Mac Address cleared to fast but aging time set to 86400
We have a Cisco Core switch 6500 and leafs 2960 (ios 15.0(2)SE6).
The network is segmented, one vlan for each floor of the building, the STP is in mode rapid-pvst.
YY - workstation VLAN
XX - servers VLAN
We are configuring wake on lan across vlans, and some tests were successful. But after the workstation stay off for a while we can't power it on again, using wol. Troubleshooting this issue, we found out that 2960 is clearing the mac address-table in seconds after workstation is turned off.
The mac address-table aging-time is set for 24h, on 6500 it is set only for vlan YY, on 2960 it is set global.
In 6500 the mac address-table still filled:
vlan mac address type learn age ports
YY 2c41.3894.4f95 dynamic Yes 10800 Ten/n
SW_6509#show mac address-table aging-time Vlan Aging Time ---- ---------- Global 300 YY 86400
SW_2960#show mac address-table aging-time Global Aging Time: 86400 Vlan Aging Time ---- ----------
We can't identify any topology change at the vlan where workstation is running:
SW_2960#show spanning-tree vlan YY detail VLANYY is executing the rstp compatible Spanning Tree protocol Number of topology changes 59 last change occurred 2w5d ago from StackPort2
What more can be clearing the mac address-table on Cisco 2960?
Down here is the configuration made for WoL:
WoL server is 10.8.XX.40
DHCP server is 10.8.XX.20
access-list 104 permit udp host 10.8.XX.40 any eq 7
ip forward-protocol udp 7
mac address-table aging-time 86400 vlan YY
interface VlanXX description #### VLAN Servers #### ip address 10.8.XX.253 255.255.255.0 ip helper-address 10.8.XX.255 ip directed-broadcast 104 no ip proxy-arp standby 1 ip 10.8.XX.1 standby 1 priority 110 standby 1 preempt standby 1 track 1 decrement 20 end
interface VlanYY description #### VLAN floor 2 #### ip address 10.8.YY.253 255.255.255.0 ip helper-address 10.8.XX.20 ip directed-broadcast 104 no ip proxy-arp standby 30 ip 10.8.YY.1 standby 30 priority 110 standby 30 preempt standby 30 track 1 decrement 20 end
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