I need to add some Ethernet ports to a 3640, for new connections to a WAN provider. In looking at these two modules, it would seem either one could work, but the switch card is about half the cost. Why would 16 ports cost less than 4? Are there some constraints on the switch card that would prevent routing between different networks on individual Ethernet ports? For example, I just need to route from network 10.0.0.0/16 on port 1 to network 10.1.0.0/16 on port 2.
I agree, it does seem strange that 4 x 10Mb ports are more expensive than 16 x 10/100Mb ports. Here is a link to the 'cheaper' NM-16ESW, you can view all the supported features to ensure it does all you want:
The way I understand it is that the NM-16ESW does not privide routability between the ports on that module. In other words they will always be a part of the same network so in effect you are adding a layer 2 switch capability to your router on one logical port (16 physical ports). That to me explains the cost difference. Since the 16 ports are not routable, between each other that is, there is a limitation.
I've never used the module so I cannot be sure but that seems to be the case from what I've read.
Thanks everyone. If I followed this correctly, in order to route between ports on the switch, the ports would need to be in separate VLANs. So for instance if I put port 1 in VLAN 1 and port 2 in VLAN 2, the 3640 could route between VLAN 1 and VLAN 2. Compared to the NM-4E, it's some extra configuration steps to set up the single-port VLANs.
I'm not familiar with SVI yet, will take a look. Would a configuration like this introduce any performance hits? Are there issues with things like routing protocol support?
Question We run asr9001 with XR 6.1.3, and we have a very long delay to
login w/ SSH 1 or 2 to the device compare to IOS device. After
investigation, the there is 1s delay between the client KEXDH_INIT and
the server (XR) KEXDH_REPLY. After debug ssh serv...
Introduction The purpose of this document is to demonstrate the Open
Shortest Path First (OSPF) behavior when the V-bit (Virtual-link bit) is
present in a non-backbone area. The V-bit is signaled in Type-1 LSA only
if the router is the endpoint of one or ...
Hi, I am seeing quite a few issues with patch install and wanted to
share my experience and workaround to this. Login to admin via CLI, then
access root with the “shell” command Issue “df –h” and you’ll probably
see the following directory full or nearly ...