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Mon, 18 Jan 2021 07:57:38 +0000 From: Raffaele BELARDI To: "gentoo-user@lists.gentoo.org" Subject: RE: [gentoo-user] network transfer speed Thread-Topic: [gentoo-user] network transfer speed Thread-Index: AQHW6wuzp2fH4sihwUeHTIXJVg48vaooTg8wgAD/PwCAAFTEgIABFkyAgAAGowCAAkiVUA== Date: Mon, 18 Jan 2021 07:57:38 +0000 Message-ID: References: <33c5a9af-5ac7-5159-1cd1-c1a38bd522e6@sys-concept.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: msip_labels: MSIP_Label_cf8c7287-838c-46dd-b281-b1140229e67a_Enabled=true; MSIP_Label_cf8c7287-838c-46dd-b281-b1140229e67a_SetDate=2021-01-18T07:52:27Z; MSIP_Label_cf8c7287-838c-46dd-b281-b1140229e67a_Method=Privileged; MSIP_Label_cf8c7287-838c-46dd-b281-b1140229e67a_Name=cf8c7287-838c-46dd-b281-b1140229e67a; MSIP_Label_cf8c7287-838c-46dd-b281-b1140229e67a_SiteId=75e027c9-20d5-47d5-b82f-77d7cd041e8f; MSIP_Label_cf8c7287-838c-46dd-b281-b1140229e67a_ActionId=468ba60e-8999-4078-9757-c798f35fea09; MSIP_Label_cf8c7287-838c-46dd-b281-b1140229e67a_ContentBits=0 authentication-results: lists.gentoo.org; 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charset="us-ascii" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply MIME-Version: 1.0 X-OriginatorOrg: ST.COM X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: DB8PR10MB3306.EURPRD10.PROD.OUTLOOK.COM X-MS-Exchange-CrossTenant-Network-Message-Id: b335597d-f3b1-41de-ba81-08d8bb86b9c1 X-MS-Exchange-CrossTenant-originalarrivaltime: 18 Jan 2021 07:57:38.8591 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 75e027c9-20d5-47d5-b82f-77d7cd041e8f X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: vKx762aHIArRVy11uWLFb7slrTn/FVDF8pigwAW/wQdN4RZM8+xo5x1OHR71xKjrKWR6jTdOOl2q0SYRQJtvrw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB8PR10MB3861 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.343,18.0.737 definitions=2021-01-18_07:2021-01-15,2021-01-18 signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 clxscore=1015 impostorscore=0 lowpriorityscore=0 bulkscore=0 priorityscore=1501 adultscore=0 phishscore=0 spamscore=0 malwarescore=0 mlxscore=0 mlxlogscore=725 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2101180046 X-Archives-Salt: fe3625aa-70da-41b6-814c-97574806005a X-Archives-Hash: de167377f5ad94aeb0389d9fb7173fb1 > -----Original Message----- > From: Jack > Sent: Saturday, January 16, 2021 22:00 > To: gentoo-user@lists.gentoo.org > Subject: Re: [gentoo-user] network transfer speed >=20 > I may be way off base here, but if the switch is connected to a router, > packets from one PC go to the switch and then to everything else connecte= d > to it, including both the other PC and the router. Is there any chance t= he > router is passing packets back to the switch to get to the second PC? I = can > imagine that causing lots of problems. However, I would hope it is smart > enough to know it doesn't need to do so, since both PCs show up on the > same router port. A switch uses the Ethernet MAC destination address to forward a packet only= on the 'interested' ports. What you describe would be a 'hub' [1], I don't= think it's easy to find one of those on recent networks. Raffaele [1] https://en.wikipedia.org/wiki/Ethernet_hub