From owner-freebsd-net@freebsd.org Sat Jul 18 12:56:36 2020 Return-Path: Delivered-To: freebsd-net@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 5D7D736921C for ; Sat, 18 Jul 2020 12:56:36 +0000 (UTC) (envelope-from abb@abbon.net) Received: from c4.eksi.net (c4.eksi.net [194.44.253.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "c4.eksi.net", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4B87KZ5mBfz4HFm for ; Sat, 18 Jul 2020 12:56:34 +0000 (UTC) (envelope-from abb@abbon.net) Received: from C4.Eksi.Net (localhost [127.0.0.1]) by c4.eksi.net (OpenSMTPD) with ESMTP id fbd9ec98; Sat, 18 Jul 2020 15:56:26 +0300 (EEST) DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=abbon.net; h=reply-to:to :from:subject:message-id:date:mime-version:content-type :content-transfer-encoding; s=default; bh=ImagfKTZw/J4Lv9Dy7nXG8 NDzzI=; b=U33khA2RmZXq2uTCizAvBYvSbkKkYP0I5EaPdtCLZUGiOjBBmAQ9yJ a57mhZgA8D3keh94N50si1c4GxvmR9d81EzMNd0uuScCQH9fJy6Ij97MyaRUggyV iKg66pdZv5hXkYXdmKjbA8hfMX8BoQyINDlWxDBWv9Md9e/Mzw62NIwR5JnB9T7I IFt0h+TUtR/cvAv+O68bnwL4crQS3dXZmdMaOO2A7qiz6lDvvYKCkVF79QbldhjA xEp7mmb6yJ2xntCzEHLzf4MVqosR46lFIdSKIL1POyVR4mMhQThGHij0fMWBSZnp K79X9ManQtLVOb8RhTZJY8k5nj60R/rQ== DomainKey-Signature: a=rsa-sha1; c=nofws; d=abbon.net; h=reply-to:to :from:subject:message-id:date:mime-version:content-type :content-transfer-encoding; q=dns; s=default; b=gCSxcjuMgT3NUDTw etrX0d2AXALstleYTEveSbZvXVdfhwtPPb/dJshTv7hGALx+yQvjjAwhxO1SnSBB bGZZBE/ukX2h4bKYpSSgcaWuK7mCSfyKtfjNqGMVQyYWf0uv98cEErRCIN+azYdC W2+/eLJp2/vG1GEYJ5tmWXQYOYgcxbNZ6UH8ulIFgUnlhbP1y05a+0nYpuW1pTkb m9tny/IhHkyyCtT/qGu8Yxr0ayfUpXlkGm3TCDesZEen0a3dQCKR5101I0qqlpOA LqYv4FGBDJAsYF+0C27m69BS4j0DoEW3Yx76Zd22KcnlqM9HKUf5kmB8/aebJnaA olfHYA== Received: from [91.201.188.19] (h0-019.eksi.net [91.201.188.19]) by c4.eksi.net (OpenSMTPD) with ESMTPS id fb18462d TLS version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NO; Sat, 18 Jul 2020 15:56:26 +0300 (EEST) Reply-To: abb@abbon.net To: "freebsd-net@freebsd.org" From: Alexandr Baryshnyev Subject: How to increase the size of the MAC address caching table? Message-ID: Date: Sat, 18 Jul 2020 15:56:25 +0300 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: ru Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 4B87KZ5mBfz4HFm X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=abbon.net header.s=default header.b=U33khA2R; dmarc=pass (policy=none) header.from=abbon.net; spf=pass (mx1.freebsd.org: domain of abb@abbon.net designates 194.44.253.2 as permitted sender) smtp.mailfrom=abb@abbon.net X-Spamd-Result: default: False [-2.15 / 15.00]; HAS_REPLYTO(0.00)[abb@abbon.net]; ARC_NA(0.00)[]; R_DKIM_ALLOW(-0.20)[abbon.net:s=default]; NEURAL_HAM_MEDIUM(-1.04)[-1.035]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; R_SPF_ALLOW(-0.20)[+ip4:194.44.253.2]; MIME_GOOD(-0.10)[text/plain]; REPLYTO_ADDR_EQ_FROM(0.00)[]; NEURAL_HAM_LONG(-0.99)[-0.986]; RCPT_COUNT_ONE(0.00)[1]; RCVD_COUNT_THREE(0.00)[3]; DKIM_TRACE(0.00)[abbon.net:+]; DMARC_POLICY_ALLOW(-0.50)[abbon.net,none]; NEURAL_HAM_SHORT(-0.13)[-0.131]; TO_DN_EQ_ADDR_ALL(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; SUBJECT_ENDS_QUESTION(1.00)[]; ASN(0.00)[asn:3255, ipnet:194.44.253.0/24, country:UA]; RCVD_TLS_LAST(0.00)[]; MID_RHS_MATCH_FROM(0.00)[] X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 18 Jul 2020 12:56:36 -0000 Hello everybody. I have about 1,500 devices on the network, but in fact the MAC address table on the central router running Freebsd 12.0 never contains more than 1000 with small cached records. In the network, there are short-term random interruptions between different hosts and the router. The connection to the Internet on different computers in the network is lost for a short time. No apparent cause of these breaks was found. There is a suspicion that the MAC address table on the FreeBSD router has a limited size, about 1000 with a small record maximum. Is that so? Is it possible to increase the size of this table if it is limited? An internet search was not successful. Help me, please. > arp -an | grep -ve incomplete | wc -l 1055 Thank you. -- Best regards, Alexandr B. Baryshnyev, e-mail: abb@abbon.net