We are having a problem with a network-setup:
The network-topology looks like this:
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| 1. Cisco 2960G |==||
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| 2. Cisco 2960S | ||
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| 3. Cisco 2960S |==||
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Rapid pvst+ is enabled on all 3 switches with the following command:
spanning-tree mode rapid-pvst
spanning-tree loopguard default
spanning-tree portfast default
spanning-tree extend system-id
spanning-tree vlan 1 priority 53248
On the ports connected to another switch the following commands are added:
interface GigabitEthernet1//0/?
switchport mode dynamic desirable
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The uplink-provider uses VRRP between the two core-routers. To enable gateways on the used subnets, the uplink-provider uses 2 ips on each subnet to get VRRP working.
With one uplink everything works normally, but when the second uplink is enabled, the servers get alot of IP-packets that have a destination-ip that is not used on that server.
When the link between Rank1 and Rank3 is disabled, the situation seems to worsen even more.
Does someone have any clue what the problem could be with this setup and what the solution could be?
With best regards.
