At 03:54 PM 8/12/2004 +0800, Chris Lee wrote:
Dear Ray,
Thanks for your reply.
Here is the existing setup
Internet --> NetDSL Cable Modem --> CISCO Router --> Intranet
What I want is:
Internet --> NetDSL Cable Modem --> leaf --> Intranet
There is two port (DSL, Ethernet) for ARESCOM NetDSL 1000 Cable Modem, which I think work like this: ISP --> DSL port --> NetDSL --> Ethernet --> CISCO 1605 Ethernet port 1
For CISCO, it only use two port, Ethernet Port 1 (From NetDSL) and Ethernet Port 0 to Internat Hub.
OK. This is good. You are not using any of the more esoteric interface possibilities available with the 1600 series (ISDN, DS1), so the concerns raised in yesterday's messages are irrelevant to your actual needs. At the physical interface level, the router exchange should be a straight swap.
As I don't know how to config CISCO, I use Getif to peek the config via SNMP.
Is SNMP important to your requirements? I believe LEAF *can* provide SNMP (I know Linux can, but I don't recall if the required stuff has been packaged for, for example, Beting-uClibc). But SNMP is not a particular strength of Linux or LEAF.
For Interface, it show:
descr. ip address Ethernet0 10.0.108.254/255.255.255.0 203.198.77.78/255.255.240
Ethernet1 172.23.76.154/255.255.255.252
Tunnel5 192.168.79.94/255.255.255.252
I think Ethernet1 is the WAN IP address?? And don't know what is Tunnel5?
From examination of your routing table below, I'd infer that
A. Your LAN uses two address ranges:
10.0.108.0/24 -- a private range that needs to be NAT'd
203.198.77.78/27 -- a public range that can be routed
directly (without NAT)B. Your physical external network is 172.23.76.152/30. I suspect that this communicates with the DSL modem, which probably has IP address 172.23.76.153. It in turn routes to the external private address range 172.16.0.0/20, whcih you ISP probably uses for some internal purposes.
C. Your "true" external connection (the one with your default gateway) is the Tunnel1 interface. From its name, I'd guess it is some sort of VPN. There are many "standards" for VPNs, and there is no way to know if you can use LEAF, or even Linux in any form, with yours until you find out what sort of VPN this is. You find this out from your ISP. Also note that this "true" external connection is a private-range address. Your ISP is doing something special with this ... either upstream NAT'ing, though your use of a real /28 internal network makes this unlikely, or some non-standard routing ... to let it connect to the Internet. Before you switch routers, you simply must get your ISP to explain what it is doing here.
For Address: int. address/mask 1 10.0.108.254/255.255.255.0 5 172.23.76.154/255.255.255.252 4 192.168.79.94/255.255.255.252 1 203.198.77.78/255.255.255.240
* Don't know what int. column stand for?
For Routing Table: int. dest. next hop mask type proto age 4 0.0.0.0 192.168.79.94 0.0.0.0 direct local 0 1 10.0.108.0 203.198.77.78 255.255.255.0 direct local 0 0 172.16.0.0 172.23.76.153 255.240.0.0 indirect local 10 0 172.22.254.49 172.23.76.153 255.255.255.255 indirect local 11 2 172.23.76.152 172.23.76.154 255.255.255.252 direct local 0 4 192.168.79.92 192.168.79.94 255.255.255.252 direct local 0 1 203.198.77.64 203.198.77.78 255.255.255.240 direct local 0
First I want leaf to peform normat NAT router for range of internet ip address
No problem. This is one of the main things stock LEAF, any variant, does,
Then, I want to setup SNMP to collect networking perform per ip
As I said above, SNMP support is not s strength of Linux. It can be done, and probably some LEAF variants support SNMP. But "collect networking perform per ip" is a wee bit vague as to details, so I can't say how easy it would be to do what you actually want (or to replicate whatever the Cisco is now doing for you).
Finally, setup QOS for each ip.
Some LEAF variants support this in some fashions. Again, you'll want to be a bit more specific about what you hope to accomplish (or what you're doing now, if the Cisco does this) to get good feedback.
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