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<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
	options=8280b<RXCSUM,TXCSUM,VLAN_MTU,WOL_UCAST,WOL_MAGIC,LINKSTATE>
	ether 00:0d:b9:20:41:55
	inet 172.16.16.100 netmask 0xfffffff8 broadcast 172.16.16.103
	nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
	media: Ethernet autoselect (100baseTX <full-duplex>)
	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.