Cabletron Systems SSR-GLX19-02, Руководство пользователя

Страница: 408 / 495

Chapter 20: Checking the Status of Routing Tables
408 CoreWatch User’s Manual
Backup Designated
Router Lists the IP address of the backup designated router.
Number of Events Indicates how many times the SPF interface has changed
its state or that an error has occurred.
Authentication Key Identifies the interface's authentication key. If the value of
the Authentication Type field is simple, the key size is
restricted to 8 bytes.
When read, this field's value always returns an octet string
of length zero.
Status Indicates the status of the interface.
Multicast Forwarding Indicates the way multicast packets are forwarded on the
interface. Possible values indicate that such packets are
blocked (not forwarded), forwarded as data-link
multicasts, or forwarded as data-link unicasts.
Data link multicasting is not meaningful on point-to-point
and NBMA interfaces, and setting this field to 0 effectively
disables all multicast forwarding.
Truth Value Indicates whether demand OSPF procedures (hello
suppression to full neighbors and setting the DoNotAge
flag on propagated link-state advertisements) should be
performed on the interface.
Authentication Type Indicates the type of authentication that is configured for
the interface. The authentication type can be one of the
following:
• Simple – signifies that the authentication method the
interface uses is a simple password in which an
authentication key of up to 8 characters is included in
the packet. If this authentication method was chosen
when the OSPF interface was created, a key-chain
identifier should also have been specified.
• MD5 – signifies that the interface uses the MD5
algorithm to create a crypto-checksum of an OSPF
packet and an authentication key of up to 16
characters.
• None – signifies no authentication method is
associated with the interface.
Table 59. OSPF Interface table fields (Continued)
Field Description