id,summary,reporter,owner,description,type,status,resolution,keywords,cc,location 913,Watertoren2 - interface vr1 flapping,rick,,"{{{ vr1: link state changed to DOWN vr1: link state changed to UP vr1: link state changed to DOWN vr1: link state changed to UP vr1: link state changed to DOWN vr1: link state changed to UP vr1: link state changed to DOWN vr1: link state changed to UP vr1: link state changed to DOWN vr1: link state changed to UP vr1: link state changed to DOWN vr1: link state changed to UP HybridWatertoren2# uptime 7:01AM up 8 days, 17:45, 1 user, load averages: 0.33, 0.14, 0.05 HybridWatertoren2# ifconfig vr1 vr1: flags=8843 metric 0 mtu 1500 options=8280b ether 00:0d:b9:20:41:55 inet 172.16.16.100 netmask 0xfffffff8 broadcast 172.16.16.103 nd6 options=29 media: Ethernet autoselect (100baseTX ) status: active HybridWatertoren2# tcpdump -i vr1 tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on vr1, link-type EN10MB (Ethernet), capture size 65535 bytes 07:01:25.232437 IP 172.16.16.99.2145 > dhcp-39-iface-sis1.hybridhuub.wleiden.net.9081: Flags [S], seq 2044327795, win 5840, options [mss 1460,sackOK,TS val 98957 ecr 0,nop,wscale 0], length 0 07:01:25.232579 IP 2unused-iface-vr1.hybridwatertoren2.wleiden.net > 172.16.16.99: ICMP host dhcp-39-iface-sis1.hybridhuub.wleiden.net unreachable, length 68 07:01:35.242518 IP 172.16.16.99.2146 > dhcp-39-iface-sis1.hybridhuub.wleiden.net.9081: Flags [S], seq 2050081601, win 5840, options [mss 1460,sackOK,TS val 99958 ecr 0,nop,wscale 0], length 0 07:01:35.242686 IP 2unused-iface-vr1.hybridwatertoren2.wleiden.net > 172.16.16.99: ICMP host dhcp-39-iface-sis1.hybridhuub.wleiden.net unreachable, length 68 07:01:45.252666 IP 172.16.16.99.2147 > dhcp-39-iface-sis1.hybridhuub.wleiden.net.9081: Flags [S], seq 2061124263, win 5840, options [mss 1460,sackOK,TS val 100959 ecr 0,nop,wscale 0], length 0 07:01:45.252835 IP 2unused-iface-vr1.hybridwatertoren2.wleiden.net > 172.16.16.99: ICMP host dhcp-39-iface-sis1.hybridhuub.wleiden.net unreachable, length 68 07:01:55.262813 IP 172.16.16.99.2148 > dhcp-39-iface-sis1.hybridhuub.wleiden.net.9081: Flags [S], seq 2067581385, win 5840, options [mss 1460,sackOK,TS val 101960 ecr 0,nop,wscale 0], length 0 07:01:55.262943 IP 2unused-iface-vr1.hybridwatertoren2.wleiden.net > 172.16.16.99: ICMP host dhcp-39-iface-sis1.hybridhuub.wleiden.net unreachable, length 68 07:02:05.273099 IP 172.16.16.99.2149 > dhcp-39-iface-sis1.hybridhuub.wleiden.net.9081: Flags [S], seq 2083047367, win 5840, options [mss 1460,sackOK,TS val 102961 ecr 0,nop,wscale 0], length 0 07:02:05.273263 IP 2unused-iface-vr1.hybridwatertoren2.wleiden.net > 172.16.16.99: ICMP host dhcp-39-iface-sis1.hybridhuub.wleiden.net unreachable, length 68 ^C 10 packets captured 10 packets received by filter 0 packets dropped by kernel HybridWatertoren2# tcpdump -ni vr1 tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on vr1, link-type EN10MB (Ethernet), capture size 65535 bytes 07:02:10.271255 ARP, Request who-has 172.16.16.100 tell 172.16.16.99, length 46 07:02:10.271296 ARP, Reply 172.16.16.100 is-at 00:0d:b9:20:41:55, length 46 07:02:15.283435 IP 172.16.16.99.2150 > 172.17.65.39.9081: Flags [S], seq 2084605437, win 5840, options [mss 1460,sackOK,TS val 103962 ecr 0,nop,wscale 0], length 0 07:02:15.283596 IP 172.16.16.100 > 172.16.16.99: ICMP host 172.17.65.39 unreachable, length 68 07:02:25.293232 IP 172.16.16.99.2151 > 172.17.65.39.9081: Flags [S], seq 2095193804, win 5840, options [mss 1460,sackOK,TS val 104963 ecr 0,nop,wscale 0], length 0 07:02:25.293363 IP 172.16.16.100 > 172.16.16.99: ICMP host 172.17.65.39 unreachable, length 68 ^C 6 packets captured 6 packets received by filter 0 packets dropped by kernel HybridWatertoren2# }}} Kom ook traffic tegen wat ik niet thuis kan brengen. Heeft wat meer aandacht nodig.",incident,new,,,,Westeinder