From owner-freebsd-net@freebsd.org Mon Jun 3 17:49:33 2019 Return-Path: Delivered-To: freebsd-net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 3A07315B8C63; Mon, 3 Jun 2019 17:49:33 +0000 (UTC) (envelope-from ler@lerctr.org) Received: from thebighonker.lerctr.org (ns-b.lerctr.org [IPv6:2001:470:1f0f:3ad::53:2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "*.lerctr.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 33DFE8D60D; Mon, 3 Jun 2019 17:49:32 +0000 (UTC) (envelope-from ler@lerctr.org) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lerctr.org; s=ler2019; h=Message-ID:References:In-Reply-To:Subject:Cc:To:From:Date: Content-Transfer-Encoding:Content-Type:MIME-Version:Sender:Reply-To: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=Yktp0o0reZQ0195SJguV9obx1uX3soHi1L3lMrlJsAU=; b=WMJwlWrv2y//NvbXc1F8/1C8xk tJQiO9ynG/xUf3pf+z1x4chN7WV3IhpWLl6INjhuJ3Rx4Nh0xS3S6PpTNrcgVDfUD4O9eBMCp9YSS 9PWcfjnQPWvkV9QJpmqWooN9peVY38KLjLgyE9Logn+0C/RplZNMfJziH8GZp4BSqzyPfHBgU1wc/ /PE90lCl/aZBwKfXiTMVPpLPskHjG2Ln1BcvWZltLDQpORDX2ScS98n+I0UT7WUIqUD8YKuECBm9H K9Bg3up506kL0Pfe4aEh/oLRdytTam/aFJ/EP9hiyiDt/x2NeV9Th3DO03jU8Sv1o4WpHupkEMaw3 SOI5s4yA==; Received: from thebighonker.lerctr.org ([2001:470:1f0f:3ad:bb:dcff:fe50:d900]:28373 helo=webmail.lerctr.org) by thebighonker.lerctr.org with esmtpsa (TLSv1.3:TLS_AES_256_GCM_SHA384:256) (Exim 4.92 (FreeBSD)) (envelope-from ) id 1hXr5N-000Kik-Ai; Mon, 03 Jun 2019 12:49:29 -0500 Received: from 2600:1700:210:b180:c89b:801e:ddd7:a6bb by webmail.lerctr.org with HTTP (HTTP/1.1 POST); Mon, 03 Jun 2019 12:49:29 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Date: Mon, 03 Jun 2019 12:49:29 -0500 From: Larry Rosenman To: Eugene Grosbein Cc: Freebsd net , owner-freebsd-net@freebsd.org Subject: Re: SNMP/No Bufferspace In-Reply-To: References: Message-ID: <8dba5eaea800356d279eb81d7d8b2a30@lerctr.org> X-Sender: ler@lerctr.org User-Agent: Roundcube Webmail/1.3.9 X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 03 Jun 2019 17:49:33 -0000 On 06/03/2019 12:23 pm, Eugene Grosbein wrote: > 03.06.2019 22:56, Larry Rosenman wrote: > >> I have a mrtg job that runs every 5 minutes on a FreeBSD-CURRENT box >> and gets this randomly: >> >> SNMP Error: >> send_query: No buffer space available > > [skip] > >> How can I debug this? > > Your outgoing network interface stalls for some reason. > Where is this traffic directed to? Some kind of VPN tunnel? Physical > NIC that looses link? > Some Wifi or mobile network? > physical NIC on the same physical network (all Ubiquiti gear). ⌂66% [ler@borg.lerctr.org:~] $ ifconfig lo0: flags=8049 metric 0 mtu 16384 options=680003 inet6 ::1 prefixlen 128 inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1 inet 127.0.0.1 netmask 0xff000000 groups: lo nd6 options=21 bce0: flags=8943 metric 0 mtu 1500 options=c01bb ether a4:ba:db:29:66:95 media: Ethernet autoselect (1000baseT ) status: active nd6 options=29 bce1: flags=8802 metric 0 mtu 1500 options=c01bb ether a4:ba:db:29:66:97 media: Ethernet autoselect nd6 options=29 bce2: flags=8802 metric 0 mtu 1500 options=c01bb ether a4:ba:db:29:66:99 media: Ethernet autoselect nd6 options=29 bce3: flags=8802 metric 0 mtu 1500 options=c01bb ether a4:ba:db:29:66:9b media: Ethernet autoselect nd6 options=29 bridge0: flags=8843 metric 0 mtu 1500 ether 02:d7:b8:51:f2:00 inet6 fe80::d7:b8ff:fe51:f200%bridge0 prefixlen 64 scopeid 0x6 inet6 2600:1700:210:b180:d7:b8ff:fe51:f200 prefixlen 64 autoconf inet 192.168.200.4 netmask 0xfffffc00 broadcast 192.168.203.255 id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15 maxage 20 holdcnt 6 proto rstp maxaddr 2000 timeout 1200 root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0 member: bce0 flags=143 ifmaxaddr 0 port 2 priority 128 path cost 55 groups: bridge nd6 options=23 ⌂68% [ler@borg.lerctr.org:~] $ bridge0 via bce0 to the "main-switch" . and all the AP's,switches, etc. -- Larry Rosenman http://www.lerctr.org/~ler Phone: +1 214-642-9640 E-Mail: ler@lerctr.org US Mail: 5708 Sabbia Dr, Round Rock, TX 78665-2106