Is it possible to chain two contexts in one 6500 FWSM so that for example vlan60 is outside (x.y.36.98/29) for FW-one and vlan61 inside for FW-one (IP x.y.37.1/24) and vlan61 is also outside for FW-two(IP x.y.37.254/24). Vlan62 is inside(IP x.y.38.1/24) for FW-two. Outside = sec0, Inside = sec100.
I use no NAT. I have a PC in vlan61 with IP x.y.37.10 and it all works well when I only have FW-one configured. As soon as I go into context FW-two and starts to configure interface vlan61 FW-one stops working. The only way to get FW-one up-and-running again is to delete context FW-two.
For every address you want to surf on the internet you have to have a static on fw-one for it. This is obviously not the most practical setup because in effect if you want to be able to surf to any internet site out there you would have to have static translations for every site on the internet.
This is why cascading contexts to the internet is not a good thing to do.
If you need the cascading contexts one way to make it working is to insert a router (it can be a VRF on the MSFC) between the two context. You will then use two separate VLANs between the contexts instead of this problematic shared VLAN.
This has already been addresses in ASA software "Automatically Assigning MAC Addresses to Context Interfaces" but it still missing for the FWSM.
Has anybody infos about this last feature on FWSM ?
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