class ResolvedIPRouteEntry

Extended RouteEntry, used by ExtIntTable. More...

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Detailed Description

This class stored an extended routing table entry, for use in ExtIntTable. When a route with a non-local nexthop arrives, the ExtIntTable attempts to discover a local nexthop by finding the route that packets to the non-local nexthop would use. This entry is used to store the resulting route, with a local nexthop, and with links to the parent routes that were used to provide the information in this route entry.

This is a template class, where A is either a the IPv4 class or the IPv6 class.

typedef multimap<const IPRouteEntry<A>* , ResolvedIPRouteEntry<A>* > RouteBackLink


 ResolvedIPRouteEntry (const IPNet<A>& net, RibVif* vif, NextHop* nexthop, const Protocol& protocol, uint32_t metric, const IPRouteEntry<A>* igp_parent, const IPRouteEntry<A>* egp_parent)


Constructor for IPRouteEntry.


netthe Subnet (address and mask) of the routing table entry.
vifthe Virtual Interface on which packets matching this routing table entry should be forwarded.
nexthopthe NextHop router to which packets matching this entry should be forwarded. This should be a local nexthop.
protocolthe routing protocol that originated this route.
metricthe routing protocol metric for this route.
igp_parentthe route entry used to resolve the non-local nexthop in the egp_parent into a local nexthop.
egp_parentthe orginal route entry with a non-local nexthop.
const IPRouteEntry<A>*  igp_parent ()



Get the igp_parent.

Returns: the IGP parent route entry that was used to resolve the EGP parent route entry's non-local nexthop into a local nexthop.

const IPRouteEntry<A>*  egp_parent ()



Get the EGP parent.

Returns: the EGP parent, which is the original route entry that had a non-local nexthop.

void  set_backlink (typename RouteBackLink::iterator v)


Set the backlink. When a resolved route is created, the ExtIntTable will store a link to it in a multimap that is indexed by the IGP parent. This will allow all the routes affected by a change in the IGP parent to be found easily. However, if the EGP parent goes away, we need to remove the links from this multimap, and the backlink provides an iterator into the multimap that makes this operation very efficient.


backlinkthe ExtIntTable multimap iterator for this route.
typename RouteBackLink::iterator  backlink ()



Get the backlink.

Returns: the backlink iterator.

See also: set_backlink

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