topotests: add bgp mpls allocation per next-hop test

A new test suite checks for the mpls label allocation
per nexthop mode. This test checks that:
- The labels are correctly allocated per connected
next-hop.
- The default label is used for non connected prefixes
- The withdraw operation frees the mpls entry.
- If a recursive route is redistributed by BGP, then the nexthop
tracking will find the appropriate nexthop entry, and the associated
label will be found out.
- When a prefix moves from one peer to one another behind the vrf,
then the MPLS switching operation for return traffic is changing
the outgoing interface to use.
- When the 'label vpn export <value>' MPLS label value is changed,
then the modification is propagated to prefixes which use that value.
- When unconfiguring the per-nexthop allocation mode, check
that the MPLS entries and the VPNv4 entries of r1 are changed
accordingly.
- Reversely, when re-configuring the per-nexthop allocation mode,
check that the allocation mode reuses the other label values.

Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>

0 files changed, 0 insertions, 0 deletions