Traffic Directions - Cisco NCS 4200 Series Configuration Manual

Traffic Directions

Traffic Directions
Ingress SPAN (Rx) copies network traffic received by the source interfaces for analysis at the destination
interface. Egress SPAN (Tx) copies network traffic transmitted from the source interfaces to the destination
interface. Specifying the configuration option (both) copies network traffic received and transmitted by the
source interfaces to the destination interface.
The following table lists the supported traffic types for RSPAN.
Table 1: RSPAN Traffic
Source
Layer2 or Layer3
VLAN
EFP
Pseudowire
The following table lists the supported rewrite traffic for RSPAN on the EFP, Trunk with the associated
RSPAN bridge domains.
Table 2: Rewrite Traffic for RSPAN BD
Rewrite Operations
no-rewrite
The following tables lists the format of the spanned packets at the destination port for both Ingress and Egress
RSPAN. The tables lists the formats of untagged, single, and double tagged source packets for EFPs under
source port configured with rewrite operations (no-rewrite, pop1, pop2 and push1).
Table 3: Destination Port Ingress and Egress Spanned Traffic for EVC RSPAN BD
(Untagged Traffic) - Source port
rewrite
no-rewrite
pop1 tag
pop2 tag
Layer 2 Configuration Guide for Cisco NCS 4200 Series
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Ingress Mirror (Rx) Egress Mirror (Tx)
Supported Supported
Supported Not supported
Not supported Not supported
Not supported Not supported
Source
Pop1, Pop2, Push1
Ingress Traffic
RSPAN Vlan (BD) rewrite pop1
tag symmetric
RSPAN BD tag + packet
NA
NA
Configuring Switched Port Analyzer
Both
Supported
Not supported
Not supported
Not supported
EFP/Trunk associated with RSPAN
BD
Only Pop1
Egress Traffic
RSPAN Vlan (BD) rewrite pop1
tag symmetric
RSPAN BD tag + packet
NA
NA