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-rw-r--r--doc/bird.sgml10
1 files changed, 10 insertions, 0 deletions
diff --git a/doc/bird.sgml b/doc/bird.sgml
index c070be1..5095b78 100644
--- a/doc/bird.sgml
+++ b/doc/bird.sgml
@@ -762,6 +762,16 @@ for each neighbor using the following configuration parameters:
Even when disabled (off), BIRD behaves internally as AS4-aware BGP router.
Default: on.
+ <tag>advertise ipv4</tag> Advertise IPv4 multiprotocol capability.
+ This is not correct behavior but it is required by some BGP
+ implementations (Cisco and Quagga). Without this option,
+ the session establishment with these implementations takes
+ more time, session is degraded (no optional capabilities)
+ and the problem is logged. When the option is used, there might
+ be compatibility issues with other BGP implementations.
+ This option is relevant to IPv4 mode only.
+ Default: disabled.
+
<tag>disable after error <m/switch/</tag> When an error is encountered (either
locally or by the other side), disable the instance automatically
and wait for an administrator to fix the problem manually. Default: off.