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DES-7200 Configuration Guide Chapter 1 Protocol-Independent
Configuration
1-2
Route source Default management distance
Directly connected networks 0
Static route 1
OSPF route 110
ISIS route 115
RIP route 120
Unreachable route 255
Note
The static route redistribution shall be configured if the static routes are
advertised by the dynamic routing protocols such as RIP and OSPF.
When a port is “down”, all routes to that port will disappear from the routing table.
In addition, when DES-7200 product fails to find the forwarding route to the
next-hop address, the static route will also disappear from the routing table.
When the specified VRF static routes are added to the corresponding VRF, if the
egress is specified at the same time, but the VRF of the egress does not match
the specified VRF, the addition will fail. If no VRF is specified, it is added to the
global routing table by default.
By default, the weight of static route is 1. To view the static routes of non-default
weight, execute the show ip route weight command. When there are load
balanced routes to an IP address, the switch will assign traffic by their weights.
The higher the weight of a route is, the more the route forwards. Router WCMP
limit is 32, while the switch WCMP limit is related to product model because the
weights supported by various chips are different. For the detailed information
about the route weight value of specific model, please refer to the product
specification paper.
When the sum of load-balancing route weights exceeds WCMP limit, the
exceeded routes will not take effect. For example, if the WCMP limit on a device is
8, only one static route configuration is effective:
DES-7200(config)#ip route 10.0.0.0 255.0.0.0 172.0.1.2 weight 6
DES-7200(config)#ip route 10.0.0.0 255.0.0.0 172.0.1.4 weight 6
DES-7200(config)#show ip route 10.0.0.0
Routing entry for 10.0.0.0/8
Distance 1, metric 0
Routing Descriptor Blocks:
*172.0.1.2, generated by "static"
DES-7200(config)#show ip route weight
------------[distance/metric/weight]-----------