09-24-2007 10:53 PM - edited 03-05-2019 06:40 PM
hi all.
i have the following scenario and i want to see if it doable or not..
i have an 2600 router with two fastethernet interfaces.
the Scenario:
1- i want to connect Fast0/0 to the isp.
2- i want to connect Fast0/1 to a network with two vlans, so i want to implement two subinterfaces on it fast0/1.1 and fast0/1.50 with dot1q protocol, and each subinterface is the gatway for 1 of the vlans.
will this scenario work and both of the vlans can gain access to the internet ??
09-24-2007 11:10 PM
Yes, this will work provided you have the IP-plus feature set. I'm not sure whether the IP base feature set supports dot1q. Try the encapsulation command - if it accepts it, then you can do it.
I suppose you are using NAT towards the ISP rather than global Internet addresses. In that case, you will need to set ip nat outside on your F0/0, and ip nat inside on each of your F0/1 subinterfaces, and then the NAT translation commands in the normal way.
Kevin Dorrell
Luxembourg
09-24-2007 11:46 PM
Thank Kevin..
Unfortunately the router i have does not support ip plus.. so immediatly i searched cisco to upgrade the ios and i found a lot of versions that can do the work.
the problem now is that i need to upgrade the hrdware too, i am not really sure.
for exampl one of the images i found is
c2600-is-mz.123-3c.bin (64/32)
and all the images have the number (64/32)
but the show version command on my router shows the following
cisco 2611XM (MPC860P) processor (revision 0x100) with 27648K/5120K bytes of mem
ory.
so i think i have a memory problem.. am i right ????
09-25-2007 12:01 AM
It would seem that you need to upgrade the memory.
But before you do so, just check that your existing software does not support dot1q. What version is it?
interface F0/1.50
encapsulation ?
Kevin Dorrell
Luxembourg
09-25-2007 12:10 AM
i checked that befor, and no it does not.
thanks for the hint.
09-25-2007 12:27 AM
I have a new thought..
as i told you befor the sho version command shows:
cisco 2611XM (MPC860P) processor (revision 0x100) with 27648K/5120K bytes of memory.
but in other lines in shows:
32K bytes of non-volatile configuration memory.
16384K bytes of processor board System flash (Read/Write)
so i think that my router is (32/16). what do you think ???
09-25-2007 12:41 AM
No, I'm afraid the 32 refers to Megs of DRAM, not to the NVRAM. You seem to have enough flash though.
Kevin Dorrell
Luxembourg.
09-25-2007 01:07 AM
Returning to the main subject, i want to say i am not using NAT, and the Servers connected to the gatway have public IPs, i just need to seperate the servers into 2 vlans. So there is no NAT.
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