Administrator Guide

● An unplanned restart occurs when an unplanned event causes the active RPM to switch to the
backup RPM, such as when an active process crashes, the active RPM is removed, or a power failure
happens. During an unplanned restart, OSPF sends out a Grace LSA when the backup RPM comes
online.
By default, both planned and unplanned restarts trigger an OSPFv3 graceful restart. Selecting one or the
other mode restricts OSPFv3 to the single selected mode.
ipv6 ospf area
Enable IPv6 OSPF on an interface.
Z-Series
Syntax
ipv6 ospf process id areaarea id
To disable OSPFv6 routing for an interface, use the no ipv6 ospf process-id area area-id
command.
Parameters
process-id Enter the process identification number.
area area-id Specify the OSPF area. The range is from 0 to 65535.
Defaults none
Command Modes INTERFACE
Command
History
Version Description
9.1.(0.0) Introduced on the S4810 and Z9000.
8.3.19.0 Introduced on the S4820T.
7.4.1.0 Introduced on the E-Series and C-Series.
ipv6 ospf authentication
Configure an IPsec authentication policy for OSPFv3 packets on an IPv6 interface.
Z-Series
Syntax
ipv6 ospf authentication {null | ipsec spi number {MD5 | SHA1} [key-
encryption-type] key}}
Parameters
null Causes an authentication policy configured for the area to not be inherited on the
interface.
ipsec spi number Security Policy index (SPI) value that identifies an IPsec security policy. The range
is from 256 to 4294967295.
MD5 | SHA1
Authentication type: Message Digest 5 (MD5) or Secure Hash Algorithm 1 (SHA-1).
key-encryption-
type
(OPTIONAL) Specifies if the key is encrypted.
Valid values: 0 (key is not encrypted) or 7 (key is encrypted).
key
Text string used in authentication.
For MD5 authentication, the key must be 32 hex digits (non-encrypted) or 64 hex
digits (encrypted).
Open Shortest Path First (OSPFv2 and OSPFv3) 915