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Administrator Guide

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Table 37. Behavior of Various Applications for Switch-Initiated Trac
Protocol Behavior when EIS is Enabled Behavior when EIS is Disabled
dns EIS Behavior Default Behavior
ftp EIS Behavior Default Behavior
ntp EIS Behavior Default Behavior
radius EIS Behavior Default Behavior
Sow-collector Default Behavior
Snmp (SNMP Mib response and SNMP
Traps)
EIS Behavior Default Behavior
ssh EIS Behavior Default Behavior
syslog EIS Behavior Default Behavior
tacacs EIS Behavior Default Behavior
telnet EIS Behavior Default Behavior
tftp EIS Behavior Default Behavior
icmp (ping and traceroute) EIS Behavior for ICMP Default Behavior
Behavior of Various Applications for Switch-Destined Trac
This section describes the dierent system behaviors that occur when trac is terminated on the switch. Trac has not originated from
the switch and is not transiting the switch. Switch-destined trac is applicable only for applications which act as server for the TCP
session and also for ICMP-based applications like ping and traceroute. FTP, SSH, and Telnet are the applications that can function as
servers for the TCP session.
EIS Behavior: If source TCP or UDP port matches an EIS management or a non-EIS management application and source IP address is
management port IP address, management port is the preferred egress port selected based on route lookup in EIS table. If the
management port is down or the route lookup fails, packets are dropped.
If the source TCP/UDP port or source IP address does not match the management port IP address, a route lookup is done in the default
routing table.
EIS behavior for ICMP: ICMP packets do not have TCP/UDP ports. In this case, to perform an EIS route lookup for ICMP-based
applications (ping and traceroute), you must congure ICMP as a management application. If the management port is down or the route
lookup fails, packets are dropped.
If source IP address does not match the management port IP address route lookup is done in the default routing table.
Default Behavior: Route lookup is done in the default routing table and appropriate egress port is selected.
Internet Group Management Protocol (IGMP)
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