H3C S9500 Series Operation Manual page 167

Operation Manual – Recursive Routing
H3C S9500 Series Routing Switches
Chapter 1 Recursive Routing Configuration
When configuring recursive routing, go to these sections for information you are
interested in:
Recursive Routing Overview
Recursive Routing Configuration
Note:
The term "router" or the router icon in this document refers to a router in a generic
sense or an S9500 switch running routing protocols.
1.1 Recursive Routing Overview
Every route entry must have its next hop address. For a common route, its next hop
address is within the network segment to which the router is directly connected; for a
route requiring recursion, its next hop address is not directly connected. During route
forwarding, this non-directly connected next hop address must be recursion-processed
once or several times to find out a directly connected next hop address to enable L2
path searching. A recursive route can be a static route or BGP route. Recursive routing
can make route entries flexible, independent of a specific interface.
1.2 Recursive Routing Configuration
Follow these steps to configure recursive routing:
Enter system view
Enable recursive routing
Note:
Currently, only 2-layer recursive routing is supported.
To do...
system-view
route-rely [ bgp | static ]
Chapter 1 Recursive Routing Configuration
Use the command...
1-1
Remarks
—
By default, both routes
learned by the BGP and
static routes support
recursive routing.