Creating An IP Addressing Scheme For Each Subnet?
Jan 30, 2012
I have been assigned to create a basic IP Addressing Scheme. The company has a single class B private address range of 172.16.11.0/16 and it needs to be divided into four subnets. They are all based on a single router.
Subnet A: 500 hosts
Subnet B: 200 hosts
Subnet C: 50 hosts
Subnet D: 20 hosts
How can I subnet them correctly and how would I make an addressing scheme for each subnet? (Host range, server, peripherals, gateway address? etc.)
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Sep 25, 2012
I am carving up an internet Class C for customer. This class C is used by 3 distinct QA, Corporate and Production firewalls. I want to carve up IP space so there is a /26 for each environment. The issue I have is the firewalls may need communication with each other via the public IP space. Currently I don’t have any L3 switches in between the firewalls and the edge internet router. So with subnetting, it would seem I need to push everything through the internet router for the intra-firewall communication.I would rather not push this traffic through the edge router, so I came up with an idea to allocate all firewall outside interface IP’s in the 4th (last remaining) /26. That way, I can allow firewalls to communicate over the primary interface IP’s, which will all be in the same subnet – without going through a routing “engine”/device.
For the actual environment subnets (NAT's on respective firewalls), I create a static route on the edge router pointing to each of the firewall’s primary IP’s for the respective environment routes (the first 3 - /26’s).This is still a beta design, but I have done this before on small scale when ISP gave me 2 subnets for example, assuming I was going to put a router in between the customer firewall and ISP. I would use the “routed subnet” on the ASA interface, and then pull the NAT’s from the other subnet. The ISP would have to add a static route directing the NAT subnet to the “routed subnet” correct IP - which would be the firewall outside interface primary IP.I recently found out that with ASA OS 8.4.3 and up, ASA will not proxy arp for IP’s not in its local interface subnet. This means the ISP/router will have to assign static ARP entries on the edge router. This can get messy after the first few NAT entries. So I am debating the design now. I think this kind of stuff going forward won’t be worthwhile with newer ASA 8.4.3 code.
How to communicate between different ASA’s, while still carving up the Class C into usable smaller subnets? The primary reason for doing this in the first place is to support routing on the edge router. I am thinking it might be time to ask for another Class C to do the routing functions, and keep the firewalls all at Layer 2 in one /24 - Class C?
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May 18, 2012
I'm doing something in class where I have to define a ip addressing scheme for multiple buildings in what im guessing is a campus lan. I understand how to subnet, but was never taught how to put it into practice. I'm having trouble grasping the creation of a network for: multiple buildings(4) with 3 levels/floors each, housing around 2000 students and 400 staff, all needing to access the network in each building.The main hall houses the data center on the first of 4 levels.
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Oct 18, 2012
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Dec 14, 2011
I have a cisco 2801 router, My ISP in which i receive my bandwidth from has assigned me a ip address/gateway etc for my FA0/0 from our Telco switch. I need to figure out how to bridge through the public ip scheme they are issuing me through FA0/1 (setting up a transparent bridge) so in example if i was givin 192.168.1.189 on a /30 network for my router (assigned to FA0/0) how to i set it up to bridge through the publics?
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Sep 30, 2012
I was wondering if an interface numbering scheme is available for the 6509-E switch equipped with SUP-2T and includes 16Port X 10GE DFC4, 48 x 1GE SFP and RJ 45 line cards. Would like to understand:
How the slots are addressed
Interface Addressing
On board SUP-2T 10G and 1G port addressing
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Oct 3, 2012
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Jan 17, 2013
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Jan 17, 2010
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Oct 31, 2011
can i use both class B and class C at the same time?If so, what should i do with class B? and with the other Class C?i got 500 computer into 5 segments
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Mar 4, 2012
I need to provide logical addressing this network using class C but I have been given no address to start with, only the network diagram:
[URL]
How do I even start this? How do I know which address to use?
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Jan 2, 2013
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May 8, 2011
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Jan 28, 2011
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Jan 17, 2012
Keep getting DHCP timeouts 169.254.x.x addressing. I think that the client laptop is not giving a response to the REQ from the DHCP server. Am I correct in my interpretation of the debug?
00:21:d7:93:f9:40 from Disassociated to Idle
*apfReceiveTask: Jan 18 13:48:24.162: 58:94:6b:d0:41:08 0.0.0.0 DHCP_REQD (7) Deleted mobile LWAPP rule on AP [00:21:d7:93:f9:40]
*apfReceiveTask: Jan 18 13:48:24.162: 58:94:6b:d0:41:08 Username entry deleted for mobile
*apfReceiveTask: Jan 18 13:48:24.162: 58:94:6b:d0:41:08 apfMs1xStateDec
*apfReceiveTask: Jan 18 13:48:24.162: 58:94:6b:d0:41:08 Deleting mobile on AP 00:21:d7:93:f9:40(0)
*DHCP Proxy DTL Recv Task: Jan 18 13:48:37.073: 58:94:6b:d0:41:08 DHCP received op BOOTREQUEST (1) (len 308,vlan 0, port 29, encap 0xec03)
*DHCP Proxy DTL Recv Task: Jan 18 13:48:37.073: 58:94:6b:d0:41:08 DHCP processing DHCP DISCOVER (1)
[code]....
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May 9, 2011
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Mar 15, 2011
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Aug 3, 2012
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Dec 6, 2011
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Feb 26, 2013
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Nov 2, 2011
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Jul 24, 2012
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May 20, 2011
I'm trying to set up a network for a friends small office so we can share files between each of the computers.i have tried to do it through the workgroup but with no luck as some can see the other machines and some cant?
Hardware/software:
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laptop with Windows 7
laptop with Windows Vista
laptop with Windows XP SP2
Mac
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Mar 11, 2012
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Dec 18, 2012
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Sep 20, 2012
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Can I keep the computers not visible to each other? We would both like to maintain our privacy ... and I don't know if we connect everything up this way if our computers will be open to each other. Is this called putting them on a separate network?
I saw something in the documentation in this manual [URL]. I think on page 20 it is telling me I can give one adapter a different name to put it on another network, but I am not sure. And I also see that it also says for there to be connectivity they need to have all the same name "HomePlugAV".
So, if the tv and the main adapter have "HomePlugAV" as a name, and my housemate's adapter has a different name ... then they will all work (get on the internet) - but my housemate and I will have privacy?
Are there any issues about anyone being able to access my computer through the tv ...
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