commit e7207098c0fa88af6899c1b1483e3ddb19f5336a
author Christian Franke <nobody@nowhere.ws> Sun Apr 03 12:46:28 2016 -0300
committer Donald Sharp <sharpd@cumulusnetworks.com> Fri Apr 22 08:34:08 2016 -0400
tree 5df0525bedfed10c2380d191c550c81943d5e3cd
parent 84a4da039fa620942b6c3a9ff21b7502803f53be

isisd: ignore unknown interfaces when adjusting IS-IS mtu

For example during startup of isisd, the MTU of interfaces is not
known, since this information will only be available once the
interfaces have been learned from zebra.

It makes no sense to include the MTU 0 that is stored for interfaces
in this state in the consideration whether a new lsp-mtu for an
area is valid, so skip interfaces which are in this state.

Signed-off-by: Christian Franke <nobody@nowhere.ws>

isisd/isisd.c

diff --git a/isisd/isisd.c b/isisd/isisd.c
index c446e7f..26b7125 100644
--- a/isisd/isisd.c
+++ b/isisd/isisd.c
@@ -1619,6 +1619,8 @@
 
   for (ALL_LIST_ELEMENTS_RO(area->circuit_list, node, circuit))
     {
+      if(circuit->state != C_STATE_INIT && circuit->state != C_STATE_UP)
+        continue;
       if(lsp_mtu > isis_circuit_pdu_size(circuit))
         {
           vty_out(vty, "ISIS area contains circuit %s, which has a maximum PDU size of %zu.%s",