https://forumautomation.com/letter_avatar_proxy/v4/letter/o/a6a055/32.png) [@omega](https://forumautomation.com/u/omega)\
**Post date:** [February 26, 2015, 8:23am UTC](https://forumautomation.com/t/what-is-the-use-of-uplink-ports-in-netwwork-switches-and-give-a-configuration-example/273/1 "2015-02-26T08:23:00Z")

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Uplink Ports: In the switch configuration, there are ports which cannot be used when connecting to other switch.This connection is possible only through few ports.So when connecting two switches you should use a crossover cable only o ports where: “spanning-tree portfast” is NOT configured. Broadcast or Multicast policy is enabled "Storm-control"configuration are enabled The “show startup -config"command shows configuration of each port.Following is an examble of port config. Ïnterface FastEthernet0/\* description crossover cable no ip address duplex full switchport mode access storm-control action trap srr-que bandwidth share 1 2 3 4 prority queue out servive policy input cda\_policy speed 100 storm-control broadcast level bps 20M 18M storm-control Multicast level bps 20M 18M”