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-rw-r--r--docs/configuration/protocols/isis.rst59
1 files changed, 58 insertions, 1 deletions
diff --git a/docs/configuration/protocols/isis.rst b/docs/configuration/protocols/isis.rst
index ef9cc960..18a7c166 100644
--- a/docs/configuration/protocols/isis.rst
+++ b/docs/configuration/protocols/isis.rst
@@ -127,6 +127,19 @@ IS-IS Global Configuration
level-2
This command will generate a default-route in L2 database.
+
+
+.. cfgcmd:: set protocols isis ldp-sync
+
+ This command will enable IGP-LDP synchronization globally for ISIS. This
+ requires for LDP to be functional. This is described in :rfc:`5443`. By
+ default all interfaces operational in IS-IS are enabled for synchronization.
+ Loopbacks are exempt.
+
+.. cfgcmd:: set protocols isis ldp-sync holddown <seconds>
+
+ This command will change the hold down value globally for IGP-LDP
+ synchronization during convergence/interface flap events.
Interface Configuration
@@ -200,6 +213,15 @@ Interface Configuration
This command disables Three-Way Handshake for P2P adjacencies which
described in :rfc:`5303`. Three-Way Handshake is enabled by default.
+.. cfgcmd:: set protocols isis interface <interface> ldp-sync disable
+
+ This command disables IGP-LDP sync for this specific interface.
+
+.. cfgcmd:: set protocols isis interface <interface> ldp-sync holddown
+ <seconds>
+
+ This command will change the hold down value for IGP-LDP synchronization
+ during convergence/interface flap events, but for this interface only.
Route Redistribution
--------------------
@@ -401,7 +423,42 @@ Routes on Node 2:
I 203.0.113.0/24 [115/10] via 192.0.2.1, eth1, 00:03:42
-
+Enable IS-IS and IGP-LDP synchronization
+========================================
+
+**Node 1:**
+
+.. code-block:: none
+
+ set interfaces loopback lo address 192.168.255.255/32
+ set interfaces ethernet eth0 address 192.0.2.1/24
+
+ set protocols isis interface eth0
+ set protocols isis interface lo passive
+ set protocols isis ldp-sync
+ set protocols isis net 49.0001.1921.6825.5255.00
+
+ set protocols mpls interface eth0
+ set protocols mpls ldp discovery transport-ipv4-address 192.168.255.255
+ set protocols mpls ldp interface lo
+ set protocols mpls ldp interface eth0
+ set protocols mpls ldp parameters transport-prefer-ipv4
+ set protocols mpls ldp router-id 192.168.255.255
+
+
+This gives us IGP-LDP synchronization for all non-loopback interfaces with
+a holddown timer of zero seconds:
+
+
+.. code-block:: none
+
+ Node-1@vyos:~$ show isis mpls ldp-sync
+ eth0
+ LDP-IGP Synchronization enabled: yes
+ holddown timer in seconds: 0
+ State: Sync achieved
+
+
Enable IS-IS with Segment Routing (Experimental)