Users Guide
Version Description
7.8.1.0 Added support for Multi-Process OSPF.
7.6.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series.
pre-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 Identies the router ID of the LSA’s originating router.
LS Seq Number Identies 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 Identies the address of the forwarding router. Data trac is forwarded to this router. If
the forwarding address is 0.0.0.0, data trac is forwarded to the originating router.
External Route Tag Displays the 32-bit eld attached to each external route. The OSPF protocol does not use
this eld, but you can use the eld for external route management.
Example
Dell# show ip ospf 1 database external
OSPF Router with ID (20.20.20.5) (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: 12.12.12.2
Advertising Router: 20.31.3.1
LS Seq Number: 0x80000007
Checksum: 0x4cde
1120 Open Shortest Path First (OSPFv2 and OSPFv3)