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New Member

Cisco 877 IP and Subnet

Hi guys,

I am preatty new to the Cisco world and as such I am aiming for the CCNA certification. I got the ciscopress CCENT/CCNA ICND1 and ICND2 books and I am loving it.

Now to the question. I have a Cisco 877 router provided to me by Bell Canada. I don't have the EXEC password so I am really limited to what I can do with the router. Now, when i got the router, it came with a letter stating all the static IP's that I have with the sunbet mask and so on. Here is a copy:

BID Service & Subscribed Bandwidth     Adsl extra 6 meg

ADSL, SPID or CKT Number

Installation Address

IP Addresses up to including70.25.250.23

address assigned to the network

address assigned to the router/gateway

Usable IP addresses to

address assigned to the broadcast

Subnet mask     255.255.255. 248

Primary DNS

Secondary DNS

Router Type     Cisco 877

Now from what you can see is a clas A network and the Subnet is Class C. I spoke to a Bell Canada technician and he assured me that everything is OK. So my question is, is it possible to have Class A network with a Class C Subnet or is it a mistake.

Any help to a newbie is appreciated.


  • WAN Routing and Switching

Cisco 877 IP and Subnet

This is pretty normal. All they are doing is subdividing their class a down a bit its all still a class A network (first octet).

it varilable length subnet masking. It will be a very important topic in your studies.

New Member

Re: Cisco 877 IP and Subnet


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