Chapter 22 IPv6
GS1920v2 Series User’s Guide
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22.3  IPv6 Global Setup
Use this screen to configure the global IPv6 settings. Click SYSTEM > IPv6 > IPv6 Global Setup to display 
the screen as shown next.
Figure 84   SYSTEM > IPv6 > IPv6 Global Setup
The following table describes the labels in this screen.
Preferred 
Lifetime
This field displays how long (in seconds) that the global address remains preferred.
Valid 
Lifetime
This field displays how long (in seconds) that the global address is valid.
DNS This field displays the DNS server address assigned by the DHCPv6 server.
Domain List This field displays the address record when the Switch queries the DNS server to resolve domain 
names.
Restart 
DHCPv6 Client
Click Restart to send a new DHCP request to the DHCPv6 server and update the IPv6 address and 
DNS information for this interface.
Table 38   SYSTEM > IPv6 > IPv6 Status > IPv6 Interface Details (continued)
LABEL DESCRIPTION
Table 39   SYSTEM > IPv6 > IPv6 Global Setup
LABEL DESCRIPTION
IPv6 Hop Limit Specify the maximum number of hops (from 1 to 255) in router advertisements. This is the 
maximum number of hops on which an IPv6 packet is allowed to transmit before it is discarded by 
an IPv6 router, which is similar to the TTL field in IPv4.
ICMPv6 Rate 
Limit Bucket 
Size
Specify the maximum number of ICMPv6 error messages (from 1 to 200) which are allowed to 
transmit in a given time interval. If the bucket is full, subsequent error messages are suppressed.
ICMPv6 Rate 
Limit Error 
Interval
Specify the time period (from 0 to 2147483647 milliseconds) during which ICMPv6 error messages 
of up to the bucket size can be transmitted. 0 means no limit.
Apply Click Apply to save your changes to the Switch’s run-time memory. The Switch loses these 
changes if it is turned off or loses power, so use the Save link on the top navigation panel to save 
your changes to the non-volatile memory when you are done configuring.
Cancel Click Cancel to begin configuring this screen afresh.
Clear Click Clear to reset the fields to the factory defaults.