Re: understanding Routing Cisco vs. Linux
> what exactly is that you are trying to do...
I am trying to reduce latency, reduce peer to peer bandwidth
hogs, and do some stateful firewalling while I am at it.
I want to drop in one Debian Linux box running the 2.4.19 Kernel
between the router and the switch. The Linux box has 2 interfaces.
It will be routing and inspecting packets.
I understand the first thing I need to do is get packets to route.
This is the hard part for me. I have used IP-tables with one
network and nat, but I have never routed multiple networks.
We have 6 T-1 with 16 class C networks coming into a Cisco 7200 VXR.
The router is managed by Fast-net, our upstream provider.
They were kind enough to give the router config file. ;-)
Here is the part I am need to worry about.
ip classless
ip route 192.146.226.0 255.255.255.0 FastEthernet0/0
ip route 209.243.33.0 255.255.255.0 FastEthernet0/0
ip route 209.243.34.0 255.255.255.0 FastEthernet0/0
ip route 209.243.35.0 255.255.255.0 FastEthernet0/0
ip route 209.243.36.0 255.255.255.0 FastEthernet0/0
ip route 209.243.37.0 255.255.255.0 FastEthernet0/0
ip route 209.243.38.0 255.255.255.0 FastEthernet0/0
ip route 209.243.39.0 255.255.255.0 FastEthernet0/0
ip route 209.243.40.0 255.255.255.0 FastEthernet0/0
ip route 209.243.41.0 255.255.255.0 FastEthernet0/0
ip route 209.243.42.0 255.255.255.0 FastEthernet0/0
ip route 209.243.43.0 255.255.255.0 FastEthernet0/0
ip route 209.243.44.0 255.255.255.0 FastEthernet0/0
ip route 209.243.45.0 255.255.255.0 FastEthernet0/0
ip route 209.243.46.0 255.255.255.0 FastEthernet0/0
ip route 209.243.47.0 255.255.255.0 FastEthernet0/0
We manage the Catalyst 5500 switch.
I am not sure how the Linux box functioning as a Router/firewall/shaper will
fit in the network.
Should I ask Fast-net to reconfigure their router so that their router
passes all packets to the new Linux router ?
Or, do I need simply to connect 2 cross over cables and drop in the
Linux router and reconfigure the switch to point to the new router ?
Things I am looking at:
http://linux.oreillynet.com/pub/a/linux/2000/08/24/LinuxAdmin.html
http://www.linuxpowered.com/archive/howto/Adv-Routing-HOWTO-12.html
http://www.tldp.org/HOWTO/Adv-Routing-HOWTO/lartc.cookbook.ultimate-tc.html
Don't think I will be making it a bridge
http://mailman.ds9a.nl/pipermail/lartc/2001q3/001424.html
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