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D-Link DGS-3024 — обзор форматов пакетов Link-State для маршрутизаторов [115/184]
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D-Link DES-3350SR Standalone Layer 3 Switch
105
The format of this packet is similar to that of the Data Description packet. The body of both packets is simply a list of link-state
advertisement headers.
The format of the Link-State Acknowledgment packet is shown below:
Version No.
Packet Length
Router ID
Area ID
Authentication Type
Authentication
Authentication
Checksum
Link-State Acknowledgment Packet
5
Link-State Advertisement Header ...
Figure 9 - 21. 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.
Link-State Advertisement Formats
There are five distinct types of link-state advertisements. Each link-state advertisement begins with a standard 20-byte link-state
advertisement header. Succeeding sections then diagram the separate link-state advertisement types.
Each link-state advertisement describes a piece of the OSPF routing domain. Every router originates a router links advertisement.
In addition, whenever the router is elected as the Designated Router, it originates a network links advertisement. Other types of
link-state advertisements may also be originated. The flooding algorithm is reliable, ensuring that all routers have the same
collection of link-state advertisements. The collection of advertisements is called the link-state (or topological) database.
From the link-state database, each router constructs a shortest path tree with itself as root. This yields a routing table.
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. It is then necessary to determine which instance is more recent. This is
accomplished 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.
The format of the Link State Advertisement Header is shown below:
Link-State Advertisement Header
Link-State Age
Options Link-State Type
Link-State ID
Advertising Router
Link-State Sequence Number
Link-State Checksum
Length
Figure 9 - 22. Link State Advertisement Header
Field Description
Link State Age
The time is seconds since the link state advertisement was originated.
Содержание
521- User s guide
- D link des 3350sr standalone layer 3 switch
- Table of contents
- Intended readers
- D link des 3350sr standalone layer 3 switch
- Preface
- Notes notices and cautions
- D link des 3350sr standalone layer 3 switch
- Safety instructions
- Safety cautions
- Protecting against electrostatic discharge
- General precautions for rack mountable products
- D link des 3350sr standalone layer 3 switch
- D link des 3350sr standalone layer 3 switch
- Section 1
- Performance features
- Introduction
- Gigabit ethernet technology
- Fast ethernet technology gigabit ethernet technology switch stacking performance features ports
- Fast ethernet technology
- D link des 3350sr standalone layer 3 switch
- Switching technology
- Spanning tree
- Software features
- Management
- Ip multicast
- D link des 3350sr standalone layer 3 switch
- Configuration
- Security
- Routing protocol
- Port trunking
- Port configuration and monitoring
- Mib support
- D link des 3350sr standalone layer 3 switch
- Access control list support acl
- D link des 3350sr standalone layer 3 switch
- D link des 3350sr standalone layer 3 switch
- Unpacking installation power on
- Unpacking and setup
- Unpacking
- Section 2
- Rack installation
- Installation
- Desktop or shelf installation
- Power on
- Power failure
- D link des 3350sr standalone layer 3 switch
- Section 3
- Rear panel
- Identifying external components
- Front panel rear panel side panels gigabit combo ports led indicators
- Front panel
- D link des 3350sr standalone layer 3 switch
- Side panels
- Led indicators
- Gigabit combo ports
- D link des 3350sr standalone layer 3 switch
- Switch to hub or switch
- Switch to end node switch to hub or switch 10base t device 100base tx device
- Switch to end node
- Section 4
- D link des 3350sr standalone layer 3 switch
- Connecting the switch
- Base tx device
- Base t device
- Introduction to switch management
- D link des 3350sr standalone layer 3 switch
- Connecting the console port rs 232 dce
- Command line console interface through the serial port
- Web based management interface
- Snmp based management
- Section 5
- Management options web based management interface snmp based management managing user accounts command line console interface through the serial port connecting the console port rs 232 dce first time connecting to the switch password protection snmp settings ip address assignment connecting devices to the switch
- Management options
- First time connecting to the switch
- D link des 3350sr standalone layer 3 switch
- Password protection
- D link des 3350sr standalone layer 3 switch
- Snmp settings
- D link des 3350sr standalone layer 3 switch
- Ip address assignment
- D link des 3350sr standalone layer 3 switch
- D link des 3350sr standalone layer 3 switch
- Connecting devices to the switch
- D link des 3350sr standalone layer 3 switch
- Web based switch management
- User accounts management
- Section 6
- Login to web manager
- Introduction login to web manager user accounts management admin and user privileges save changes areas of the user interface web pages
- Introduction
- User account management
- Save changes
- D link des 3350sr standalone layer 3 switch
- Admin and user privileges
- D link des 3350sr standalone layer 3 switch
- Areas of the user interface
- Area 3
- Area 2
- Area 1
- D link des 3350sr standalone layer 3 switch
- Web pages
- Section 7
- Ip address switch information advanced settings port description port configuration port mirroring igmp spanning tree forwarding filtering vlans port bandwidth sntp settings port security qos lacp access profile table ip mac binding pae access entity
- Ip address
- D link des 3350sr standalone layer 3 switch
- Configuration
- D link des 3350sr standalone layer 3 switch
- Switch information
- D link des 3350sr standalone layer 3 switch
- Advanced settings
- Port description
- D link des 3350sr standalone layer 3 switch
- Port configuration
- D link des 3350sr standalone layer 3 switch
- D link des 3350sr standalone layer 3 switch
- D link des 3350sr standalone layer 3 switch
- Port mirroring
- Igmp snooping
- D link des 3350sr standalone layer 3 switch
- Static router ports entry
- D link des 3350sr standalone layer 3 switch
- W rapid spanning tree
- Spanning tree
- Port transition states
- D link des 3350sr standalone layer 3 switch
- Stp switch settings
- P2p port
- Edge port
- D link des 3350sr standalone layer 3 switch
- D 802 w compatibility
- Stp port settings
- D link des 3350sr standalone layer 3 switch
- D link des 3350sr standalone layer 3 switch
- Unicast forwarding
- D link des 3350sr standalone layer 3 switch
- Multicast forwarding
- D link des 3350sr standalone layer 3 switch
- Vlans on the des 3350sr
- Q vlan tags
- Q vlan packet forwarding
- Ieee 802 q vlans
- D link des 3350sr standalone layer 3 switch
- Static vlan entry
- D link des 3350sr standalone layer 3 switch
- D link des 3350sr standalone layer 3 switch
- Tagging and untagging
- Port vlan id pvid
- D link des 3350sr standalone layer 3 switch
- The default vlan
- Ingress checking
- D link des 3350sr standalone layer 3 switch
- D link des 3350sr standalone layer 3 switch
- Port bandwidth
- D link des 3350sr standalone layer 3 switch
- Sntp settings
- D link des 3350sr standalone layer 3 switch
- Time zone and dst
- D link des 3350sr standalone layer 3 switch
- Current time settings
- Port security
- D link des 3350sr standalone layer 3 switch
- D link des 3350sr standalone layer 3 switch
- Qos quality of service
- D link des 3350sr standalone layer 3 switch
- Traffic control
- P default priority
- D link des 3350sr standalone layer 3 switch
- P user priority
- D link des 3350sr standalone layer 3 switch
- Traffic segmentation
- Scheduling
- D link des 3350sr standalone layer 3 switch
- Link aggregation
- D link des 3350sr standalone layer 3 switch
- D link des 3350sr standalone layer 3 switch
- D link des 3350sr standalone layer 3 switch
- Lacp port
- D link des 3350sr standalone layer 3 switch
- D link des 3350sr standalone layer 3 switch
- Access profile table
- Part 1
- Ethernet
- D link des 3350sr standalone layer 3 switch
- D link des 3350sr standalone layer 3 switch
- Packet content mask
- D link des 3350sr standalone layer 3 switch
- D link des 3350sr standalone layer 3 switch
- Part 2
- D link des 3350sr standalone layer 3 switch
- D link des 3350sr standalone layer 3 switch
- Ethernet
- D link des 3350sr standalone layer 3 switch
- D link des 3350sr standalone layer 3 switch
- Packet content mask
- D link des 3350sr standalone layer 3 switch
- D link des 3350sr standalone layer 3 switch
- D link des 3350sr standalone layer 3 switch
- Ip mac binding port
- Ip mac binding
- D link des 3350sr standalone layer 3 switch
- Ip mac binding table
- D link des 3350sr standalone layer 3 switch
- X port based and mac based access control
- Port access entity 802 x
- Ip mac binding blocked
- D link des 3350sr standalone layer 3 switch
- D link des 3350sr standalone layer 3 switch
- Client
- Authenticator
- Authentication server
- D link des 3350sr standalone layer 3 switch
- Authentication process
- Understanding 802 x port based and mac based network access control
- Radius server
- Port based network access control
- Once the connected device has successfully been authenticated the port then becomes authorized and all subsequent traffic on the port is not subject to access control restriction until an event occurs that causes the port to become unauthorized hence if the port is actually connected to a shared media lan segment with more than one attached device successfully authenticating one of the attached devices effectively provides access to the lan for all devices on the shared segment clearly the security offered in this situation is open to attack
- Network access uncontrolled port
- Network access controlled port
- Figure 7 59 example of typical port based configuration
- Ethernet switch
- D link des 3350sr standalone layer 3 switch
- Radius server
- Network access uncontrolled port
- Network access controlled port
- Mac based network access control
- Ethernet switch
- D link des 3350sr standalone layer 3 switch
- Configure authenticator
- D link des 3350sr standalone layer 3 switch
- Port capability settings
- D link des 3350sr standalone layer 3 switch
- Initialize ports for port based 802 x
- D link des 3350sr standalone layer 3 switch
- Initializing ports for mac based 802 x
- D link des 3350sr standalone layer 3 switch
- Reauthenticate ports for port based 802 x
- Reauthenticate ports for mac based 802 x
- D link des 3350sr standalone layer 3 switch
- Radius server
- D link des 3350sr standalone layer 3 switch
- Security ip
- Section 8
- Management
- D link des 3350sr standalone layer 3 switch
- User accounts
- Security ip user accounts snmp v3
- Snmpv3
- Snmp user table
- D link des 3350sr standalone layer 3 switch
- Snmp view table
- D link des 3350sr standalone layer 3 switch
- Snmp group table
- D link des 3350sr standalone layer 3 switch
- D link des 3350sr standalone layer 3 switch
- Snmp community table
- D link des 3350sr standalone layer 3 switch
- Snmp host table
- D link des 3350sr standalone layer 3 switch
- Snmp engine id
- D link des 3350sr standalone layer 3 switch
- Section 9
- Layer 3 ip networking
- Ip interface settings layer 3 global settings md5 key table settings route redistribution settings static default route settings static arp settings rip ospf dhcp bootp relay dns relay ip multicast routing protocol
- Ip interface settings
- D link des 3350sr standalone layer 3 switch
- D link des 3350sr standalone layer 3 switch
- Md5 key table settings
- Layer 3 global settings
- D link des 3350sr standalone layer 3 switch
- Route redistribution settings
- D link des 3350sr standalone layer 3 switch
- Static default route settings
- D link des 3350sr standalone layer 3 switch
- Static arp settings
- D link des 3350sr standalone layer 3 switch
- D link des 3350sr standalone layer 3 switch
- Rip version 1 message format
- Rip2 message format
- Rip version 2 extensions
- Rip interface settings
- Rip command codes
- Rip 1 route interpretation
- Rip 1 message
- D link des 3350sr standalone layer 3 switch
- D link des 3350sr standalone layer 3 switch
- Shortest path tree
- Shortest path algorithm
- Ospf cost
- Link state algorithm
- D link des 3350sr standalone layer 3 switch
- Areas and border routers
- 13 1 222 11 0
- Router c
- Router b
- Router a
- D link des 3350sr standalone layer 3 switch
- Virtual links
- Simple password authentication
- Partitioning the backbone
- Ospf authentication
- Message digest authentication md 5
- Link state packets
- D link des 3350sr standalone layer 3 switch
- Backbone and area 0
- Areas not physically connected to area 0
- Building adjacency
- Adjacencies on point to point interfaces
- Adjacencies
- Neighbors
- Designated router election
- D link des 3350sr standalone layer 3 switch
- Ospf packet header
- Ospf packet formats
- Hello packet
- D link des 3350sr standalone layer 3 switch
- Hello packet
- Database description packet
- D link des 3350sr standalone layer 3 switch
- Link state request packet
- Database description packet
- D link des 3350sr standalone layer 3 switch
- Link state request packet
- Link state acknowledgment packet
- D link des 3350sr standalone layer 3 switch
- Link state update packet
- Link state advertisement header
- Link state advertisement formats
- Link state acknowledgment packet
- D link des 3350sr standalone layer 3 switch
- Routers links advertisements
- Router links advertisements
- D link des 3350sr standalone layer 3 switch
- Network links advertisements
- D link des 3350sr standalone layer 3 switch
- Summary link advertisements
- Network link advertisements
- D link des 3350sr standalone layer 3 switch
- D link des 3350sr standalone layer 3 switch
- Autonomous systems external link advertisements
- As external link advertisements
- Ospf general settings
- Ospf area setting
- D link des 3350sr standalone layer 3 switch
- Ospf interface settings
- D link des 3350sr standalone layer 3 switch
- D link des 3350sr standalone layer 3 switch
- Ospf virtual link settings
- D link des 3350sr standalone layer 3 switch
- Ospf area aggregation settings
- D link des 3350sr standalone layer 3 switch
- Ospf host route settings
- D link des 3350sr standalone layer 3 switch
- Dhcp bootp relay information
- Dhcp bootp relay
- D link des 3350sr standalone layer 3 switch
- D link des 3350sr standalone layer 3 switch
- Mapping domain names to addresses
- Domain name resolution
- Dns relay
- Dhcp bootp relay interface settings
- Dns relay static settings
- Dns relay information
- D link des 3350sr standalone layer 3 switch
- Ip multicast routing protocol
- Igmp versions 1 and 2
- D link des 3350sr standalone layer 3 switch
- Igmp interface settings
- D link des 3350sr standalone layer 3 switch
- Dvmrp interface settings
- D link des 3350sr standalone layer 3 switch
- D link des 3350sr standalone layer 3 switch
- D link des 3350sr standalone layer 3 switch
- Pim dm interface settings
- D link des 3350sr standalone layer 3 switch
- Section 10
- Monitoring
- D link des 3350sr standalone layer 3 switch
- Cpu utilization port utilization packets errors size mac address arp table igmp snooping group igmp snooping forwarding vlan status router port port access control
- Cpu utilization
- Port utilization
- Packets
- D link des 3350sr standalone layer 3 switch
- Received rx
- D link des 3350sr standalone layer 3 switch
- Umb cast rx
- D link des 3350sr standalone layer 3 switch
- D link des 3350sr standalone layer 3 switch
- D link des 3350sr standalone layer 3 switch
- Transmitted tx
- Received rx
- Errors
- D link des 3350sr standalone layer 3 switch
- D link des 3350sr standalone layer 3 switch
- Transmitted tx
- D link des 3350sr standalone layer 3 switch
- Packet size
- D link des 3350sr standalone layer 3 switch
- D link des 3350sr standalone layer 3 switch
- Mac address
- D link des 3350sr standalone layer 3 switch
- D link des 3350sr standalone layer 3 switch
- Arp table
- Igmp snooping forwarding
- D link des 3350sr standalone layer 3 switch
- Igmp snooping group
- Vlan status
- Router port
- D link des 3350sr standalone layer 3 switch
- Power status
- Port access control
- D link des 3350sr standalone layer 3 switch
- Authenticator state
- Routing table
- Layer 3 features
- Ip address
- D link des 3350sr standalone layer 3 switch
- The ip multicast forwarding table window may be found in the monitoring menu in the layer 3 feature folder this window will show current ip multicasting information on the switch to search a specific entry enter an multicast group ip address into the multicast group field or a source ip address and click find
- Ip multicast forwarding table
- Igmp group table
- D link des 3350sr standalone layer 3 switch
- Ospf monitoring
- Ospf lsdb table
- D link des 3350sr standalone layer 3 switch
- Ospf virtual neighbor
- Ospf neighbor table
- Dvmrp monitoring
- D link des 3350sr standalone layer 3 switch
- Pim neighbor table
- Pim monitoring
- Dvmrp routing table
- Dvmrp routing next hop table
- Dvmrp neighbor table
- D link des 3350sr standalone layer 3 switch
- D link des 3350sr standalone layer 3 switch
- Download firmware from server
- D link des 3350sr standalone layer 3 switch
- Upload settings to tftp server
- Tftp utilities
- Tftp services switch history ping test save changes reboot services logout
- Section 11
- Maintenance
- Download settings from tftp server
- Upload log to tftp server
- Switch history
- D link des 3350sr standalone layer 3 switch
- Save changes
- Reboot services
- Ping test
- D link des 3350sr standalone layer 3 switch
- Reboot
- Logout
- D link des 3350sr standalone layer 3 switch
- Reset system
- Reset config
- Technical specifications
- Performance
- General
- D link des 3350sr standalone layer 3 switch
- Appendix a
- Performance
- D link des 3350sr standalone layer 3 switch
- Understanding and troubleshooting the spanning tree protocol
- D link des 3350sr standalone layer 3 switch
- Blocking state
- Appendix b
- Listening state
- Learning state
- D link des 3350sr standalone layer 3 switch
- Forwarding state
- D link des 3350sr standalone layer 3 switch
- Disabled state
- D link des 3350sr standalone layer 3 switch
- Troubleshooting stp
- Spanning tree protocol failure
- D link des 3350sr standalone layer 3 switch
- Unidirectional link
- Packet corruption
- Full half duplex mismatch
- D link des 3350sr standalone layer 3 switch
- Resource errors
- Identifying a data loop
- D link des 3350sr standalone layer 3 switch
- Warranty and registration
- All countries and regions excluding usa
- Warranty and registration information
- D link shall not be liable under this warranty if its testing and examination disclose that the alleged defect in the product does not exist or was caused by the customer s or any third person s misuse neglect improper installation or testing unauthorized attempts to repair or any other cause beyond the range of the intended use or by accident fire lightning or other hazard
- Product registration
- D link europe limited product warranty
- Telefon 44 020 8731 5555
- Räumlicher geltungsbereich der eingeschränkten garantie
- Produkttyp gewährleistungslaufzeit
- Leistungsumfang der eingeschränkten garantie
- Laufzeit der eingeschränkten garantie
- Garantiegeber d link europe ltd 4th floor merit house edgware road colindale london nw9 5 ab vereinigtes königreich
- Fax 44 020 8731 5511 www dlink com
- Ersatzteile z b externe netzteile lüfter ein 1 jahr
- Einschränkung der garantie
- D link europe limited produktgarantie
- Allgemeine bedingungen
- Alle weiteren produkte zwei 2 jahre
- Verwaltete switches d h switches mit eingebauten snmp agents einschließlich modulen und verwaltungssoftware fünf 5 jahre
- Type de produit période de garantie
- Tous autres produits deux 2 ans
- Switches gérés switches comportant un agent snmp intégré y compris modules et logiciels de gestion cinq 5 ans
- Période de garantie produit limitée
- Pièces détachées adaptateurs d alimentation externes ventilateurs un 1 an
- Limitation de la garantie produit
- Garant d link europe ltd 4th floor merit house edgware road colindale london nw9 5 ab royaume uni tél 44 020 8731 5555 fax 44 020 8731 5511 www dlink co uk
- Exécution de la garantie produit limitée
- Etendue géographique de la garantie produit limitée
- D link europe a limité la garantie des produits
- Conditions générales
- Garantí a limitada del producto d link europa
- Estos perí odos de garantí a están en vigor para todos los productos d link que hayan sido comprados en paí ses europeos a d link o a alguno de sus proveedores o distribuidores autorizados a partir del 1 de enero del 2004 todos los productos comprados en paí ses europeos a d link o a uno de sus proveedores o distribuidores autorizados antes del 1 de enero del 2004 cuentan con 5 años de garantí a excepto las fuentes de alimentación los ventiladores y los accesorios que cuentan con 2 años de garantí a
- Il periodo di garanzia qui menzionato sostituisce qualsiasi altro periodo di garanzia definito nel manuale d uso o nel contratto di acquisto del prodotto se avete acquistato un prodotto d link in qualità di consumatore i vostri diritti rimangono invariati
- D link europe termini di garanzia dei prodotti
- International offices
- Registration card
- Product model product serial no product installed in type of computer e g compaq 486 product installed in computer serial no
- All countries and regions excluding usa
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Изучите форматы пакетов Link-State, их заголовки и типы. Узнайте, как маршрутизаторы обмениваются информацией для построения таблиц маршрутизации.