Reference Guide

Version 7.6.1.0 Introduced on the S-Series.
Version 7.5.1.0 Introduced on the C-Series.
pre-Version
6.1.1.1
Introduced on the E-Series.
Usage
Information
The following describes the show ip ospf process-id database external
command shown in the following example.
Field Description
LS Age Displays the LSA’s age.
Options 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.
Checksum Displays the Fletcher checksum of the LSA’s complete
contents.
Length Displays the length in bytes of the LSA.
Network Mask Displays the network mask implemented on the area.
Metrics Type Displays the external type.
TOS Displays the Type of Service (TOS) options. Option 0 is the
only option.
Metric 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 0.0.0.0,
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.
Example
Dell#show ip ospf 1 database external
1202
Open Shortest Path First (OSPFv2 and OSPFv3)