I need another fast ether int on my 2800 series router. I found the HWIC-4ESW on cisco's site. I notice that it says " Layer 2 Ethernet switches with Layer 3 routing capability. (Layer 3 routing is forwarded to the host, and is not actually performed at the switch.)."
I understand basically what this means, but does it at all mean that I will have issues placing an ip address on the interfaces as this is L3?
the HWIC-4ESW requires you to configure inter-VLAN routing on the 2800 router (the host). So, basically, you put the FastEthernet interface into a VLAN, and then you configure a VLAN interface on the router, similar to the following example:
switchport access vlan 10
ip address x.x.x.x y.y.y.y
You cannot directly put an IP address on the interfaces of the HWIC-4ESW, since these are layer 2 interfaces only. Does that make sense ?
the 4 faste interfaces/port on HWIC-4ESW are layer 2 ports meaning they are switchports you can enable routing by creating an SVI or interface vlan associated to the vlans assigned to those ports. I do not have the exact IOS version but there is an IOS version where the 4 switcports can also be a L3 interface much like an interface on 3550 or 3750 when you do a "no switchports" and assign an IP address that essetailly make that interface/potr a L3 interface. so, all in all I do not see any issue.
It looks as though the hwic only supports L3 by being assigned to a SVI. I have not done this, but I am assuming how this works is you create a vlan int on the router and then assign the port to a specific vlan. does this function exactly as having the ip directly on the int?
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