Dell Command Line Reference Guide for the S4048–ON System


show ip ospf database external

Display information on the AS external (type 5) LSAs.

show ip ospf [process-id | vrf vrf-name ] database external [link-state-id] [adv-router ip-address]
Enter the OSPF Process ID to show a specific process. If no Process ID is entered, command applies only to the first OSPF process.
vrf vrf-name
Enter the keyword vrf followed by the name of the VRF to view information on AS external LSAs corresponding to the OSPF processes that are tied to a specific VRF.
(OPTIONAL) Specify LSA ID in dotted decimal format. The LSA ID value depends on the LSA type, and it can be one of the following:
  • the network’s IP address for Type 3 LSAs or Type 5 LSAs
  • the router’s OSPF router ID for Type 1 LSAs or Type 4 LSAs
  • the default destination ( for Type 5 LSAs
adv-router ip-address
(OPTIONAL) Enter the keywords adv-router and the ip-address to display only the LSA information about that router.
Command Modes
  • EXEC
  • EXEC Privilege
Command History

This guide is platform-specific. For command information about other platforms, see the relevant Dell EMC Networking OS Command Line Reference Guide.

Introduced on the S6010-ON and S4048T-ON.
Introduced on the S3148.
Introduced on the S6100-ON.
Introduced on the S3100 series.
Introduced on the Z9100-ON.
Introduced on the S4048-ON.
Introduced on the S3048-ON.
Introduced on the S6000-ON.
Added support for VRF.
Introduced on the Z9500.
Introduced on the S6000.
Introduced on the S4820T.
Introduced on the Z9000.
Introduced on the S4810.
Added support for Multi-Process OSPF.
Introduced on the S-Series.
Introduced on the C-Series.
Introduced on the E-Series.
Usage Information
The following describes the show ip ospf process-id database external command shown in the following example.
LS Age
Displays the LSA’s age.
Displays the optional capabilities available on router. The following options can be found in this item:
  • TOS-capability or No TOS-capability is displayed depending on whether the router can support Type of Service.
  • DC or No DC is displayed depending on whether the originating router can support OSPF over demand circuits.
  • E or No E is displayed on whether the originating router can accept AS External LSAs.
LS Type
Displays the LSA’s type.
Link State ID
Displays the Link State ID.
Advertising Router
Identifies the router ID of the LSA’s originating router.
LS Seq Number
Identifies the link state sequence number. This number enables you to identify old or duplicate LSAs.
Displays the Fletcher checksum of the LSA’s complete contents.
Displays the length in bytes of the LSA.
Network Mask
Displays the network mask implemented on the area.
Metrics Type
Displays the external type.
Displays the Type of Service (TOS) options. Option 0 is the only option.
Displays the LSA metric.
Forward Address
Identifies the address of the forwarding router. Data traffic is forwarded to this router. If the forwarding address is, data traffic is forwarded to the originating router.
External Route Tag
Displays the 32-bit field attached to each external route. The OSPF protocol does not use this field, but you can use the field for external route management.
DellEMC# show ip ospf 1 database external

    OSPF Router with ID ( (Process ID 1)

         Type-5 AS External

LS age: 612
Options: (No TOS-capability, No DC, E)
LS type: Type-5 AS External
Link State ID:
Advertising Router:
LS Seq Number: 0x80000007
Checksum: 0x4cde
Length: 36
Network Mask: /32
     Metrics Type: 2
     TOS: 0
     Metrics: 25
     Forward Address:
     External Route Tag: 43

LS age: 1868
Options: (No TOS-capability, DC)
LS type: Type-5 AS External
Link State ID:
Advertising Router:
LS Seq Number: 0x80000005
Checksum: 0xa00e
Length: 36
Network Mask: /24
     Metrics Type: 2
     TOS: 0
     Metrics: 1
     Forward Address:
     External Route Tag: 701
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