Home lab scenario

mella060mella060 Member Posts: 196
Hi, just wondering how this would work.

I have a cisco 871 which ive been using for my home ADSL. I have a 3550 which id like to add to the network and have pcs connect to the switch instead. What i have done is create a routed port on the 3550 which then connects to the 871, which then connects to the modem/internet. On the 3550 ive created a SVI for vlan 11 and then connected a PC with an IP of say 192.168.11.10 to a port in vlan11.

Would it be ok then to run a default route on the 3550 pointing to the vlan 1 interface on the 871 ?

The thing is the 871 has one layer 3 port which connects off to the net and then 4 integrated switchports. How will it work with connecting one of these switchports to the routed port on the 3550 ?

I ran ospf on the 871 and 3550 and it seemed to pick up the neighbours fine.

So the 871 is being used for NAT and the 3550 for inter-vlan routing.

Any ideas ?

Thanks

Comments

  • mzinzmzinz Member Posts: 328
    mella060 wrote: »
    Hi, just wondering how this would work.

    I have a cisco 871 which ive been using for my home ADSL. I have a 3550 which id like to add to the network and have pcs connect to the switch instead. What i have done is create a routed port on the 3550 which then connects to the 871, which then connects to the modem/internet. On the 3550 ive created a SVI for vlan 11 and then connected a PC with an IP of say 192.168.11.10 to a port in vlan11.

    Would it be ok then to run a default route on the 3550 pointing to the vlan 1 interface on the 871 ?

    The thing is the 871 has one layer 3 port which connects off to the net and then 4 integrated switchports. How will it work with connecting one of these switchports to the routed port on the 3550 ?

    I ran ospf on the 871 and 3550 and it seemed to pick up the neighbours fine.

    So the 871 is being used for NAT and the 3550 for inter-vlan routing.

    Any ideas ?

    Thanks

    This will work fine, very common.

    Can you put an IP on the 871 VLAN? Make sure its in the same subnet as the routed ported on the 3550.
    _______LAB________
    2x 2950
    2x 3550
    2x 2650XM
    2x 3640
    1x 2801
  • jason_lundejason_lunde Member Posts: 567
    You could even create the SVI's on the 871, and have those 4 switchports trunking or etherchanneled to the 3550. Theres a few different ways you could do it, just depends on you, and whether or not you want that 3550 acting as a layer 3 device.
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