Displaying ospf link state information – Brocade Communications Systems Layer 3 Routing Configuration ICX 6650 User Manual

Page 241

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Brocade ICX 6650 Layer 3 Routing Configuration Guide

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Displaying OSPF information

Displaying OSPF link state information

To display link state information, enter the show ip ospf database link-state command at any CLI
level.

Brocade#show ip ospf database link-state

Syntax: show ip ospf database link-state [advertise num] | [asbr] | [extensive] | [link-state-id

ip-addr] | [network] | [nssa] | [opaque-area] | [router] | [router-id ip-addr] |
[sequence-number num(Hex)] | [status num] | [summary]

The advertise num parameter displays the hexadecimal data in the specified LSA packet. The num
parameter identifies the LSA packet by its position in the router External LSA table. To determine
an LSA packet position in the table, enter the show ip ospf external-link-state command to display
the table. Refer to

“Displaying the data in an LSA”

on page 224 for an example.

The asbr option shows ASBR information.

The extensive option displays the LSAs in decrypted format.

NOTE

You cannot use the extensive option in combination with other display options. The entire database
is displayed.

The link-state-id ip-addr parameter displays the External LSAs for the LSA source specified by
IP-addr.

The network option shows network information.

The nssa option shows network information.

The opaque-area option shows information for opaque areas.

The router-id ip-addr parameter shows the External LSAs for the specified OSPF router.

The sequence-number num(Hex) parameter displays the External LSA entries for the specified
hexadecimal LSA sequence number.

The status num option shows status information.

The summary option shows summary information.

LS ID

The ID of the link-state advertisement from which the Layer 3 Switch learned this route.

Router

The router IP address.

Seq(hex)

The sequence number of the LSA. The OSPF neighbor that sent the LSA stamps it with a
sequence number to enable the Layer 3 Switch and other OSPF routers to determine which
LSA for a given route is the most recent.

Chksum

A checksum for the LSA packet, which is based on all the fields in the packet except the age
field. The Layer 3 Switch uses the checksum to verify that the packet is not corrupted.

Type

The route type, which is always EXTR (external).

TABLE 40

CLI display of OSPF external link state information (Continued)

Field

Definition

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