Minor patch to print some Cisco protocol info

[sthaug () nethelp no]

Very minor patch to print basic info about a few more Cisco LAN
protocols. See documentation of the PID values at for instance

http://www.cisco.com/en/US/products/hw/switches/ps700/products_white_paper09186a00801b49a4.shtml#pre4

Steinar Haug, Nethelp consulting, sthaug () nethelp no
----------------------------------------------------------------------

--- llc.h.orig  Thu Dec  1 18:45:45 2005
+++ llc.h       Mon Feb  5 10:52:31 2007
@@ -102,6 +102,9 @@
  * PIDs for use with OUI_CISCO.
  */
 #define        PID_CISCO_CDP           0x2000  /* Cisco Discovery Protocol */
+#define        PID_CISCO_VTP           0x2003  /* Cisco VLAN Trunk Protocol */
+#define        PID_CISCO_DTP           0x2004  /* Cisco Dynamic Trunk Protocol */
 
 /*
  * PIDs for use with OUI_RFC2684.
--- print-llc.c.orig    Tue Jan 17 18:43:55 2006
+++ print-llc.c Mon Feb  5 10:54:12 2007
@@ -103,6 +103,9 @@
 
 static const struct tok cisco_values[] = { 
        { PID_CISCO_CDP, "CDP" },
+       { PID_CISCO_VTP, "VTP" },
+       { PID_CISCO_DTP, "DTP" },
        { 0,             NULL }
 };
 
-
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