ZyXEL Communications MSC1000G Series, Руководство пользователя

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Chapter 9 Subscriber Port Setup Screens
Management Switch Card User’s Guide
278
Figure 177
IPB Route
The following table describes the labels in this screen.
Table 127
IPB Route
LABEL DESCRIPTION
Use the top section to create routing table entries manually.
Domain Select the domain to whose routing table you want to add this entry.
Route IP
NetMask
Enter the IP address and the number of bits in the subnet mask that define the range of IP
addresses to which this entry applies. If the destination IP address of a packet is in this range,
the MSC forwards the frame to the specified edge router.
Nexthop Enter the IP address to which the MSC forwards frames if the destination IP address of a packet
is in the specified range.
If this IP address corresponds to an edge router in the edge router screen (see Section 9.17 on
page 270 ), the MSC uses the associated VLAN ID. In addition,
• If the edge router is in the same domain as the entry, the entry is used for upstream traffic.
• If the edge router is in a different domain than the entry, the entry is used for downstream
traffic.
If the specified edge router is not set up in the edge router screen, the MSC uses the entry for
downstream traffic and does not change the VLAN ID.
Metric The metric represents the “cost” of transmission for routing purposes. IP routing uses hop
count as the measurement of cost, with a minimum of 1 for directly-connected networks. Select
the number that approximates the cost for this link The number need not be precise, but it
must be between 1 and 15. In practice, 2 or 3 is usually a good number.
If two entries have the same metric, the MSC uses the one with the lower IP address.
Change Pbit If you want to set the IEEE 802.1p priority value of incoming frames, select the check box and
use the drop-down list box to select the priority value (0 to 7) to use.
Apply Click Apply to create the routing table entry. It is then displayed in the summary table at the
bottom of the screen.
Clicking Apply saves your changes to the MSC’s volatile memory. The MSC loses these changes
if it is turned off or loses power, so use the Config Save link on the navigation panel to save
your changes to the non-volatile memory when you are done configuring.
New Click New to set the screen to configure a new entry.