Hello,
Here is a patch for the packet-cdp.c and a sample capture to see the
changes.
This patch add the support of IP-PREFIX field used in On Demand Routing.
Please commit if it is ok.
--- ethereal-2001-01-04/packet-cdp.c Wed Jan 3 08:55:27 2001
+++ ethereal-my/packet-cdp.c Fri Jan 5 12:49:16 2001
@@ -76,6 +76,7 @@
#define TYPE_CAPABILITIES 0x0004
#define TYPE_IOS_VERSION 0x0005
#define TYPE_PLATFORM 0x0006
+#define TYPE_IP_PREFIX 0x0007
static const value_string type_vals[] = {
{ TYPE_DEVICE_ID, "Device ID" },
@@ -84,6 +85,7 @@
{ TYPE_CAPABILITIES, "Capabilities" },
{ TYPE_IOS_VERSION, "Software version" },
{ TYPE_PLATFORM, "Platform" },
+ { TYPE_IP_PREFIX, "IP Prefix (used for ODR)" },
{ 0, NULL },
};
@@ -251,7 +253,31 @@
tvb_get_ptr(tvb, offset + 4, length - 4));
offset += length;
break;
+ case TYPE_IP_PREFIX:
+ tlvi = proto_tree_add_text(cdp_tree, tvb, offset,
+ length, "IP Prefixes: %d",length/5);
+ /* the actual number of prefixes is (length-4)/5
+ but if the variable is not a "float" but "integer"
+ then length/5=(length-4)/5 :) */
+
+ tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv);
+ proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb,
+ offset + TLV_TYPE, 2, type);
+ proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb,
+ offset + TLV_LENGTH, 2, length);
+ offset +=4;
+ length -=4;
+ while (length > 0)
+ {
+ proto_tree_add_text(tlv_tree,tvb,offset,5,
+ "IP Prefix = %s/%d",
+ ip_to_str(tvb_get_ptr(tvb, offset, 4)),
+ tvb_get_guint8(tvb,offset+4));
+ offset += 5;
+ length -= 5;
+ }
+ break;
default:
tlvi = proto_tree_add_text(cdp_tree, tvb, offset,
length, "Type: %s, length: %u",
Attachment:
cdp3.cap
Description: Binary data
