Srv6 nexthop segments may not be set when configuring seg6local
attributes. This is the case for the following seg6local route:
Dump in vtysh, extract from 'show ipv6 route'
> B>* 2001:db8:1:1:1::/128 [20/0] is directly connected, vrf1, seg6local End.DT46 table 10, seg6 ::, weight 1, 00:02:10
Dump in iproute2, extract from 'ip -6 route show'
> 2001:db8:1:1:1:: nhid 22 encap seg6local action End.DT46 vrftable 10 dev vrf1 proto bgp metric 20 pref medium
As can be seen, the 'seg6 ::' nexthop segment is not visible on iproute2,
because it is not set. Do not display seg6 ipv6 nexthop when not set.
After:
> B>* 2001:db8:1:1:1::/128 [20/0] is directly connected, vrf1, seg6local End.DT46 table 10, weight 1, 00:02:10
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
Srv6 routes which configure encap method, may not have
seg6local instructions. Generally speaking, seg6local
attributes that are not specified should not be dumped.
Before:
> B>* 10.200.0.0/24 [20/0] via fd00:125::2, ntfp2 (vrf default), label 16, seg6local unspec unknown(seg6local_context2str), seg6 2001:db8:1:1:1::, weight 1, 0\
0:00:17
After:
> B>* 10.200.0.0/24 [20/0] via fd00:125::2, ntfp2 (vrf default), label 16, seg6 2001:db8:1:1:1::, weight 1, 00:00:17
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
An L3VPN network can be configured on the main BGP instance,
with an SRv6 SID. By declaring a network, a seg6local route
is created but remains invalid.
The below BGP VPN configuration the default VRF has been
used:
> router bgp 1
> address-family ipv6 unicast
> sid vpn export auto
> rd vpn export 1:30
> rt vpn both 77:77
> import vpn
> export vpn
> network 2001:7::/64
> exit-address-family
The below seg6local route has been added:
> # show ipv6 route
> [..]
> B 2001:db8:2:2:300::/128 [20/0] is directly connected, unknown inactive, seg6local End.DT6 table 254, seg6 ::, weight 1, 00:00:07
>
When creating the seg6local route, an interface is used as nexthop.
The interface index is obtained from the vrf identifier. This is
true when using VRF interfaces, but is wrong when using the lo
interface which usually has the '1' ifindex whereas the vrf id for
the default VRF is 0.
Get the appropriate index from the vrf identifier.
The below seg6local route is visible:
> # show ipv6 route
> [..]
> B>* 2001:db8:1:1:300::/128 [20/0] is directly connected, lo, seg6local End.DT6 table 254, seg6 ::, weight 1, 00:00:15
>
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
fix the print iso macro documentation
Fixes: 7f9ab3b0bb ("lib: Add ISO System & Network format to printfrr")
Signed-off-by: Louis Scalbert <louis.scalbert@6wind.com>
ZEBRA_IMPORT_CHECK_UPDATE has been gone for more than a year; remove
some leftover dead references to it.
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
When ospf6 is started up and SPF is run depending on which route is
selected as the parent route we could miss adding a NH. If one
possible parent route has two equal cost paths and the second possible
parent route has only one depending on which one is selected first
determines if we have have one or two NHs.
In the network below when creating a route 2001:db8:3:4::/64 in R2.
When SPF is run there are two possible parent routes R3 and R4.
2001:db8:1:2 +-----+ 2001:db8:2:5
+--------------+ 2 +---------------+
| ::2 | | ::2 |
| +-----+ |
| |
::1| |
+-----+ |::5
| 1 |2001:db8:1:3+-----+2001:db8:3:5+-----+2001:db8:5:6+-----+
| +------------+ 3 +------------+ 5 +------------+ 6 |
+-----+ ::1 ::3 | |::3 ::5 | |::5 ::6| |
::1| +-----+ +-----+ +-----+
| |::3
| | 2001:db8:3:4
| |
| |::4
| 2001:db8:1:4 +-----+
+--------------+ 4 |
::4 | |
+-----+
The problem was if we first created the route to 2001:db8:3:4::/64 with R3
as the parent route all is fine. The code was merging the NH from the parent
route and R3 has 2 NH, one pointing to R1 and one to R5. But if route
2001:db8:3:4::/64 was first created with parent as R4, it has only one NH
pointing to R1, and then later a new vertex was created pointing to R3 the
code would only copy the nhs from the vertex not from the parent route. The
vertex always has just one NH. But the parent route could have more. So
when we would bringup this setup one time we would see one NH for
2001:db8:3:4::/64 and the next time we would see two NHs. The code has been
modified so that it behaves the same when the route is first created, or when
a vertex is created, it selects the NHs from the parent route.
Signed-off-by: Lynne Morrison <lynne@voltanet.io>
The label value for the given prefix was ignored,
as the compare function always returns ok.
Do return the json compare output.
Fixes: eee086e6d2 ("topotests: add topotest to check bgp lu explicit-null service")
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
The BGP local label value is not re-set when the prefix
is either a network or an aggregate prefix. Ensure to
get the appropriate label value each time the 'need_imp_null_label()'
function has to return true.
Fixes: 7ee70320d3 ("bgpd: add cli command to control explicit-null label usage")
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
- nice correspondence between new YANG grouping and shared library code.
- fixes bug with RIPNG use, certainly didn't work before.
- removes rip header from shared library code
- still has uses RIP_NODE/RIPNG_NODE as required by CLI foo.
Signed-off-by: Christian Hopps <chopps@labn.net>
