Database Description Packet | D-Link DES-3326 instruction

DES-3326 Layer 3 Fast Ethernet Switch User’s Guide

Table 5-14. Hello Packet

The Database Description Packet

Database Description packets are OSPF packet type 2. These packets are exchanged when an adjacency is being initialized. They describe the contents of the topological database. Multiple packets may be used to describe the database. For this purpose a poll-response procedure is used. One of the routers is designated to be master, the other a slave. The master seconds Database Description packets (polls) that are acknowledged by Database Description packets sent by the slave (responses). The responses are linked to the polls via the packets’ DD sequence numbers.

Database Description Packet

Version No.

2	Packet Length

Router ID

Area ID

	Checksum	Authentication Type


		Authentication


		Authentication


	Reserved I M MS	Reserved	Options

		DD Sequence No.


	Link-State Advertisement Header ...

	Figure 5-27. Database Description Packet

	Field	Description

Options		The optional capabilities supported by the router.
I – bit		The Initial bit. When set to 1, this packet is the
		first in the sequence of Database Description
		packets.
M – bit		The More bit. When set to 1, this indicates that
		more Database Description packets will follow.
MS – bit		The Master Slave bit. When set to 1, this indicates
		that the router is the master during the Database
		Exchange process. A zero indicates the opposite.
DD Sequence Number		User to sequence the collection of Database
		Description Packets. The initial value (indicated by
		the Initial bit being set) should be unique. The DD
		sequence number then increments until the
		complete database description has been sent.

Table 5-15. Database Description Packet

The rest of the packet consists of a list of the topological database’s pieces. Each link state advertisement in the database is described by its link state advertisement header.

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D-Link DES-3326 manual Database Description Packet

Contents

DES-3326 Wichtige Sicherheitshinweise Hardware Software Trademarks Link Offices for Registration and Warranty ServiceCopyright Statement CE Mark Warning FCC WarningVcci Warning Bsmi Warning Page Table of Contents ARP ViiiPage Layer 3 Switching Introduction Features Performance FeaturesFunctions of a Layer 3 Switch Layer 2 Features Layer 3 Switch Features Traffic Classification and Prioritization Management Fast Ethernet Technology Optional Redundant Power SupplyGigabit Ethernet Technology Desktop or Shelf Installation InstallationUnpacking Rack Installation Installing rubber feet for desktop installation Power on Power Failure Front Panel Rear Panel Optional Plug-in Modules Side Panels1000BASE-T Module 1000BASE-SX Fiber Module 1000BASE-LX Fiber Module LED Indicators Gbic Two-Port Module Switch to End Node Switch to Hub or Switch 10BASE-T Device 100BASE-TX Device Diagnostic console port RS-232 DCE Local Console Management Boot screen IP Addresses and Snmp Community Names Traps Traps AuthenticationSnmp performs the following functions MIBs Packet Forwarding Filtering Some filtering is done automatically by the switchMAC Address Aging Time Ameter Description Default Value Spanning Tree Variable Description Default Value Bridge Protocol Data Units STP Port States Creating a Stable STP TopologyPort transitions from one state to another as follows Feature Default Value STP Port State Transitions User-Changeable STA Parameters Illustration of STP This example, only the default STP values are used Link Aggregation Link Aggregation Group VLANs Ieee 802.1Q VLANs802.1Q Vlan Packet Forwarding Some relevant terms 802.1Q Vlan Tags Ieee 802.1Q Packet Forwarding Port Vlan ID 10. Adding an Ieee 802.1Q Tag Tagging and Untagging VLANs in Layer 2 Only ModeIngress Filtering Layer 3-Based VLANs IP AddressesIP Addressing and Subnetting Address Classes 255 Subnet Masking Calculating the Number of Subnets and Nodes Classless InterDomain Routing Cidr CID Setting up IP Interfaces Cidr Internet Protocols VID Protocol Layering 11. OSI Seven Layer Network Model Layer 12. The Protocol Stack TCP/IP Packet Headers TCP 13. TCP Packet Header Ethernet 14. IP Packet Header TCP and UDP Well-Known Ports UDP and Icmp Domain Name System Mapping Domain Names to Addresses Dhcp Servers Domain Name ResolutionIP Routing Packet Fragmentation and Reassembly Multicast Groups MulticastingAddress Assignment Internet Group Management Protocol Igmp Igmp Versions 1 11. Igmp Type Codes Flooding Multicast Routing AlgorithmsMulticast Spanning Trees Reverse Path Broadcasting RPB Reverse Path Multicasting RPM Protocol-Independent Multicast Dense Mode Multicast Routing ProtocolsRouting Protocols Distance Vector Multicast Routing Protocol Dvmrp RIP Version 1 Message Format 20. RIP v.1 Message Format RIP 1 Message RIP 1 Route InterpretationRIP Version 2 Extensions RIP2 Message Format Open Shortest Path First Ospf 21. RIP Message Format Link-State Algorithm Shortest Path AlgorithmOspf Cost Shortest Path Tree 22. Constructing a Shortest Path Tree Areas and Border Routers Link-State Packets Ospf Authentication Simple Password AuthenticationMessage Digest Authentication MD-5 Backbone and Area Virtual Links Areas Not Physically Connected to AreaPartitioning the Backbone Neighbors Designated Router Election AdjacenciesBuilding Adjacency Ospf Packet Formats Adjacencies on Point-to-Point InterfacesOspf Packet Header Hello Packet Field Description 26. Hello Packet Database Description Packet Database Description Packet Link-State Update Packet Link-State Request Packet Link-State Update Packet Link-State Acknowledgment Packet Link-State Advertisement Formats Link State Advertisement Header Router Links Advertisements 33. Routers Links Advertisement 18. Routers Links Advertisements − Network Links Advertisements FieldDescription Summary Link Advertisements Summary Link Advertisements Autonomous Systems External Link Advertisements AS External Link Advertisements 21. AS External System Advertisement Before You Start General Deployment Strategy Assigning IP Interface Addresses and Subnet Masks to VLANs Vlan LayoutDefining Static Routes First Time Connecting To The Switch Connecting to the SwitchConsole Usage Conventions Creating User Accounts Initial Console screen Setup User Accounts Menu User Accounts Management Switch Privilege Configuration Management Root User+ Root, User+ and Normal User Privileges Saving Changes Save Changes Confirmation screen Loading Factory Defaults Logging Onto The Switch Console To update or delete a user password Updating or Deleting User AccountsViewing Current User Accounts To view the current user accounts Deleting a User Account To delete a user account Basic Setup Setting Up The SwitchSwitch Information Remote Management Setup Configuring the Switch’s IP Address To set the switch’s IP address Snmp Settings To setup the switch for remote management Setting Up Trap Receivers 100 Port Locking Configure Ports101 Serial Port Settings View Ports 1 to 12 StateEnabled Speed/Duplex AutoHighlight Serial Port Settings and press Enter Flow Control Slip Settings Console Settings103 Switch Operation Mode Changing the Switch Operation ModeTo change the switch’s operating mode Highlight Switch Settings on the Main Menu and press Enter 19. Switch Settings menu 105 Menu Changes with Switch Operating Mode 106 Switch Mode Selection Switch Settings107 Layer 2 Switch Settings 300That is, how long a learned MAC Address is allowed to Remain idle. The Aging Time can be set to any value Switch Settings − Layer 3 IP Routing Protocol Settings Screen Hierarchy 110 BOOTP/DHCP Relay DNS Relay 111 Advanced Setup Configuring VLANsVLANs by Switch Operating Mode To create a new 802.1Q Vlan Action Vlan NameMembership 113 Tagging U/T To set the 802.1Q Vlan membership status of a portTo set a port as either a Tagged or an Untagged port 114 To configure the member ports of an 802.1Q Vlan Highlight Configure 802.1Q Port Settings and press EnterExample Edit 802.1Q Vlan screen 115 Configure Port ModuleFrom to PVID# To edit an existing 802.1Q Vlan To configure a port’s 802.1Q Vlan settings117 To edit a port’s Tagged or Untagged status To edit the 802.1Q Vlan membership of a port118 To setup IP Interfaces on the switch 119 Highlight Setup IP Interface and press Enter 120 Layer 3 IP Networking Setup Routing Information Protocol RIP 122 Password 123 Setup RIP Configuration Key IDKey 124 Name System Interface125 Setup Ospf 126 Ospf Area Setting State DisabledOspf Router Current Router Ospf Interface Configuration Entered in the MD5 Key Table Configuration menu. When Area IDRouter Priority Hello Interval Virtual Interface Configuration DescriptionTransit Area Neighbor Router ID Area Aggregation Configuration StatusNetwork Number Network Route Redistribution Settings Igmp Snooping Settings Layer 2 Multicast Setup133 To configure Igmp Snooping Switch Igmp SnoopingIeee 802.1Q Multicast Forwarding Querier StateNon VID Multicast MACAddress 135 Router Port M Static Router Port Settings136 Setup IP Multicast Multicast Interface ConfigurationTo setup IP multicasting on the switch Layer 3 Multicasting Interface Name Igmp Enabled138 Igmp Interface Configuration Dvmrp 140 To configure Pimdm for an IP interface 141 To configure a port for port mirroring Port MirroringJoin/Prune Interval 60. Mirroring Menu 143 Priority 144 Priority LevelLow Source/Destination Src MAC Address145 Highlight MAC Address Filter and press Enter Layer 2 Filtering146 Layer 3 IP Routing Filtering Parameter DescriptionSource/Destination 147 Forwarding Layer 2 ForwardingActionAdd/Modify Source/Destination Port 149 Static/Default Routes IP ForwardingAction Add Gateway IP Switch Spanning Tree Settings Static ARPAdd/Modify Interface Name IP Address MAC Address Status Enabled Group DefaultForward Delay Max. Age STP Group Configuration 153 Configure Ports View PortsPort Cost Priority 75. Link Aggregation screen 155 Configure Spanning Tree Method DisabledGroup ID Group Width STP Group Max Age Hello Time Forward Delay157 Spanning Tree Port Settings Create Spanning Tree GroupsGroup Name 158 Layer 2 Switch Utilities UtilitiesFrom 1 to 159 Upgrade Firmware from Tftp Server 160 Save Settings to Tftp Server Use Configuration File on Tftp Server161 Testing Connectivity with Ping Save History Log to Tftp ServerLayer 3 Utilities 162 BOOTP/DHCP Relay Relay Status DisabledBootp Hops Count Limit Relay Time Threshold0 Server DNS Relay164 Dnsr Cache StatusDisabled Dnsr Static Table Lookup StatusDisabledTo make a static DNS table entry 165 StatusEnabled ActionAdd/EditDomain Name 166 To display the network data compiled by the switch Network MonitoringLayer 2 Network Monitoring 167 Port Utilization To view the port utilization To view the error statistics for a port Port Error Packets169 Port Packet Analysis Frames Frames/secUnicast RX Multicast RX Browse MAC Address To view the MAC address forwarding tableTo search for a particular MAC address To view the Gvrp status table To view the Router Port table Browse Router Port173 To view the Igmp Snooping table Igmp Snooping174 Switch History To view the switch history logLayer 3 Network Monitoring To view the Network Monitoring Menu To view the contents of the IP Routing table Browse IP AddressRouting Table To view the IP address forwarding table ARP Table MaskGateway Hops Default IP Table To view the Default IP Address TableOspf Lsdb Table To view the Monitor Lsdb Table Cost 179 Ospf External Lsdb Table IP Multicast Forwarding Table Igmp Group TableTo view the IP multicast forwarding table To view the Igmp Group table Load Factory Defaults Dvmrp Routing TableTo view the Dvmrp Routing table 182 To reboot the switch from the console Reboot183 111. System Reboot Confirmation screen 184 Introduction Before You StartGeneral Deployment Strategy 185 Assigning IP Network Addresses and Subnet Masks to VLANs Vlan Layout186 Configuring the Switch Getting StartedManagement Defining Static Routes Switch Configuration Privilege Management Root User+ 188 Saving Changes Reboot and Load Factory Defaults189 Setting Up Web Management Setting an IP AddressSetting a Default Gateway IP address may alternatively be set manually as follows Setting the Administrator Password Setting Trap DestinationsSaving Configuration Changes Starting and Stopping the Web-based Manager Areas of the User Interface Web-based Manager’s User Interface192 Area Function 193 Link Menus 194 LinkMenus 195 BOOTP/DHCP Relay DNS Relay 196 Click the Switch Information link in the Configuration menu IP Address Configuring the Switch’s IP Address197 10. IP Address window 198 Default Gateway ManualSubnet Mask Management VID 11. Management Station IP Settings window 200 Click the Configure Ports link on the Configuration menu 201 202 Baud Rate Data BitsStop Bits 203 Remote IP Address Local IP Address204 Storm Mode MAC Address Aging Time 10 …1000000 secBroadcast/Multicas 205 Upper Threshold for Base portsModule ports 206 207 18 .1Q Static VLANs window 208 Tag EgressForbidden 209 Pvid 210 To configure the member ports of an 802.1Q Vlan to use Gvrp 211 To configure the member ports of an 802.1Q Vlan to use Gmrp 212 213 25. Setup IP Interface window 214 Setup the Routing Information Protocol RIP Subnet NameActive Yes 215 29. Setup RIP window 216 Ospf 217 AS Border Router State 218 Stub Default Cost TypeRemove 219 Auth Type 220 Neighbor Router 221 Network Number 222 Dest. Protocol Source Protocol223 To edit the IEEE802.1 Multicast Forwarding settings 224 39. Setup Ieee 802.1Q Multicast Forwarding window 225 To setup a static router port 226 42. Multicast Interface Configuration window 227 Igmp Settings VersionMax Resp 228 Dvmrp Settings To configure Dvmrp for an IP interfaceClick the Dvmrp Settings link on the IP Multicasting menu 229 PIM-DM Settings Nbr Report TimerClick the Pimdm Interface Configuration link Route Cost 231 Direction Ingress Source Port232 To configure a forwarding priority for a given MAC address Level LowState Src 233 State Scr To enter a MAC address into the filtering table234 Forwarding Layer 2 Forwarding To enter a MAC address into the switch’s forwarding table235 51. Setup Static Unicast MAC Forwarding window 236 To make a static ARP entry Gateway IP237 STP Switch Settings 238 Configure STP Groups To view the STP Port Settings table 240 Click the Link Aggregation link on the Configuration menu To configure a link aggregation group241 State Disabled Master PortMembers 242 Update Firmware from Server Use Configuration File on ServerTo update the switch’s firmware Select Upgrade Firmware from Server on the Maintenance menu Save Settings To Server To upload a settings file to the Tftp serverTo enable and configure Bootp or Dhcp on the switch Save History Log to Server To configure the BOOTP/DHCP Relay interface Count LimitRelay Time Threshold 245 DNS Relay Static Table Lookup Status Disabled DNS Relay StatePrimary Name Secondary Name Port Utilization Port Error Address The IP address of the domain name0.0 Above Applications Address Table248 Update Port Error Statistics249 Update Interval CRC ErrorRX Frames Undersize 72. Port Packet Analysis window 251 Browse MAC Address Sequentially To view the Gmrp Status table 253 Click the Browse Router Port link on the Applications menu 254 Click the Switch History link on the Applications menu 255 Browse the Routing Table 256 Default IP Address Table Address MaskJump 257 Ospf Link State Database Table 258 Link State ID Router ID Lsdb Type259 83. Ospf External Lsdb Table window 260 Click the Igmp Group Table link 261 Technical Specifications 262 Physical and Environmental 263 Commands 264 265 Runtime Switching Software Default Settings 266 Port in the blocking state does the following Blocking State267 Port in the listening state does the following Listening State268 Port in the learning state does the following Learning State269 Port in the forwarding state does the following Forwarding State270 Disabled port does the following Disabled State271 Spanning Tree Protocol Failure Troubleshooting STP272 Full/Half Duplex Mismatch 273 Unidirectional Link 274 Resource Errors Know where the root is locatedPacket Corruption Identifying a Data Loop Minimize the number of ports in the blocking state Know which links are redundant276 Impact of Layer 3 Switching 277 278 Brief Review of Bitwise Logical Operations Index Vlan Offices Norway Link Norway Registration Card