Date: Mon, 03 Jun 2019 12:49:29 -0500 From: Larry Rosenman <ler@lerctr.org> To: Eugene Grosbein <eugen@grosbein.net> Cc: Freebsd net <freebsd-net@freebsd.org>, owner-freebsd-net@freebsd.org Subject: Re: SNMP/No Bufferspace Message-ID: <8dba5eaea800356d279eb81d7d8b2a30@lerctr.org> In-Reply-To: <f2cdca32-2df1-7ad0-b5c1-cf3bc4905fa9@grosbein.net> References: <fde5e5f1b69c85fd5c7a7ab12e3d7167@lerctr.org> <f2cdca32-2df1-7ad0-b5c1-cf3bc4905fa9@grosbein.net>
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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<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384 options=680003<RXCSUM,TXCSUM,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6> inet6 ::1 prefixlen 128 inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1 inet 127.0.0.1 netmask 0xff000000 groups: lo nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL> bce0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=c01bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,VLAN_HWTSO,LINKSTATE> ether a4:ba:db:29:66:95 media: Ethernet autoselect (1000baseT <full-duplex>) status: active nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> bce1: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=c01bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,VLAN_HWTSO,LINKSTATE> ether a4:ba:db:29:66:97 media: Ethernet autoselect nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> bce2: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=c01bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,VLAN_HWTSO,LINKSTATE> ether a4:ba:db:29:66:99 media: Ethernet autoselect nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> bce3: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=c01bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,VLAN_HWTSO,LINKSTATE> ether a4:ba:db:29:66:9b media: Ethernet autoselect nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> bridge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> 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<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP> ifmaxaddr 0 port 2 priority 128 path cost 55 groups: bridge nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL> ⌂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
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