
Chapter 10. Statistics
61200214L1-20 IQ Probe User Manual 10-13
The selections are called P
ROTOCOL
1 and P
ROTOCOL
2 and are found in
the S
YSTEM
portion of the C
ONFIGURATION
menu (see Protocols 1 and 2 on
page 9-5). Layer 3 tracking supports the following four protocols:
• IP (routed and bridged)
• IPX (routed and bridged)
• SNA (ten SNA types as defined in FRF-3)
SNA-Subarea (FID4) with Layer 2 (LLC2)
SNA-Peripheral (FID2) with Layer 2 (LLC2)
SNA-APPN with Layer 2 (LLC2)
SNA-HPR with Layer 2 (LLC2)
SNA-Netbios with Layer 2 (LLC2)
SNA-Subarea (FID4) without Layer 2 (LLC2)
SNA-Peripheral (FID2) without Layer 2 (LLC2)
SNA-APPN without Layer 2 (LLC2)
SNA-Netbios without Layer 2 (LLC2)
SNA-HPR without Layer 2 (LLC2)
•ARP
For Layer 3 tracking to function, the data must be RFC-1490 encapsulated
data or RFC-2427 encapsulated data (RFC-2427 superseded RFC-1490).
For an IP packet to be recognized, it must be carried by an RFC-2427 IP
header or an RFC-2427 SNAP header for bridged ethernet. If the SNAP
header is carrying a bridged ethernet packet, the MAC header is examined
for the protocol type.
SNAP headers are also examined for IPX and ARP traffic.
Information is gathered for the two protocol types you choose and is dis-
played with P1 representing information for P
ROTOCOL
1 and P2 repre-
senting information for P
ROTOCOL
2.
The ARP option actually tracks inverse ARP where addresses
are resolved across the WAN link. SNA traffic is recognized
by its RFC-2427 header.
Kommentare zu diesen Handbüchern