User manual D-LINK DGS-3324SR

[. . . ] xStack Stackable Gigabit Layer 3 Switch Manual D-Link TM xStack Release IV High Density Layer 3 Stackable Gigabit Switch Manual xStack Stackable Gigabit Layer 3 Switch Manual _________________________________________________________________________________ Information in this document is subject to change wi thout notice. Reproduction in any manner whatsoever without the written permission of D-Link Computer Corporation is strictly forbidden. Trademarks used in this text: D-Link and the D-LINK logo are trademarks of D-Link Computer Corporation; Microsoft and Windows are registered trademarks of Microsoft Corporation. Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. [. . . ] Otherwise, the format of each of the five types of link-state advertisements is different. Link-State Acknowledgment Packet Link-State Acknowledgment packets are OSPF packet type 5. To make the folding of link-state advertisements reliable, flooded advertisements are explicitly acknowledged. This acknowledgment is accomplished through the sending and receiving of Link-State Acknowledgment packets. Multiple link-state advertisements can be acknowledged in a single Link-State Acknowledgment packet. Depending on the state of the sending interface and the source of the advertisements being acknowledged, a Link-State Acknowledgment packet is sent either to the multicast address AllSPFRouters, to the multicast address AllDRouters, or as a unicast packet. The format of this packet is similar to that of the Data Description packet. The body of both packets is simply a list of linkstate advertisement headers. The format of the Link-State Acknowledgment packet is shown below: Link-State Acknowledgment Packet Version No. 5 Router ID Area ID Checksum Authentication Authentication Packet Length Authentication Type Link-State Advertisement Header . . . Figure 6- 115. Link State Acknowledge Packet Each acknowledged link-state advertisement is described by its link-state advertisement header. It contains all the information required to uniquely identify both the advertisement and the advertisement's current instance. 177 xStack Stackable Gigabit Layer 3 Switch Manual Link-State Advertisement Formats There are five distinct types of link-state advertisements. Each link-state advertisement begins with a standard 20-byte linkstate advertisement header. Succeeding sections then diagram the separate link-state advertisement types. Each link-state advertisement describes a piece of the OSPF routing domain. In addition, whenever the router is elected as the Designated Router, it originates a network links advertisement. The flooding algorithm is reliable, ensuring that all routers have the same collection of link-state advertisements. The collection of advertisements is called the linkstate (or topological) database. From the link-state database, each router constructs a shortest path tree with itself as root. There are four types of link state advertisements, each using a common link state header. These are: · · · · Router Links Advertisements Network Links Advertisements Summary Link Advertisements Autonomous System Link Advertisements Link State Advertisement Header All link state advertisements begin with a common 20-byte header. This header contains enough information to uniquely identify the advertisements (Link State Type, Link State ID, and Advertising Router). Multiple instances of the link state advertisement may exist in the routing domain at the same time. This is accomplis hed by examining the link state age, link state sequence number and link state checksum fields that are also contained in the link state advertisement header. [. . . ] support@dlink. fi Teknisk Support På vår hemsida kan du hitta mer information om mjukvaru uppdateringar och annan användarinformation. D-Link tillhandahåller teknisk support till kunder i Sverige under hela garantitiden för denna produkt. Teknisk Support för kunder i Sverige: D-Link Teknisk Support via telefon: 0770-33 00 35 Vardagar 08. 00-20. 00 D-Link Teknisk Support via Internet: http://www. dlink. se email:support@dlink. se 71 C1 202 : 100025 8008868192/(028)85176977 (028)85176948 9 1107 :100081 (010)68477035/68477036/68477037 (010)68477036 http://www. dlink. com. cn 09:0018:00 You can find software updates and user documentation on the DLink website. D-Link provides free technical support for customers within the United States and within Canada for the duration of the warranty period on this product. and Canadian customers can contact D-Link technical support through our website, or by phone. Technical Support Tech Support for customers within the United States: D-Link Technical Support over the Telephone: (888) 843-6100 Hours of Operation: 8:00AM to 6:00PM PST D-Link Technical Support over the Internet: http://support. dlink. com email:support@dlink. com Tech Support for customers within Canada: D-Link Technical Support over the Telephone: (800) 361-5265 Monday to Friday 7:30am to 12:00 pm EST D-Link Technical Support over the Internet: http://support. dlink. ca email:support@dlink. ca International Offices U. S. A 17595 Mt. [. . . ]