diff options
Diffstat (limited to 'doc/developer')
| -rw-r--r-- | doc/developer/ospf-sr.rst | 19 |
1 files changed, 8 insertions, 11 deletions
diff --git a/doc/developer/ospf-sr.rst b/doc/developer/ospf-sr.rst index 070465db5b..efe9b1b12f 100644 --- a/doc/developer/ospf-sr.rst +++ b/doc/developer/ospf-sr.rst @@ -1,8 +1,7 @@ OSPF Segment Routing ==================== -This is an EXPERIMENTAL support of draft -`draft-ietf-ospf-segment-routing-extensions-24`. +This is an EXPERIMENTAL support of `RFC 8665`. DON'T use it for production network. Supported Features @@ -10,12 +9,13 @@ Supported Features * Automatic computation of Primary and Backup Adjacency SID with Cisco experimental remote IP address -* SRGB configuration +* SRGB & SRLB configuration * Prefix configuration for Node SID with optional NO-PHP flag (Linux kernel support both mode) * Node MSD configuration (with Linux Kernel >= 4.10 a maximum of 32 labels could be stack) * Automatic provisioning of MPLS table +* Equal Cost Multi-Path (ECMP) * Static route configuration with label stack up to 32 labels Interoperability @@ -243,16 +243,16 @@ Routing. router ospf ospf router-id 192.168.1.11 capability opaque - mpls-te on - mpls-te router-address 192.168.1.11 - router-info area 0.0.0.0 segment-routing on segment-routing global-block 10000 19999 + segment-routing local-block 5000 5999 segment-routing node-msd 8 segment-routing prefix 192.168.1.11/32 index 1100 -The first segment-routing statement enable it. The Second one set the SRGB, -third line the MSD and finally, set the Prefix SID index for a given prefix. +The first segment-routing statement enables it. The second and third one set +the SRGB and SRLB respectively, fourth line the MSD and finally, set the +Prefix SID index for a given prefix. + Note that only prefix of Loopback interface could be configured with a Prefix SID. It is possible to add `no-php-flag` at the end of the prefix command to disable Penultimate Hop Popping. This advertises to peers that they MUST NOT pop @@ -265,9 +265,6 @@ Known limitations * Only single Area is supported. ABR is not yet supported * Only SPF algorithm is supported * Extended Prefix Range is not supported -* MPLS table are not flush at startup. Thus, restarting zebra process is - mandatory to remove old MPLS entries in the data plane after a crash of - ospfd daemon * With NO Penultimate Hop Popping, it is not possible to express a Segment Path with an Adjacency SID due to the impossibility for the Linux Kernel to perform double POP instruction. |