Intel 480T, Руководство пользователя

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C H A P T E R 1 0 IP Unicast Routing
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To change the relative route priority, use the following command:
config iproute priority [rip | bootp | icmp |
static | ospf-intra | ospf-inter | ospf-as-
external | ospf-extern1 | ospf-extern2] <priority>
IP Multinetting
IP multinetting is used in many legacy IP networks when there is
need to overlap multiple subnets onto the same physical segment.
Though it can be a critical element in a transition strategy, due to the
additional constraints introduced in troubleshooting and bandwidth,
it is best to use multinetting as a transitional tactic, and not as a long-
term network design strategy.
On the switch, each subnet is represented by a different VLAN, and
each of those VLANs has its own IP address. All of the VLANs
share the same physical port(s). The switch routes IP traffic from
one subnet to another, all within the same physical port(s).
The following rules and comments apply when you are configuring
IP multinetting:
• Multiple VLANs share the same physical ports; each of the
VLANs is configured with an IP address.
• A maximum of four subnets (or VLANs) on multinetted ports is
recommended.
• All VLANs used in the multinetting application must share the
same port assignment.
• One VLAN is configured to use an IP protocol filter. This is
considered the "primary" VLAN interface for the multinetted
group.
• The "secondary" multinetted VLANs can be exported using the
export direct
command.
OSPFExtern2 3300
BOOTP 5000
Table 42: Relative Route Priorities (continued)
Route Origin Priority