class RouteTable Base class for a routing table. More... Contains pure virtuals Definition #include <rt_tab_base.hh> Template form RouteTable<class A> Inherited by ExportTable, ExtIntTable, MergedTable, OriginTable, RedistTable, RegisterTable List of all Methods

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Public Methods

•  RouteTable (const string& name)
• virtual  ~RouteTable ()
• virtual int  add_route (const IPRouteEntry<A> &route, RouteTable *caller)
• virtual int  delete_route (const IPRouteEntry<A> *, RouteTable *caller)
• virtual const IPRouteEntry<A> * lookup_route (const IPNet<A> &net) const
• virtual const IPRouteEntry<A> * lookup_route (const A &addr) const
• virtual RouteRange<A> * lookup_route_range (const A &addr) const
• void  set_next_table (RouteTable* next_table)
• RouteTable * next_table ()
• virtual RouteTable * parent ()
• virtual int  type () const
• const string&  tablename () const
• virtual void  replumb (RouteTable *old_parent, RouteTable *new_parent)
• virtual string  str () const
• virtual void  flush ()

Protected Members

• string _tablename
• RouteTable* _next_table

Detailed Description

This is the base class for a routing table. A RIB consists of a tree of RouteTables that take routes from routing protocols and merge them together so that routes that emerge from the last table are the best routes available, and have nexthop information that is for an immediate neighbor of this router. See the RIB design document for an overview of how RouteTable are plumbed together to form a RIB.

All RouteTables that form the RIB are derived from this base class.

RouteTables take routing changes in from one or more parents, and pass on those changes to the _next_table if the change is for the best of the alternative routes.

RouteTables take route lookup requests from their _next_table, and pass on those requests to their parents. If more than one parent has a response, only the best is returned as the answer.

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