04-17-2012 05:40 AM - edited 03-04-2019 04:02 PM
Any ideas? After clearing arp, it wents ok, but how to solve this without clearing manualy? interface Vlan2 ip address 10.101.1.1 255.255.255.0 arp timeout 180 endDSA#show mac address-table aging-time vlan 2
Global Aging Time: 300
Vlan Aging Time
---- ----------
2 300
DSA#sh arp | inc 10.101.1.205 Internet 10.101.1.205 3 0017.9a7a.9539 ARPA Vlan2 DSA#sh mac address-table address 0017.9a7a.9539 Mac Address Table ------------------------------------------- Vlan Mac Address Type Ports ---- ----------- -------- -----
04-18-2012 05:07 AM
Hi,
you can bring the ARP timeout and the forwarding table-aging time close to each other.
Fabio
04-18-2012 05:12 AM
Hey,
tried everything in this case. Everyhing wents OK after removing switchport block unicast from that interface, which has the mac. Maybe the switchport block unicast should be applied on access instead of trunk?
Donatas.
04-18-2012 05:24 AM
Hi,
Are you sure that your network doesn't suffer of Asymmetric routing?
Recently, I have written a tutorial about this problem:
http://www.ciscozine.com/2012/04/15/unicast-flooding-due-to-asymmetric-routing/
Fabio
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