This boundary may be imple- mented at the edge router (in the stubnetwork), at the boundary router (in the transit network), or at the bandwidth broker for the intserv network.
In either case, it may sometimes be necessary to protect the network by policing at various points, both within the stubnetwork and/or at the interface to the transit network.
For example, within the stubnetwork, routers may police the aggregate traffic coming from a host to ensure that the host is not exceeding its traffic limit.
A stub domain with a set of private network addresses could be enabled to communicate with external network by dynamically mapping the set of private addresses to a set of globally valid network addresses.
Stub A's NAT is assigned the class C address block 198.76.29.0/24, and Stub B's NAT is assigned the class C address block 198.76.28.0/24.
Say a host in stub A wished to send packets to a host in stub B, but the global addresses of stub B overlapped the private addressees of stub A. In this case, the routers in stub A would not be able to distinguish the global address of stub B from its own private addresses.
A stub (circuit), a calculated length section of transmission line used to match impedance in transmission lines
A ticket stub, which, once a ticket is collected, is usually the remaining end of the ticket
stub, mature tree cut above a height of 3-5 metres and retained as a standing stem following timber harvest, usually for wildlife or archaeological purposes.
en.wikipedia.org /wiki/Stub (188 words)
Proxy ARP(Site not responding. Last check: 2007-10-12)
A stubnetwork is a segment that has an address range that is a subset of the address range of another segment (the parent network).
The parent network and the stubnetwork are separated by a router.
An example is a parent network with an address range of 89.0.0.1 to 89.255.255.254 and a stubnetwork with an address range of 89.1.0.1 to 89.1.255.254.
When the network is small, there is a single connection point to other networks, and there are no redundant routes, a static routing is enough.
Calculate the new backup DR for the network as follows: If one or more of the routers have declared themselves backup DR (in their Hello Packets) the one with the highest router priority is declared to be backup DR. In case of a tie, the one having the highest router ID is chosen.
Calculate the new DR for the network as follows: If one or more of the routers have declared themselves DR (in their Hello Packets) the one with the highest router priority is declared to be DR. In case of a tie, the one having the highest router ID is chosen.
Network Address Translation allows a single device, such as a router, to act as an agent between the Internet (or "public network") and a local (or "private") network.
Developed by Cisco, Network Address Translation is used by a device (firewall, router or computer) that sits between an internal network and the rest of the world.
An internal network (stub domain) has been set up with IP addresses that were not specifically allocated to that company by IANA (Internet Assigned Numbers Authority), the global authority that hands out IP addresses.
If these two stub procedures have the same input and output parameters of the same data types, the code in each of their respective B blocks is identical.
Finally, the size of the stub file may be reduced even more by utilizing a menu structure for invoking the various B blocks and eliminating the command stub procedures.
The command stub procedures are eliminated in the preferred embodiment by utilizing a macro definition in a generated header file included in front of the application program.
Basic Network Address Translation or Basic NAT is a method by which IP addresses are mapped from one group to another, transparent to end users.
When stub A host 10.33.96.5 wishes to send a packet to stub B host 10.81.13.22, it uses the globally unique address 198.76.28.4 as destination, and sends the packet to its primary router.
In Basic NAT setup, when private network nodes outnumber global addresses available for mapping (say, a class B private network mapped to a class C global address block), external network access to some of the local nodes is abruptly cut off after the last global address from the address list is used up.
DNS Stub Zones in Windows Server 2003(Site not responding. Last check: 2007-10-12)
Stub zones are a new feature of DNS in Windows Server 2003 that can be used to streamline name resolution, especially in a split namespace scenario.
This means replicating zone information from master to stub zone adds almost nil DNS traffic to your network as the records for name servers rarely change unless you decommission an old name server or deploy a new one.
Another use of stub zones is to keep delegated zone information up to date and prevent lame delegations from wrecking name resolution within a forest, and that would make a good topic for a future article.
A stubnetwork is a somewhat casual term describing a computer network, or part of an internetwork, that meets one or more of the following criteria:
A network that is only accessible by one path.
A stubnetwork is thus typically a network with no knowledge of other networks, and will typically send much or all of its non-local traffic out via a default route.
The graph's vertices are routers, transit networks and stubnetworks.
Otherwise, W is a transit vertex (router or transit network).
This calculation is shown in Section 16.1.1; input to this calculation is the destination (the stubnetwork) and the parent vertex (the router vertex).
www.cotse.com /CIE/RFC/1583/87.htm (2009 words)
NAT Translation - How to Network your DVR(Site not responding. Last check: 2007-10-12)
The router must be a special kind of router, called a "network address translation" (NAT) router.
The first thing to do is connect the NAT router (such as a Linksys BEFSR41) to the cable modem and verify the basic operation of the router and the cable modem.
The most common situation will be to configure the router to act as a DHCP (Dynamic Host Configuration Protocol) server, and to configure the DV Series DVRs to obtain their IP addresses automatically.
A hub-and-spoke network is a typical network where a hub (high-end router) serves many spokes (low-end routers).
If there are 100 routers in a stubnetwork, more memory is necessary on the spokes to hold the large database.
However, a flap in one stub area will still trigger SPF to run on the spokes, so this overhead cannot be cured by making a small stub area with no summary and no externals.
RFC 3022 Traditional NAT January 2001 security assured by IPSec cannot be assumed to end hosts, with a NAT device enroute.
RFC 3022 Traditional NAT January 2001 When stub A host 10.33.96.5 wishes to send a packet to stub B host 10.81.13.22, it uses the globally unique address 198.76.28.4 as destination, and sends the packet to its primary router.
RFC 3022 Traditional NAT January 2001 as trying to attack another machine or even sending large amounts of spam) it is more difficult to track the actual source of trouble because the IP address of the host is hidden in a NAT router.
For links to transit networks, numbered links to routers and virtual links, this field specifies the IP interface address of the associated router interface (this is needed by the routing table calculation, see Section 16.1.1).
Else if the state of the interface is Waiting, add a Type 3 link (stubnetwork) whose Link ID is the IP network number of the attached network and whose Link Data is the attached network's address mask.
A host route is represented as a Type 3 link (stubnetwork) whose Link ID is the host's IP address and whose Link Data is the mask of all ones (0xffffffff).
