Brocade Communications Systems Layer 3 Routing Configuration ICX 6650 - Manual (Page 35)

Brocade ICX 6650 Layer 3 Routing Configuration Guide 17
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Basic IP parameters and defaults – Layer 2 Switches
Basic IP parameters and defaults – Layer 2 Switches
IP is enabled by default. The following tables list the Layer 2 Switch IP parameters, their default
values, and where to find configuration information.
NOTE
Brocade Layer 2 Switches also provide IP multicast forwarding, which is enabled by default. For more
information about this feature, refer to the Brocade ICX 6650 IP Multicast Configuration Guide.
IP global parameters – Layer 2 Switches
Table 4 lists the IP global parameters for Layer 2 Switches.
TABLE 4 IP global parameters – Layer 2 Switches
Parameter Description Default For more
information
IP address
and mask
notation Format for displaying an IP address and its network
mask information. You can enable one of the
following:
•
Class-based format; example: 192.168.1.1
255.255.255.0
•
Classless Interdomain Routing (CIDR) format;
example: 192.168.1.1/24
Class-based
NOTE: Changing this
parameter affects
the display of IP
addresses, but you
can enter
addresses in either
format regardless
of the display
setting.
page 113
IP address A Layer 3 network interface address
NOTE: Layer 2 Switches have a single IP address
used for management access to the entire
device. Layer 3 Switches have separate IP
addresses on individual interfaces.
None configured 1 page 88
Default
gateway The IP address of a locally attached router (or a router
attached to the Layer 2 Switch by bridges or other
Layer 2 Switches). The Layer 2 Switch and clients
attached to it use the default gateway to
communicate with devices on other subnets. None configured page 88
Address
Resolution
Protocol (ARP) A standard IP mechanism that networking devices
use to learn the Media Access Control (MAC) address
of another device on the network. The Layer 2 Switch
sends the IP address of a device in the ARP request
and receives the device MAC address in an ARP reply. Enabled
NOTE: You cannot disable
ARP.
n/a
ARP age The amount of time the device keeps a MAC address
learned through ARP in the device ARP cache. The
device resets the timer to zero each time the ARP
entry is refreshed and removes the entry if the timer
reaches the ARP age. Ten minutes
NOTE: You cannot change
the ARP age on
Layer 2 Switches.
n/a
Time to Live
(TTL) The maximum number of routers (hops) through
which a packet can pass before being discarded.
Each router decreases a packet TTL by 1 before
forwarding the packet. If decreasing the TTL causes
the TTL to be 0, the router drops the packet instead of
forwarding it. 64 hops page 90