Lucent Optical Management System (oms) Release
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- Điều hướng trang này:
- Next hop node
- Alcatel-Lucent - Proprietary
- Subnetwork type Next hop node (identity type)
| Next hop subnetwork
A router, by its nature, must be connected to multiple subnetworks. Each subnetwork is connected to a separate port on that router. The next hop port identifies the subnetwork to exit this node for the next hop towards the destination. For the DSwT IP router entity, there are 2 types of port/subnetwork: 1. LAN: this is the Ethernet (common subnetwork type for IP routers). 2. CLNP tunnel: this is a logical subnetwork created by the OSI CLNP network itself. From the IP router perspective, this subnetwork is seen as a non-broadcast multiple access (NBMA) subnetwork. The IP router simply sees all the neighbor IP router entities connected together to this NBMA. It does not see any of the OSI CLNP nodes inside this network. Next hop node Once the correct exit port (subnetwork) has been identified, the correct node on that subnetwork must be identified by its SNPA. This could be an Ethernet address (for a LAN), or a X.121 address for a X.25 subnetwork. When the subnetwork is a point-to-point link then there is no need to identify the next hop. There are various Management communication setup concepts Dual stack with tunneling (DSwT) ................................................................................................................................................................................................................................... 365-312-875R5.2 Issue 1, March 2007 Alcatel-Lucent - Proprietary See notice on first page 3-17 ways to identify the next hop node, and they depend on the type of subnetwork that node is attached to. An overview is provided in the following table: Subnetwork type Next hop node (identity type) LAN IP address or none if the destination is actually on this LAN (there is no next hop node). CLPN tunnel NSAP Management communication setup concepts Dual stack with tunneling (DSwT) ................................................................................................................................................................................................................................... 3-18 tải về 2.06 Mb. Chia sẻ với bạn bè của bạn:
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