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DGS-3312SR Gigabit Layer 3 Switch Field Type Description A quick classification of the router link. One of the following: Type Description Point-to-point connection to another router. Connection to a transit network. Connection to a stub network. Virtual link. Link ID Link Data Identifies the object that this router link connects to. Value depends on the link's Type. When connecting to an object that also originates a link state advertisement (i.e. another router or a transit network) the Link ID is equal to the neighboring advertisement's Link State ID. This provides the key for looking up an advertisement in the link state database. Type Link ID Neighboring router's Router ID. IP address of Designated Router. IP network/subnet number. Neighboring router's Router ID Contents again depend on the link's Type field. For connections to stub networks, it specifies the network's IP address mask. For unnumbered point-to-point connection, it specifies the interface's MIB-II ifIndex value. For other link types it specifies the router's associated IP interface address. This latter piece of information is needed during the routing table build process, when calculating the IP address of the next hop. No. of TOS The number of different Type of Service (TOS) metrics given for this link, not counting the required metric for TOS 0. If no additional TOS metrics are given, this field should be set to 0. TOS 0 Metric Field The cost of using this router link for TOS 0. Description TOS IP Type of Service that this metric refers to. Metric The cost of using this outbound router link, for traffic of the specified TOS. For each link, separate metrics may be specified for each Type of Service (TOS). The metric for TOS 0 must always be included, and was discussed above. Metrics for non-zero TOS are described below. Note that the cost for non-zero TOS values that are not specified defaults to the TOS 0 cost. Metrics must be listed in order of increasing TOS encoding. For example, the metric for TOS 16 must always follow the metric for TOS 8 when both are specified. Network Links Advertisements Network links advertisements are Type 2 link state advertisements. A network links advertisement is originated for each transit network in the area. A transit network is a multi-access network that has more than one attached router. The network links advertisement is originated by the network's Designated router. The advertisement describes all routers attached to the network, including the Designated Router itself. The advertisement's Link State ID field lists the IP interface address of the Designated Router. 107

Section	Page
Manual	1
	3
	3
	3
Table of Contents	3
About This Manual	9
Intended Readers	9
Typographical Conventions	9
	9
	9
	9
	9
Bold font	9
Notes, Notices, and Cautions	9
Safety Instructions	10
Safety Cautions	10
General Precautions for Rack-Mountable Products	11
Protecting Against Electrostatic Discharge	12
Introduction	14
	14
	14
	14
	14
Switch Description	14
Features	14
Front Panel Components	14
LED Indicators	14
Stacking LED Indicators	14
Rear Panel Description	14
Plug-in Modules	14
Switch Stacking	14
Management Options	14
Switch Description	14
Features	14
Front-Panel Components	15
LED Indicators	15
Stacking LED Indicators	16
Rear Panel Description	17
RPS Connector	17
Plug-in Modules	17
DEM-340T 1000BASE-T Module	17
DEM-340MG SFP (Mini GBIC) Module	18
DEM-540 IEEE 1394 Stacking Module	18
Switch Stacking	18
	19
Restrictions and Cautions for Stacking	19
Management Options	19
	19
Web-based Management Interface	19
Command Line Console Interface through the Serial Port or Telnet	19
SNMP-Based Management	19
Installation	21
	21
	21
	21
	21
Package Contents	21
Before You Connect to the Network	21
Installing the Switch without a Rack	21
Installing the Switch in a Rack	21
Connecting Stacked Switch Groups	21
Configuring a Switch Group for Stacking	21
External Redundant Power System	21
Connecting the Console Port	21
Password Protection	21
SNMP Settings	21
IP Address Assignment	21
Connecting Devices to the Switch	21
Package Contents	21
Before You Connect to the Network	21
Installing the Switch without the Rack	21
Installing the Switch in a Rack	22
Mounting the Switch in a Standard 19\	23
Connecting Stacked Switch Groups	23
Configuring a Switch Group for Stacking	25
Unit ID Display for Switches in a Switch Stack	25
External Redundant Power System	26
Connecting the Console Port	27
Password Protection	28
SNMP Settings	29
Traps	30
MIBs	30
IP Address Assignment	30
Connecting Devices to the Switch	31
Basic Switch Management	32
	32
	32
	32
	32
Before You Start	32
General Deployment Strategy	32
Web-based User Interface	32
Basic Setup	32
Switch Information	32
Switch IP Settings	32
Security IP Management Stations	32
User Accounts Management	32
Saving Changes	32
Factory Reset	32
Restart System	32
Advanced Settings	32
Switch Stack Management	32
Before You Start	32
General Deployment Strategy	32
VLAN Setup	33
Defining Static Routes	33
Web-based User Interface	33
Areas of the User Interface	33
Login to Web Manager	34
Web Pages and Folders	35
Basic Setup	35
Switch Information	35
Switch IP Settings	36
Setting the Switch’s IP Address using the Console	37
Security IP Management Stations Configuration	37
User Account Management	39
Admin and User Privileges	39
Save Changes	40
Factory Reset	40
Restart System	41
Advanced Settings	42
Switch Stack Management	43
Configure Stacking	44
Basic Configuration	47
	47
	47
	47
	47
Switch Information	47
IP Address	47
Advanced Settings	47
Port Configuration	47
Port Description	47
Port Mirroring	47
Traffic Control	47
Link Aggregation	47
LACP Port Settings	47
Port Access Entity	47
802.1X Authenticator Settings	47
PAE System Control	47
802.1X Capability Settings	47
RADIUS Server	47
IGMP	47
IGMP Snooping	47
Static Router Ports Entry	47
Spanning Tree	47
STP Switch Settings	47
STP Port Settings	47
Forwarding & Filtering	47
Unicast Forwarding	47
Multicast Forwarding	47
VLANs	47
Static VLAN Entry	47
GVRP Setting	47
QoS	47
802.1p Default Priority	47
802,1p User Priority	47
QoS Output Scheduling	47
Traffic Segmentation	47
Bandwidth Control	47
MAC Notification	47
Global Settings	47
Port Settings	47
System Log Server	48
Port Security	48
SNTP Setting	48
Time Setting	48
Time Zone and DST	48
Access Profile Table	48
Switch Information	48
IP Address	48
	49
Setting the Switch’s IP Address using the Console	49
Advanced Settings	51
Port Configuration	52
Port Description	55
Port Mirroring	55
Traffic Control	56
Link Aggregation	57
LACP Port Settings	59
Port Access Entity	60
802.1X Authenticator Settings	62
PAE System Control	64
802.1X Capability Settings	64
RADIUS Server	64
RADIUS Server	65
IGMP	65
IGMP Snooping	66
Static Router Ports	67
Spanning Tree	68
	68
802.1w Rapid Spanning Tree	68
Port Transition States	69
Edge Port	69
P2P Port	69
802.1d/802.1w Compatibility	69
STP Switch Settings	69
STP Port Settings	71
Forwarding & Filtering	72
Unicast Forwarding	73
Multicast Forwarding	73
VLANs	74
	74
VLANs in Layer 2	74
Layer 3-Based VLANs	74
Planning VLAN Layout	75
Assigning IP Network Addresses and Subnet Masks to VLANs	75
Understanding 802.1Q VLANs	75
IEEE 802.1Q VLANs	75
802.1Q VLAN Packet Forwarding	75
802.1Q VLAN Tags	76
Port VLAN ID	77
Tagging and Untagging	77
Ingress Filtering	78
802.1Q Static VLANs	78
802.1Q Port Settings	81
QoS	82
802.1p Default Priority	82
802.1p User Priority	83
QoS Output Scheduling Configuration	84
Traffic Segmentation	84
Bandwidth Control	85
MAC Notification	86
MAC Notification Global Settings	87
MAC Notification Port Settings	88
System Log Server	88
Port Security	89
SNTP Setting	91
Time Setting	91
Time Zone and DST Settings	92
Access Profile Table	93
Advanced Configuration	104
	104
	104
	104
	104
L3 Global Advanced Settings	104
IP Interface Settings	104
MD5 Key Settings	104
Route Redistribution Settings	104
Static/Default Route Settings	104
Static ARP Settings	104
RIP	104
RIP Global Setting	104
RIP Interface Settings	104
OSPF	104
OSPF General Setting	104
OSPF Area ID Settings	104
OSPF Interface Settings	104
OSPF Virtual Interface Settings	104
OSPF Area Aggregation Settings	104
OSPF Host Route Settings	104
DHCP/BOOTP Relay	104
DHCP/BOOTP Relay Information	104
DHCP/BOOTP Relay Settings	104
DNS Relay	104
DNS Relay Information	104
DNS Relay Static Settings	104
VRRP	104
VRRP Configuration	104
VRRP Interface Settings	104
IP Multicast	104
IGMP Interface Settings	104
DVMRP	104
DVMRP Global Setting	104
DVMRP Interface Settings	104
PIM	104
PIM-DM Global Setting	104
PIM-DM Interface Settings	104
L3 Global Advanced Settings	105
IP Interface Settings	105
	106
Introduction to OSPF	106
Link-State Algorithm	106
Shortest Path Algorithm	106
OSPF Cost	106
Shortest Path Tree	108
Areas and Border Routers	109
Link-State Packets	109
OSPF Authentication	110
Message Digest Authentication (MD-5)	110
Simple Password Authentication	110
Backbone and Area 0	110
Virtual Links	110
Areas Not Physically Connected to Area 0	110
Partitioning the Backbone	110
Neighbors	111
Adjacencies	111
Designated Router Election	111
Building Adjacency	111
Adjacencies on Point-to-Point Interfaces	112
OSPF Packet Formats	112
OSPF Packet Header	112
Hello Packet	113
Database Description Packet	114
Link-State Request Packet	115
Link-State Update Packet	116
Link-State Acknowledgment Packet	116
Link-State Advertisement Formats	117
Link State Advertisement Header	117
Router Links Advertisements	119
For each link, separate metrics may be specified for each Type of Service (TOS). The metric for TOS 0 must always be included, and was discussed above. Metrics for non-zero TOS are described below. Note that the cost for non-zero TOS values that are no	120
Network Links Advertisements	120
Summary Link Advertisements	121
Autonomous Systems External Link Advertisements	122
MD5 Key Settings	122
Route Redistribution Settings	124
Static/Default Route Settings	125
Static ARP Settings	126
RIP	126
RIP Global Setting	126
RIP Interface Settings	127
OSPF	128
OSPF General Setting	128
OSPF Area ID Settings	128
OSPF Interface Settings	130
OSPF Virtual Interface Settings	131
OSPF Area Aggregation Settings	133
OSPF Host Route Settings	134
DHCP/Bootp Relay	134
DHCP/Bootp Relay Information	135
DHCP/Bootp Relay Settings	135
DNS Relay	135
DNS Relay Information	136
DNS Relay Static Settings	136
VRRP	137
VRRP Configuration	137
VRRP Interface Settings	137
VRRP Interface Settings	139
VRRP Interface Entry Display	140
IP Multicast	141
IGMP Interface Settings	141
IGMP Interface Configuration	143
DVMRP	144
DVMRP Global Setting	144
DVMRP Interface Settings	144
PIM	145
PIM-DM Global Setting	145
PIM-DM Interface Settings	145
Security	147
	147
	147
	147
	147
Trusted Host	147
Secure Socket Layer (SSL)	147
Download Certificate	147
Configuration	147
Secure Shell (SSH)	147
SSH Configuration	147
SSH Algorithm	147
SSH User Authentication	147
Access Authentication Control	147
Policy and Parameters	147
Application Authentication Settings	147
Authentication Server Group	147
Authentication Server Host	147
Login Method Lists	147
Enable Method Lists	147
Local Enable Password	147
Enable Admin	147
Trusted Host	147
Secure Socket Layer (SSL)	148
Download Certificate	148
Configuration	149
Secure Shell (SSH)	150
SSH Configuration	151
SSH Algorithm	152
SSH User Authentication	154
Access Authentication Control	154
Policy & Parameters	156
Application Authentication Settings	157
Authentication Server Group	157
Authentication Server Host	158
Login Method Lists	159
Enable Method Lists	162
Local Enable Password	163
Enable Admin	164
Management	166
	166
	166
	166
	166
User Accounts	166
SNMPV3	166
SNMP User Table	166
SNMP View Table	166
SNMP Group Table	166
SNMP Community Table	166
SNMP Host Table	166
SNMP Engine ID	166
User Accounts	166
	167
Admin and User Privileges	167
SNMPV3	167
SNMP User Table	168
SNMP User Table Display	168
SNMP User Table Configuration	169
SNMP View Table	170
SNMP View Table Configuration	170
SNMP Group Table	171
SNMP Group Table Display	171
SNMP Group Table Configuration	172
SNMP Community Table	172
SNMP Host Table	173
SNMP Host Table Configuration	174
SNMP Engine ID	174
Monitoring	176
	176
	176
	176
	176
Stack Information	176
Port Utilization	176
CPU Utilization	176
Packets	176
Received (RX)	176
UMB_cast (RX)	176
Transmitted (TX)	176
Errors	176
Received (RX)	176
Transmitted (TX)	176
Size	176
Packet Size	176
MAC Address	176
Switch History	176
IGMP Snooping	176
Browse Router Port	176
VLAN Status	176
Session Table	176
Layer 3 Feature	176
Browse IP Address Table	176
Browse Routing Table	176
Browse ARP Table	176
Browse IP Multicast Forwarding Table	176
Browse IGMP Group Table	176
OSPF Monitor	176
Browse OSPF LSDB Table	176
Browse OSPF Neighbor Table	176
Browse OSPF Virtual Neighbor Table	176
DVMRP Monitor	176
Browse DVMRP Routing Table	176
Browse DVMRP Neighbor Table	176
Browse DVMRP Routing Next Hop Table	176
PIM Monitor	176
Browse PIM Neighbor Table	176
Stack Information	177
Port Utilization	179
CPU Utilization	181
Packets	181
Received Packets	182
Received Unicast/Multicast/Broadcast Packets	184
Transmitted Packets	186
Errors	188
Received Errors	188
Transmitted Errors	189
Size	192
Packet Size	192
MAC Address	194
Switch History	196
IGMP Snooping Table	197
Browser Router Port	197
VLAN Status	198
Session Table	199
Layer 3 Feature	200
Browse IP Address	200
Browse Routing Table	200
Browse ARP Table	201
Browse IP Multicast Forwarding Table	202
Browse IGMP Group Table	203
OSPF Monitor	203
Browse OSPF LSDB Table	203
Browse OSPF Neighbor Table	204
Browse OSPF Virtual Neighbor Table	205
DVMRP Monitor	205
Browse DVMRP Routing Table	205
Browse DVMRP Neighbor Address Table	206
Browse DVMRP Routing Next Hop Table	206
PIM Monitor	206
Browse PIM Neighbor Address Table	207
Maintenance	208
	208
	208
	208
	208
TFTP Services	208
Download Firmware	208
Download Configuration File	208
Save Settings	208
Save History Log	208
PING Test	208
Save Changes	208
Factory Reset	208
Restart System	208
Logout	208
TFTP Services	208
Download Firmware	208
Download Configuration File	209
Save Settings	209
Save History Log	209

Match case Limit results 1 per page

DGS-3312SR Gigabit Layer 3 Switch

Field

Description

Type

A quick classification of the router link. One of the following:

Type

Description

Point-to-point connection to another router.

Connection to a transit network.

Connection to a stub network.

Virtual link.

Link ID

Identifies the object that this router link connects to. Value

depends on the link’s Type. When connecting to an object that

also originates a link state advertisement (i.e. another router or a

transit network) the Link ID is equal to the neighboring

advertisement’s Link State ID.

This provides the key for looking

up an advertisement in the link state database.

Type

Link ID

Neighboring router’s Router ID.

IP address of Designated Router.

IP network/subnet number.

Neighboring router’s Router ID

Link Data

Contents again depend on the link’s Type field. For connections to

stub networks, it specifies the network’s IP address mask. For

unnumbered point-to-point connection, it specifies the interface’s

MIB-II ifIndex value. For other link types it specifies the router’s

associated IP interface address. This latter piece of information is

needed during the routing table build process, when calculating

the IP address of the next hop.

No. of TOS

The number of different Type of Service (TOS) metrics given for

this link, not counting the required metric for TOS 0. If no

additional TOS metrics are given, this field should be set to 0.

TOS 0 Metric

The cost of using this router link for TOS 0.

Field

Description

TOS

IP Type of Service that this metric refers to.

Metric

The cost of using this outbound router link, for traffic of the

specified TOS.

For each link, separate metrics may be specified for each Type of Service (TOS). The metric for TOS 0 must always be

included, and was discussed above. Metrics for non-zero TOS are described below. Note that the cost for non-zero TOS

values that are not specified defaults to the TOS 0 cost. Metrics must be listed in order of increasing TOS encoding. For

example, the metric for TOS 16 must always follow the metric for TOS 8 when both are specified.

Network Links Advertisements

Network links advertisements are Type 2 link state advertisements. A network links advertisement is originated for each

transit network in the area. A transit network is a multi-access network that has more than one attached router. The network

links advertisement is originated by the network’s Designated router. The advertisement describes all routers attached to

the network, including the Designated Router itself. The advertisement’s Link State ID field lists the IP interface address of

the Designated Router.

107