Disabling all ICMP unreachable messages
For more information, see
Disabling ICMP destination unreachable messages
on page 154.
switch(config)# no ip icmp unreachable
Syntax:
[no] ip icmp unreachable
Disabling ICMP redirects
You can disable ICMP redirects on the routing switch only on a global basis, for all the routing-switch interfaces.
Enter the following command at the global CONFIG level of the CLI:
switch(config)# no ip icmp redirects
Syntax:
[no] ip icmp redirects
IP interfaces
On the routing switches, IP addresses are associated with individual VLANs. By default, there is a single VLAN
(Default_VLAN) on the routing switch. In that configuration, a single IP address serves as the management
access address for the entire device. If routing is enabled on the routing switch, the IP address on the single
VLAN also acts as the routing interface.
Each IP address on a routing switch must be in a different subnet. You can have only one VLAN interface in a
given subnet. For example, you can configure IP addresses 192.168.1.1/24 and 192.168.2.1/24 on the same
routing switch, but you cannot configure 192.168.1.1/24 and 192.168.1.2/24 on the same routing switch.
You can configure multiple IP addresses on the same VLAN.
The number of IP addresses you can configure on an individual VLAN interface is 32.
You can use any of the IP addresses you configure on the routing switch for Telnet, Web management, or SNMP
access, as well as for routing.
NOTE:
All devices support configuration and display of IP address in classical subnet format
(example: 192.168.1.1 255.255.255.0) and Classless Interdomain Routing (CIDR) format (example:
192.168.1.1/24). You can use either format when configuring IP address information. IP addresses
are displayed in classical subnet format only.
IP tables and caches
ARP cache table
The ARP cache contains entries that map IP addresses to MAC addresses. Generally, the entries are for devices
that are directly attached to the routing switch.
An exception is an ARP entry for an interface-based static route that goes to a destination that is one or more
router hops away. For this type of entry, the MAC address is either the destination device's MAC address or the
MAC address of the router interface that answered an ARP request on behalf of the device, using proxy ARP.
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Aruba 3810 / 5400R Multicast and Routing Guide for ArubaOS-
Switch 16.08
