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DES-7200 Configuration Guide Chapter 6 RSPAN
Configuration
6 RSPAN C
6.1 Overview
onfiguration
RSPAN is the expansion of SPAN. Re t
mirrored port and mirroring port must
dev deployed between them and a a
pac e remotely mirroring port by analyzer in the central machine room.
All the mirrored packets are transmitted to l
RSPAN Vlan (also known as Remote VLAN). Typical application topology is shown
as below.
mote mirroring breaks the restriction tha
be on the same device. Multiple network
dministrators can observe the dat
the remote mirroring port via a specia
ices are
kets on th
Figure 1 Typical RSPAN application topology
Figure 1 illustrates three roles:
Source switch: Where the mirrored port is. The source switch copies the
packets of source port and forwards them through the Remote VLAN to the
middle swithc or the destination swithc.
Middle switch: The one between the source switch and the destination
switch. It transmmits the mirrored pakcets to the next middle switch or the
destination switch via Remote VLAN. If the source switch is directly
connected with the destination switch, then there is no middle swith.
6-1