Showing papers on "Virtual routing and forwarding published in 1992"

IP addressing and routing in a local wireless network

Abstract: IP is the basic protocol in the Internet. The authors explore a variety of possibilities to adapt the wireless environment to that of IP. They describe the requirements and show how these can be accommodated by using the existing IP. At the heart of the problem is the lack of a capability in the current IP routing services to track topological changes. Several alternatives are described, each making use of a different combination of the addressing and routing features offered by IP. The alternatives are compared. The tradeoffs among these alternatives are explored. >

Apparatus and method for maintaining forwarding information in a bridge or router using multiple free queues having associated free space sizes

Abstract: A forwarding information management system for a bridge or router is disclosed, including a method and apparatus for maintaining forwarding entries within a forwarding table. The forwarding table is allocated into forwarding entries, and the forwarding entries organized into forwarding entry sets. A set of free queues is used to manage the free space segments in the forwarding table that are not allocated into forwarding entries. Each free queue maintains pointers to free space segments of a particular size. A forwarding entry adding process creates a new forwarding entry set including a new forwarding entry, selects a non-empty free queue for free space segments large enough to hold the new forwarding entry set, and writes the new forwarding entry set one of the free space segments. Also included in the system are a forwarding entry deleting process, a learning process providing input for the forwarding entry adding process, and an aging process providing input for the forwarding entry deleting process. In an example embodiment, a hash table is used to locate the forwarding entry sets in the forwarding table. In a preferred embodiment, forwarding entries within the forwarding entry sets are organized into balanced binary trees.

An Experiment in DNS Based IP Routing

Abstract: Potential solutions to the routing explosion. This memo defines an Experimental Protocol for the Internet community.

IP Forwarding Table MIB

Abstract: This memo defines an update to RFC 1354. The significant difference between this MIB and RFC 1354 is the recognition (explicitly discussed but by consensus left to future work) that CIDR routes may have the same network number but different network masks. [STANDARDS-TRACK]

Internetworking across public ATM networks

Abstract: The emergence of public ATM networks, such as B-ISDN and SMDS, is considered to have a high impact on future internetworking environments. This paper presents a new bridging architecture designed for that purpose and discusses its feasibility in TCP/IP networks. The new architecture, called Open Bridging, uses special capabilities of public ATM networks, such as the hierarchical addressing mechanism and the routing support inside the network, to provide for efficient interconnection of remote LANs across public ATM networks. The operation of Open Bridges does not interfere with current TCP/IP protocols. However, the efficiency of Open Bridging can be obtained in the interconnection of TCP/IP networks if a slight extension to the address resolution protocol (ARP) is implemented to push the routing of data packets down to the MAC level. Moreover, the architecture of Open Brouters is also proposed to enable full interoperability among domains using either Open Bridging or IP routing. >