Enabling And Disabling Management Egress Interface Selection; Handling Of Management Route Configuration - Dell S4048–ON Configuration Manual

Two tables, namely, Egress Interface Selection routing table and default routing table, are maintained. In the preceding table, the
columns Client and Server indicate that the applications can act as both a client and a server within the switch. The Management
Egress Interface Selection table contains all management routes (connected, static and default route). The default routing table
contains all management routes (connected, static and default route) and all front-end port routes.

Enabling and Disabling Management Egress Interface Selection

You can enable or disable egress-interface-selection using the management egress-interface-selection command.
NOTE: Egress Interface Selection (EIS) works only with IPv4 routing.
When the feature is enabled using the management egress-interface-selection command, the following events are
performed:
• The CLI prompt changes to the EIS mode.
• In this mode, you can run the application and no application commands
• Applications can be configured or unconfigured as management applications using the application or no application
command. All configured applications are considered as management applications and the rest of them as non-management
applications.
• All the management routes (connected, static and default) are duplicated and added to the management EIS routing table.
• Any new management route added is installed to both the EIS routing table and default routing table.
• For management applications, route lookup is preferentially done in the management EIS routing table for all traffic. management
port is the preferred egress port. For example, if SSH is a management application, an SSH session to a front-panel port IP on
the peer box is initiated via management port only, if the management port is UP and management route is available.
• If SSH request is received on the management port destined to the management port IP address, the response to the request is
sent out of the management port by performing a route lookup in the EIS routing table
• If the SSH request is received on the front-end port destined for the front-end IP address, the response traffic is sent by doing a
route lookup in the default routing table only.
• If the management port is down or route lookup fails in the management EIS routing table, packets are dropped.
• For all non-management applications, traffic exits out of either front-end data port or management port based on route lookup in
default routing table.
• Ping and traceroute are always non-management applications and route lookup for these applications is done in the default
routing table only.
• For ping and traceroute utilities that are initiated from the switch, if reachability needs to be tested through routes in the
management EIS routing table, you must configure ICMP as a management application.
• If ping and traceroute are destined to the management port IP address, the response traffic for these packets is sent by doing
route lookup in the EIS routing table.
When the feature is disabled using the no management egress-interface-selection command, the following operations
are performed:
• All management application configuration is removed.
• All routes installed in the management EIS routing table are removed.

Handling of Management Route Configuration

When the EIS feature is enabled, the following processing occurs:
• All existing management routes (connected, static and default) are duplicated and added to the management EIS routing table.
• Any management static route newly added using the management route CLI is installed to both the management EIS routing
table and default routing table.
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Internet Group Management Protocol (IGMP)