Tweak in text based on CTP workshop 2.

diff --git a/doc/txt/tep123.txt b/doc/txt/tep123.txt
index 7cbf5aa71f385e952215dafc54e8e863164f809f..60d6cbfaa6b4c33935ff003ab3f8148a30e33b29 100644 (file)
--- a/doc/txt/tep123.txt
+++ b/doc/txt/tep123.txt
@@ -130,7 +130,7 @@ The CTP data frame format is as follows::
 
 Field definitions are as follows:
 
-  * C: Congestion notification. If a node is receiving packets faster than it can forward them, it MAY set the C field to notify other nodes. If a node hears a packet from node *N* with the C bit set, it MUST NOT transmit CTP data frames to *N* until it hears a packet from N with the C bit cleared.
+  * C: Congestion notification. If a node drops a CTP data frame, it MUST set the C field on the next data frame it transmits.
   * P: Routing pull. The P bit allows nodes to request routing information from other nodes. If a node with a valid route hears a packet with the P bit set, it SHOULD transmit a routing frame in the near future.
   * THL: Time Has Lived. When a node generates a CTP data frame, it MUST set THL to 0. When a node receives a CTP data frame, it MUST increment the THL. If a node receives a THL of 255, it increments it to 0.
   * ETX: The ETX routing metric of the single-hop sender. When a node transmits a CTP data frame, it MUST put the ETX value of its route through the single-hop destination in the ETX field.  If a node receives a packet with a lower gradient than its own, then it MUST schedule a routing frame in the near future.
@@ -169,7 +169,7 @@ The CTP routing frame format is as follows::
 
 The fields are as follows:
   
-  * C: Same as data frame.
+  * C: Congestion notification. If a node drops a CTP data frame, it MUST set the C field on the next routing frame it transmits.
   * P: Same as data frame.
   * parent: The node's current parent.
   * metric: The node's current routing metric value.