I can see what you mean by an uplink port now. I would like to do ISSU. We're launching the "TAC Tools Explained Series" - LEARN MORE. I must admit i refer to an uplink port as any port that is used to connect a switch to a switch which is perhaps where some of the confusion comes in. An uplink in computer networking refers to a wired or wireless connection from a local area network (LAN) to a wide area network (WAN). 1 0 obj Cisco SD-WAN Cloud OnRamp allows you to simplify and secure connectivity to cloud applications and public clouds. Either way, understand the architecture and find out if you have an L3 connections or is everything just l2.

The cisco switch will have 2 additional vlans defined (vlan70, vlan 71), with several ports joined to those vlans. This is reasonable and it was a result of performance tests made by collegues with traffic generator. No matter if it's an uplink port or another port on the switch. also somtimes uplinks can be gorup of ports in one channel called etherchannel. <>/XObject<>/ProcSet[/PDF/Text/ImageC]/ColorSpace<>/Font<>>>/MediaBox[0 0 612 792]/B[14 0 R]/StructParents 12/Annots[15 0 R 16 0 R 17 0 R 18 0 R 19 0 R 20 0 R 21 0 R]/Rotate 0>> However, your understanding is correct in small switches the uplink ports are thought to connect to another switch using a straight cable. this kind of question is becoming old times with the capability to detect what type of port to use: it is called MDIX. For Switches with no mdix feature,but come with up-link ports , can I safely assume that: 1) use cross over cable if you are using up-link ports on both switches. Sarah, the trouble with "up-link" port, its one of those terms that has shades of meaning, the most precise might be a port that is linking to a device up the hiearchy.

), "Sorry Joseph, didn't want to come across so strongly it was just the thought of all those countless hours spent looking for a damn crossover cable ... ", No doubt, which I probably why this feature was on the consumer or end-user level equipment, and not on the equipment used by professionals. Bahahaha! Assuming the network you are working on is totally foreign to you (no topology diagrams, CDP disabled, just inherited an existing design, etc. So i'm not doubting there are some switches where you don't i just didn't want Sarah to get the impression that straight-thru was the common choice because i don't think it was. Interested in testing out the latest Cisco Cloud OnRamp solutions? But your point is valid for the "upscale" switches. i must use cross over cable? 'Show interfaces' can be used for the first and 'show interfaces trunk' for the second. between router-router: cross. In short, MDI connects to MDIX (e.g. ( usually we use straight- through cable to connect pc to switch's regular port, since pins are changed inside up-link port, my understanding is we can't use the straight-through cable). But in general it's a good practice to disable mdix auto and use the correct cable. a) in my previous post I was referring to consumer devices that you can find on shelf in a supermarket (I have one at home) not to Cisco regular series where I still use the old rules. Introduction endobj So the uplink ports have also this meaning: they are designed to carry more traffic. :- �T�U#�� K����=k#��v��y"�;X��6ޛ����'���j!��'EF��? In summary... the quickest and easiest way to find an uplink or any connection is "show cdp neighbor". Uplinkports differ sometimes from regular ports (speed, fiber,...) but not from pinlay-out, http://www.swhowto.com/HomeNetWiring_Ch3.htm, here is the link Davy. And an uplink port on a home router is a special port that is used to connect to a broadband modem (which is a LAN), and ultimately to the internet (which is a WAN).

host to switch) with straight through cable (since one of the ports reverses pins), same port types MDI to MDI (e.g. Would you like to learn how to use tools that can help you troubleshoot your problems? �0����S��%�bX��{V]�W��g� �u�V뮚�u;����wPc��ڳ!|�Ϗ�L�����Zf�����8���g�����.����˿�~�\��U�*�FEE`cp`��W�U��B��ʂ(�?+;��&�fD6�D�E��ʃ$�"[���+[����_�'���,ȉ.&6�8$�b���H�c�D!_�!N�rƆa�„�ɂ"gfxP� � �8 ?��z��I�����g��Ӡ~o�q*e�S�M�E-��sSɨ�������M�ʴ��[�,l�;�^_���prd� ���B�5�S��K�\o��57�L{wrM�(�z㶚�|��Z�;�-�ZŁ���ʻxo�t�F� ^/����f�F#2�\��c���7�f�X/��� �ebf��$����ڄx����Tu��'|_�_C�X�q1���S�myF�G�"���0��M{��[wU�s���u�o�;���j�2��ωM?�� P���~�n�~/���u7�x}��z��?��MQӔ�G$Y1[�V}8xik�LRl��O=+iya��c��3봐F����/.�]ʖ��/�o_���y���hу�����~�C����Ƣ���Z��ހ ��{R]���v^B�� ��" �4�h��ήF��@�莗z/����xv�㻆�i������v�Y I have learned this the hard way with a failed 3560 to 3550 swap. 3) use cross-over cable to connect uplink port to PC. The below command helps to view which port the cisco show MAC address is being learned from.

If auto-MDI/X not supported, you'll likely need a cross-over cable to another switch's port. ����U�"�V�0��"-�vM�Q����%���Au]M*D��� �4=��9�NZ}׌���겺U�ʽ�5���ܹ�NV{����G�ĨsD�"q��մl 7��t h!��m�E]ˋ��� switch will be connected to a port on an extreme switch that is 802.1Q tagged vlan 132. No matter if it's an uplink port or another port on the switch.

group of phisical trunck port will be represented by one logical port Then find out it is part of an etherchannel or not. In one view the correct way is to look for some port of ether channel (port channel) or know that there is an access layer that connects to the distribution layer and look or those connections. H��Wko����_q?^!�{�.�&�n���f��E\4E٬$R�#��}��\Rv�J`� ��̜y����fSV��ᇳ��C��ޗ7M[�Mת|��\�^]���/BU *��(5T��� �n��٥�7-^nVa`�"R�� How will you find out Uplink in L2 switches, uplink is the link from access layer to distribution layer, and should be Trunk link to carry all vlan traffic, not like access port which is a port connected to end stations, also somtimes uplinks can be gorup of ports in one channel called etherchannel, group of phisical trunck port will be represented by one logical port. They might have two physical ports, both really the same port but the pins were different. On switches you can configure mdix auto in interface config mode. Also perhaps why Giuseppe wrote "small switches" and "consumer space there are/have been hubs / switches", which I think would exclude at least the 4500 and 6500 and likely the 3550 too. cflow Request cflow code coverage actionscrft Request CRFT actionsfactory-license customer ordered license level and base apcountiox-manager IOx Managerlicense CSL Software licenseproces... after  iam  install ccp and all prerequisite  ,,, when try to open it found error  (cisco configuration professional use port 2038 and port is blocked or taken by another problem) and it not reserved for any program also i try to ... Catalyst 8000 Edge Platforms Family Overview- Community Live... Catalyst 8000 Edge Platforms Family Overview- FAQ.

I need port 24 of the cisco switch to connect to the extreme port and to have 7 ports (1-7)on the cisco switch joined to the same vlan.

cent-gw# request platform software ? switch to switch) would require a cross over cable to reverse the transmit/receive pins. not like access port which is a port connected to end stations. The easiest way is to perform a basic cdp neighbor and look at what ports are connected to the other switch. in this case .

This event had place on Wednesday 4th, November 2020 at 10hrs PDT  2) if i connect one switch's uplink port to other switch's regular port, i can use straight through cable. Between 2 switches: cross (uplink-regular port/ uplink-uplink/ regular-regular). If I am correct, it means if we have to connect host?pc to uplink port, we must use cross-over cable.Is it correct? Are you sure about this ? We're launching the "TAC Tools Explained Series" - LEARN MORE.

Besides perhaps the pin wiring of these ports being different, they might offer some additional feature not available on all the other ports, perhaps better QoS/CoS or higher bandwidth. We seem to be giving Sarah different answers. cent-gw# request platform software ? Am i right? a crossover cable. VLANs behave much like physical Local Area Networks (LANs), but you can group hosts even if they are not physically co-located.

The issure you're dealing with, when auto-MDI/MDIX isn't supported on the port, is the correct matching of the cable, straight vs. cross-over, and MDI vs. MDIX ports. I've also seen some of these switches where they might have a hardware DIP to reverse the pins on one switch port. b) Another thought about uplink ports in devices like 2950T or similar is that the switching fabric is built in a way that traffic is supposed to flow between user ports and uplink ports. I understand that there may be some old switches that allow this but take any cisco switch such as 3550/4500/6500 and if you wanted to uplink them using a Cat5 cable it would have to be a crossover and before auto-mdix came along i would say the vast majority of switches, at least Cisco, needed crossover connections. All this before auto-mdix and to allow same patch cable as used by clients.

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