34-16
Cisco Catalyst Blade Switch 3020 for HP Software Configuration Guide
OL-8915-03
Chapter 34 Configuring IP Unicast Routing
Configuring IP Addressing
Beginning in privileged EXEC mode, follow these steps to increase spanning-tree-based flooding:
To disable this feature, use the
no ip forward-protocol turbo-flood
global configuration command.
Monitoring and Maintaining IP Addressing
When the contents of a particular cache, table, or database have become or are suspected to be invalid,
you can remove all its contents by using the
clear
privileged EXEC commands.
Table 34-2
lists the
commands for clearing contents.
You can display specific statistics, such as the contents of IP routing tables, caches, and databases; the
reachability of nodes; and the routing path that packets are taking through the network.
Table 34-3
lists
the privileged EXEC commands for displaying IP statistics.
Command
Purpose
Step 1
configure terminal
Enter global configuration mode
Step 2
ip forward-protocol turbo-flood
Use the spanning-tree database to speed up flooding of UDP datagrams.
Step 3
end
Return to privileged EXEC mode.
Step 4
show running-config
Verify your entry.
Step 5
copy running-config startup-config
(Optional) Save your entry in the configuration file.
Table 34-2
Commands to Clear Caches, Tables, and Databases
Command
Purpose
clear arp-cache
Clear the IP ARP cache and the fast-switching cache.
clear host
{
name
| *}
Remove one or all entries from the hostname and the address cache.
clear ip route
{
network
[
mask
] |*}
Remove one or more routes from the IP routing table.
Table 34-3
Commands to Display Caches, Tables, and Databases
Command
Purpose
show arp
Display the entries in the ARP table.
show hosts
Display the default domain name, style of lookup service, name server hosts,
and the cached list of hostnames and addresses.
show ip aliases
Display IP addresses mapped to TCP ports (aliases).
show ip arp
Display the IP ARP cache.
show ip interface
[
interface-id
]
Display the IP status of interfaces.
show ip irdp
Display IRDP values.
show ip masks
address
Display the masks used for network addresses and the number of subnets
using each mask.
show ip redirects
Display the address of a default gateway.
show ip route
[
address
[
mask
]] | [
protocol
]
Display the current state of the routing table.
show ip route summary
Display the current state of the routing table in summary form.
