02-11-2017 03:53 AM
We currently have a SX800 where we have 2 vlans (VLAN2 and 101) each has an IP address assigned to the VLANs. We use the IP address as a default gateway and the SX does the ourting between the VLANs for us.
Can I do the same on our VDX6740? I assume I just assign an IP address to each of the VLANs and it will automatically route between the 2 VLANs?
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02-12-2017 11:51 PM
The same applies to the VDX, yes.
06-15-2017 12:21 AM
We are building a VCS with 3 switches. Each has their own IP address.
Now if one of those units goes down and the clients are using the IP address for its gateway, how will this work when the unit fails?
Will the IP address be taken over by the other units?
06-15-2017 03:33 AM
I found something called Fabric Virtual Gateway.
However I have setup VLAN 2 with a fabric virtual gateway IP and VLAN 101 with a fabric virtual gateway IP. I've put 1 port on the switch in VLAN 2 and one port into VLAN 101. I then plugged a device into each and configured them with an IP address in the subnet and the gateway as the IP I set but they can't see each other. They can ping both gateways but not each other (no firewalls on the devices).
06-20-2017 12:37 AM
There are a few ways to achieve L3 redundancy and Virtual Fabric Gateway is one of them indeed. There is also VRRP and VRRPE that would offer the same.
We'll focus on Virtual Fabric Gateway since you opted for it already.
Could you share the config of the fabric to take a closer look? Could also provide the output of the following commands?
1) show vcs
2) show version
3) show ip fabric-virtual-gateway detail
4) show ip fabric-virtual-gateway interface ve 2
5) show ip fabric-virtual-gateway interface ve 101.
06-20-2017 12:23 PM
06-20-2017 12:24 PM
06-20-2017 11:37 PM
Glad you got this to work and hopefully you won't have more issues with it.
Regarding the 2nd VDX not pinging hosts, I believe this is to do with whether the switch is Master FVG or not. Could you check and confirm which switch is the Master, aka ARP responder, using "show ip fabric-virtual-gateway"?
Should Switch one , where hosts are connected to, be the Master, try disabling the Ve interface on it and see what happens when switch 2 takes over. You can achieve that by:
1. Enter the rbridge-id command in global configuration mode.
device(config)# rbridge-id 1
2. Enter the interface ve command.
device(config-rbridge-id-1)# interface ve 2
3. Enter the ip fabric-virtual-gateway command to enable the IPv4 Fabric-Virtual-Gateway
device(config-rbridge-Ve-2)# ip fabric-virtual-gateway
4. Enter the disable command to disable the Fabric-Virtual-Gateway configuration for a
particular RBridge ID.