Louis Scalbert a90d4c45db isisd: fix metric calculation of classic lfa backup prefixes ... The isis-lfa-topo1 topotest shows backup routes with lower metrics than the primary ones. > rt1# show isis route > Area 1: > IS-IS L1 IPv6 routing table: > > Prefix Metric Interface Nexthop Label(s) > ------------------------------------------------------------------------------ > 2001:db8:1000::1/128 0 - - - > 2001:db8:1000::2/128 20 eth-rt2 fe80::d091:eeff:fe09:31cd - > 2001:db8:1000::3/128 20 eth-rt3 fe80::946b:d4ff:fe5b:414b - > 2001:db8:1000::4/128 20 eth-rt4 fe80::5ced:29ff:feed:59c4 - > (...) > > rt1# show isis route backup > Area 1: > IS-IS L1 IPv6 routing table: > > Prefix Metric Interface Nexthop Label(s) > ------------------------------------------------------------------------------ > 2001:db8:1000::2/128 15 eth-rt3 fe80::946b:d4ff:fe5b:414b - > eth-rt5 fe80::847d:feff:fe74:bdde - > eth-rt6 fe80::ac8c:dff:feac:8a8d - > 2001:db8:1000::3/128 15 eth-rt2 fe80::d091:eeff:fe09:31cd - > eth-rt5 fe80::847d:feff:fe74:bdde - > 2001:db8:1000::4/128 45 eth-rt5 fe80::847d:feff:fe74:bdde - > (...) Backup routes metrics are incorrect because they only take into account the path metric but not the prefix metric. Add the prefix metric to the path metric on backup routes. After the patch with a prefix metric of 10: > rt1# show isis route backup > Area 1: > IS-IS L1 IPv6 routing table: > > Area 1: > IS-IS L1 IPv6 routing table: > > Prefix Metric Interface Nexthop Label(s) > ------------------------------------------------------------------------------ > 2001:db8:1000::2/128 25 eth-rt3 fe80::8c6f:8aff:fe10:ad0d - > eth-rt5 fe80::b08e:5cff:fe90:62dd - > eth-rt6 fe80::4810:47ff:fe81:2b9a - > 2001:db8:1000::3/128 25 eth-rt2 fe80::e855:12ff:fe31:5765 - > eth-rt5 fe80::b08e:5cff:fe90:62dd - > 2001:db8:1000::4/128 55 eth-rt5 fe80::b08e:5cff:fe90:62dd - Fixes: e886416f81 ("isisd: add support for classic LFA (RFC 5286)") Signed-off-by: Louis Scalbert <louis.scalbert@6wind.com>		2022-10-24 14:56:42 +02:00
..
bgpd	bgpd: Add RFC9234 implementation	2022-06-17 13:14:46 +03:00
helpers	*: Change thread->func to return void instead of int	2022-02-23 19:56:04 -05:00
isisd	isisd: fix metric calculation of classic lfa backup prefixes	2022-10-24 14:56:42 +02:00
lib	tests: make hash collision test collide harder	2022-10-06 15:28:26 +02:00
ospf6d	build: break up tests/subdir.am	2021-11-11 14:40:03 +01:00
ospfd	ospfd: add all_rtrs route table when opaque enabled	2022-06-02 16:37:16 -04:00
topotests	topotests: isis-tilfa add a switchover test after BFD down	2022-10-24 14:56:42 +02:00
zebra	build: break up tests/subdir.am	2021-11-11 14:40:03 +01:00
.gitignore	tests: new grpc topotest	2022-03-14 11:14:12 -04:00
Makefile	build: non-recursive tests	2018-09-08 21:26:54 +02:00
pytest.ini	tests: Exclude topotests from consideration	2018-11-27 20:22:10 -05:00
runtests.py	*: reformat python files	2020-10-07 17:22:26 -04:00
subdir.am	build: break up tests/subdir.am	2021-11-11 14:40:03 +01:00