R2511-HP MSR Router Series ACL and QoS Configuration Guide(V5)

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Figure 33 Header format of an SR-type RTCP packet
The fields are described as follows:
• V—2 bits, version number.
• P—1 bits, padding flag.
• RC—5 bits, the number of receiving report blocks in the RTCP packet.
• PT—8 bits, RTCP packet type flag. This field is 200 for SR-type RTCP packets.
• Length—16 bits, length of the RTCP packet.
• SSRC of Sender—32 bits, SSRC of the sender.
The structure of the RR-type RTCP packet header is similar to that of the SR-type RTCP packet header,
except the PT field of the RR type is 201.
Static protocols
Some protocols using TCP and UDP are identified by TCP or UDP port numbers. Table 9 lists their names
and port numbers.
Table 6 Static port protocols
Protocol name Protocol t
yp
e Default
p
ort numbers
BGP TCP/UDP 179
Citrix TCP 1494
Citrix UDP 1604
CU-SeeMe TCP 7648, 7649
CU-SeeMe UDP 7648, 7649, 24032
DHCP/BOOTP UDP 67, 68
DNS TCP/UDP 53
Exchange TCP 135
Fasttrack TCP 1214
Finger TCP 79
Gnutella TCP 6346, 6347, 6348, 6349, 6355, 5634
Gopher TCP/UDP 70
H323 TCP 1300, 1718, 1719, 1720, 11000 to 11999
H323 UDP 1300 , 1718, 1719, 1720, 11720
IMAP TCP/UDP 143, 220
IRC TCP/UDP 194
Kerberos TCP/UDP 88, 749
L2TP UDP 1701