ZyXEL VES1724-56 User Guide - Page 359

Destination Cache

Page 359 highlights

Chapter 46 IPv6 Cache The following table describes the labels in this screen. Table 170 IPv6 Cache > Prefix List LABEL DESCRIPTION In-band/Out-of-band This is the Switch's interface to which the prefix is assigned or through which a neighbor can be reached. Index This is the index number of the entry. Prefix This is the subnet prefix and prefix length. vltime This displays the valid lifetime. It specifies how long (in seconds) a prefix is valid for on-link determination. It displays infinity when the time never expires. pltime This displays the preferred life time. It specifies how long (in seconds) that addresses generated from the prefix via stateless address autoconfiguration remain preferred. It displays infinity when the time never expires. onlink The preferred lifetime must be shorter than the valid lifetime. This displays whether the system can use this prefix for on-link determination (TRUE) or not (FALSE). A prefix is considered to be on-link when it is assigned to an interface on a link. It's used to determine if an address is on the Switch's subnet and can be reached directly without passing through a router. An on-link interface is directly connected to the Switch or connected through another switch. autonomous Expire If the Switch sends a packet to a host and the destination IP address is off-link, the packet will be sent to a next-hop (a router in the router list) for this destination. If the destination host is on-link, it is also the next hop. This displays whether the prefix can be used for stateless address auto configuration (TRUE) or not (FALSE). This displays how long (hhhmmmsss) will it be before the valid lifetime (vltime) expires. When an address is manually configured, it displays Never (never expires). 46.4 Destination Cache Click Management > IPv6 Cache in the navigation panel and then the Destination link to open this screen. Use this screen to view the mapping list of the next-hop address to an IPv6 destination address. The destination cache only shows these entries about destinations to which traffic has been sent recently. Figure 232 IPv6 Cache > Destination Cache VES1724-56 User's Guide 359

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Chapter 46 IPv6 Cache
VES1724-56 User’s Guide
359
The following table describes the labels in this screen.
46.4
Destination Cache
Click
Management
>
IPv6 Cache
in the navigation panel and then the
Destination
link to open
this screen. Use this screen to view the mapping list of the next-hop address to an IPv6 destination
address. The destination cache only shows these entries about destinations to which traffic has
been sent recently.
Figure 232
IPv6 Cache > Destination Cache
Table 170
IPv6 Cache > Prefix List
LABEL
DESCRIPTION
In-band/Out-of-band
This is the Switch’s interface to which the prefix is assigned or through which a
neighbor can be reached.
Index
This is the index number of the entry.
Prefix
This is the subnet prefix and prefix length.
vltime
This displays the valid lifetime. It specifies how long (in seconds) a prefix is valid for
on-link determination. It displays
infinity
when the time never expires.
pltime
This displays the preferred life time. It specifies how long (in seconds) that addresses
generated from the prefix via stateless address autoconfiguration remain preferred. It
displays
infinity
when the time never expires.
The preferred lifetime must be shorter than the valid lifetime.
onlink
This displays whether the system can use this prefix for on-link determination (
TRUE
)
or not (
FALSE
).
A prefix is considered to be on-link when it is assigned to an interface on a link. It’s
used to determine if an address is on the Switch’s subnet and can be reached directly
without passing through a router. An on-link interface is directly connected to the
Switch or connected through another switch.
If the Switch sends a packet to a host and the destination IP address is off-link, the
packet will be sent to a next-hop (a router in the router list) for this destination. If the
destination host is on-link, it is also the next hop.
autonomous
This displays whether the prefix can be used for stateless address auto configuration
(
TRUE
) or not (
FALSE
).
Expire
This displays how long (hhhmmmsss) will it be before the valid lifetime (vltime)
expires. When an address is manually configured, it displays
Never
(never expires).