XGS-5240-Series User Manual

Configuration Guide of XGS-5240-Series
66-2
2. Normal mode: To configure the RSPAN destination port in the RSPAN VLAN. Th
us, datagrams in the RSPAN VLAN will be broadcasted to the destination port. I
n this mode, the destination port should be in RSPAN VLAN, and the source p
ort should not be configured for broadcasting storm control. TRUNK ports should
be configured carefully in order not to forward RSPAN datagrams to external n
etworks. The normal mode has the benefit of easy configuration, and reduced s
ystem resources.
To be noticed: Normal mode is introduced by default. When using the normal mode,
datagrams with reserved MAC addresses cannot be broadcasted.
For chassis switches, at most 4 mirror destination ports are supported, and source
or destination port of one mirror session can be configured on each line card. For box
switches, only one mirror session can be configured. The number of the source mirror
ports is not limited, and can be one or more. Multiple source ports are not restricted to
be in the same VLAN. The destination port and the source ports can be in different V
LAN.
For configuration of RSPAN, a dedicated RSPAN VLAN should be configured first f
or carrying the RSPAN datagrams. The default VLAN, dynamic VLAN, private VLAN, m
ulticast VLAN, and the layer 3 interface enabled VLAN cannot be configured as the RS
PAN VLAN. The reflector port must belong to the RSPAN VLAN. The destination port s
hould be connected to the Monitor and the configured as access port or the TRUNK p
ort. The RSPAN reflector port will be working dedicatedly for mirroring, when a port is
configured as a reflector port, it will discards all the existing connections to the remote
peer, disable configurations related to loopback interfaces, and stop forwarding datagra
m. Connectivity between the source and destination switch for Remote VLAN, should b
e made sure by configuration.
To be noticed:
1. Layer 3 interfaces related to RSPAN VLAN should not be configured on the
source, intermediate, and the destination switches, or the mirrored datagrams may
be discarded.
2. For the source and intermediate switches in the RSPAN connections, the na
tive VLAN of TRUNK port cannot be configured as the RSPAN VLAN, Otherwise t
he RSPAN tag will be disposed before reaching the destination switches.
3. The source port, in access or trunk mode, should not be added to RSPAN
VLAN if advanced RSPAN mode is chosen. When the reflector port is used for a i
nter-card mirroring of CPU TX data, it must be configured as TRUNK port and allo
ws the RSPAN VLAN data passing, the Native VLAN should not be configured as
RSPAN VLAN.
4. When configuring the remote mirroring function, the network bandwidth shoul