Answering early to increase the chance of humiliation if I make mistakes....
In this case, the 1st and 4th octets are not subnets of all zero's/all one's, because you are using a Class A address. Your 4 little 26 bit subnets are right in the middle(ish) of a very large Class A network (10.0.0.0 - 10.255.255.255). The illegal subnets if using 26 bit subnets throughout would be 10.0.0.0/26 and 10.255.255.192/26. No you can't use 10.60.0.63 as a host address because it is the broadcast address. Interesting to see exactly what happened if you did (I would imagine chaos). I would think that the only situation that a broadcast address can be used is using a 31 bit mask. I know that this can be done (One device uses the network address and one uses the broadcast), but I don't know whether that is just for serial connections or whether this can be used on an ethernet with just two devices. Open to correction from all-comers as usual, and especially open to comments on the 31 bit mask thing. Regards, Gareth ""Tribavan Raina"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Hi.. > > I was going through some subnetting scenarios and came across this stuf > which is confusing for me.We have been given a network range of > > 10.60.0.0/24. > We have 3 routers which are connected back to back and they all have 3 > ethernet ports for 3 ethernet networks.Each subnet will have max. hosts 60 > and we also need to design IP addressing for serial links with max.2 IP > addresses to conserve IP addresses. > In the solution it says, > For > 60 hosts we need minimum 6 bits ,2^6-2=62 hosts per subnet. > By subnetting 10.60.0.0/24 > we get 4 subnets with 26 bit mask. > 10.60.0.0/26 > 10.60.0.64/26 > 10.60.0.128/26 > 10.60.0.192/26 > NOw my question is that can we use 1st and 4th subnet as the rule says that > u cant use subnet with all 0's and all 1's. > Same way for the network > 10.60.0.0/26 the first host would be > 10.60.0.1/26 and the broadcast address would be > 10.60.0.63/26 > Can I use 10.60.0.63 as an IP address ,and If not what will happen if I ping > this broadcast address. > I tried this on Win2k and it allows me to use broadcast ip for a network > interface > .What is the effect of using broadcast IP as a IP address on a network card? > > Thanks in advance > > > Tribavan Raina Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=24723&t=24712 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
