Cabletron Systems SmartSTACK ETHERNET ELS10-27 User Manual page 77

Configuring Your SmartSTACK Ethernet ELS10-27
User Interfaces (Telnet)
If the IP address is modiÞed via Telnet you are prompted to ensure this
change is desired. If this mechanism is used to make the change, the
change will not take affect until the next reboot.
In 802.1d mode the SmartSTACK Ethernet ELS10-27 allows for a single IP
address set for the entire device. The single IP is accessible from any front
panel port.
You are also able to conÞgure a default gateway. The default gateway is
used to send IP packets to an end system that does not have an entry in
the SmartSTACK Ethernet ELS10-27Õs ARP cache. The default gateway is
usually a router and the parameter set for default gateway is the IP
address of the router interface to which the SmartSTACK Ethernet
ELS10-27 is connected.
In 802.1Q mode, an IP address per vlan is allowed. You must specify a
VLAN ID to use to access that IP subnet. Only one VLAN ID per IP
subnet is allowed.
To assign an IP address, at the LCM prompt:
Type
ipaddr <IP ADDRESS>
For example, will set the IP address
ipaddr 192.138.217.40
192.138.217.40. LCM responds by displaying the IP address table, as
shown under the ipaddr command.
BOOTP
If there is not an in-band IP address assigned to the device in non-volatile
memory, the runtime image attempts to determine an in-band IP address
from the network. The runtime image will send out a BOOTP request to
determine its IP address. The requests will be sent out periodically until a
response is received. An interval of which BOOTP requests will be issued
is per the BOOTP speciÞcation. This retry mechanism goes on for
approximately two minutes. If after two minutes a response is not
received, the system waits for approximately Þve minutes before starting
the process over again. The Þrst response the device receives is stored in
non-volatile memory as the in-band IP address. As soon as an IP address
is received via BOOTP, the module will cease sending out BOOTP
requests completely. If the device has an IP address in non-volatile
memory the module will not send out BootP requests.
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