Reference Guide

View monitoring session
OS10(conf-mon-rspan-source-10)# do show monitor session all
S.Id Source Destination Dir SrcIP DstIP DSCP TTL State Reason
---------------------------------------------------------------
1 vlan10 vlan 100 rx N/A N/A N/A N/A true Is UP
Encapsulated remote port monitoring
The monitored trac can also be transmitted over an L3 network to a remote analyzer. The encapsulated remote port monitoring (ERPM)
session mirrors trac from the source ports/lags or source VLANs and forwards the trac using routable GRE-encapsulated packets to
the destination IP address specied in the session.
Consider the following points while conguring an ERPM session:
OS10 supports only the ERPM source session. The encapsulated packets terminate at the destination IP address, the remote analyzer.
The source IP address must be a valid local IP address for the session to be up.
The destination IP address must be on a remote L3 node that supports standard GRE decapsulation.
If the destination IP address is not reachable, the session goes down.
OS10 does not support ERPM destination session and decapsulation of ERPM packets at the destination switch.
You can congure a maximum of 4 ERPM sessions with a maximum of 128 source ports in each session. You can congure these 4
ERPM sessions in one of the following methods:
Single directional with either 4 ingress or 4 egress sessions.
Bidirectional with 2 ingress and 2 egress sessions.
In the S4200 platforms, you can congure a maximum of 15 ERPM sessions with a maximum of 128 source ports in each session. You
can congure these 15 ERPM sessions in one of the following methods:
Single directional with either 15 ingress or 15 egress sessions.
Bidirectional with 15 ingress and egress sessions.
You can monitor a source VLAN only through ow-based monitoring. Only ingress is supported in a ow-based source VLAN
monitoring.
You cannot congure an interface with ERPM trac as a source for an ERPM session.
You cannot monitor an RPM VLAN as a source.
You cannot congure the same destination IP address for two sessions.
You cannot congure an interface that serves as egress for GRE tunnel as a source interface.
ERPM supports only GRE over IPv4 tunneling.
ERPM does not support ECMP.
You can use third party devices as only tunnel-transit devices.
OS10 does not support monitoring VLAN sub-interfaces and CPU generated packets.
Congure encapsulated remote port monitoring
Encapsulated remote port monitoring requires valid source and destination IP addresses. Ensure that the source IP address is local and
destination IP address is remote. You can also congure the TTL and DSCP values.
Create monitoring session
OS10(config)# monitor session 10 type erpm-source
S10(conf-mon-erpm-source-10)#
Congure source port, source and destination IP addresses, and protocol type
OS10(conf-mon-erpm-source-10)# source interface ethernet 1/1/2
OS10(conf-mon-erpm-source-10)# source-ip 1.1.1.1 destination-ip 3.3.3.3 gre-protocol 35006
OS10(conf-mon-erpm-source-10)# ip ttl 16
248
Layer 2