Can ping outside network from switch but not from pc connected to It.
I've connected a dslmodem/router to a fast ethernet port(fa0/1) on a 2620 router.There is a 2950 switch connected to the other port (fa0/0).I can ping the Internet via the router but and the switch but not from a host connected to the switch.I can't reach the dslmodem from the host pc.I've configured nat(overload) on the router but I'm sure I've done something wrong.
Re: Can ping outside network from switch but not from pc connect
Hi.I changed the acces-list from 0.50 to 0.255 and It works!
Why wouldn't It work with the 0.50 ? It was working for the switch with the original .50 setting.The switch ends In .2 and the pc In .7.Both were within the parameters.What am I missing ?????
I haven't covered access lists yet.I assumed 192.168.9.0 0.0.0.50 means all the addresses between 0 to 50.From what I'm reading now thats totally wrong.It's to do with inverse subnet masks.Thanks for the help.
Can ping outside network from switch but not from pc connected t
well yes...on routers, ACL use WildCard Mask not the subnet mask and no this statement of yours is not correct "I assumed 192.168.9.0 0.0.0.50 means all the addresses between 0 to 50" its not that easy
Wildcard mask is the opposite of Subnet mask i.e in binary format simply replace all 0's with 1 and vice versa. An easier way that I use to calculate wildcard mask is Subtrack each value in every octet from 255 and you will have the correct wildcard mask. Eg: 255.255.255.0 = 0.0.0.255 in wildcard, similarly 255.255.240.0 = 0.0.15.255 in wildcard mask
Do go through the ACL section as this is the basic rule that needs to be followed in any ACL on routers and Switches.
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