I'm pretty sure I'm missing something blatantly obvious here but please indulge me.
I have a switch which used to be in a vlan and had no problem connecting to other devices in the same vlan.
During an upgrade and because the I wanted only L3 routed links on the switch, I took the device out of the vlan and connected a routed interface to one of the devices in the vlan as it is imperative that these two devices talk.
Lets say the device in question is 10.25.10.200 (which is the same address it had when it was a member of vlan 50), it is directly connected to another switch which 10.25.10.50.
Both these addresses are part of vlan 50 but the addresses are now on routed ports on the switches - no Vlans.
Nothing in vlan 50 can talk to these devices and vice-versa.
I would want to just assign these two devices /30 addresses but I am definitely unable to change the address of 10.25.10.50.
What changes may I make to enable the devices in vlan 50 access these two devices, even the default gateway of vlan 50 (10.25.10.250) can't get to the devices so what hope for the others?....
I can't subnet down the IP address allocation for vlan 50 either as it is pretty much all used up.
Any ideas would be much appreciated. Is there a command that would help route the traffic? proxy-arp somewhere perhaps? I'm a bit lost here so I hope its a quick fix.
just a little addition:
I've realized you had asked for more details of the static NAT approach.
I've provided you a possible procedure to change the ip subnet on the point-to-point link.
The reasons are the following:
the NAT approach is feasible only if SW1 is a C6500 all other multilayer platforms don't support NAT.
From the fact that you reach SW2 from Sw1 I've seen enough space to propose a definitive correction as described in my second post in this thread.
if SW1 is a C6500 that is NAT capable and you don't feel confident with the suggested procedure (I've provided an example of using scheduled reload to be able to recover as we do with remote sites changes).
int type x1/y1
ip nat inside
int other x1/y1
ip nat outside
ip nat inside source static 10.25.10.50 10.x.y.2
ip nat inside source static 10.25.10.50 10.x.y.3
int loop M
ip address 10.x.y.1 255.255.255.248
advertise this in your intranet in your IGP
Hope to help