Checking Connectivity - Cisco WS-C6506 Software Manual

Chapter 4 Configuring Ethernet, Fast Ethernet, Gigabit Ethernet, and 10-Gigabit Ethernet Switching
To configure the MTU value, perform this task:
Task
Step 1 Access VLAN interface configuration mode.
Step 2
Set the MTU size. The valid values are from 64 to
17952 bytes
Step 3 Verify the configuration.
1. Set the MTU size no larger than 9216, which is the size that is supported by the supervisor engine.
This example shows how to set the MTU size on a VLAN interface and verify the configuration:
Router(config)# interface vlan 111
Router(config-if)# mtu 9216
Router(config-if)# end
Router# show interface vlan 111
.
.
.
MTU 9216 bytes, BW 1000000 Kbit, DLY 10 usec,
.
.
.
Router#

Checking Connectivity

Use the ping and traceroute commands to test connectivity.
To check connectivity out a port, perform this task in privileged mode:
Task
Step 1 Ping a remote host that is located out the port that
you want to test.
Step 2
Trace the hop-by-hop route of packets from the
switch to a remote host that is located out the port
that you want to test.
Step 3
If the host is unresponsive, check the IP address
and default gateway that are configured on the
switch.
This example shows how to ping a remote host and trace the hop-by-hop path of packets through the
network using traceroute:
Console> (enable) ping somehost
somehost is alive
Console> (enable) traceroute somehost
traceroute to somehost.company.com (10.1.2.3), 30 hops max, 40 byte packets
1 engineering-1.company.com (173.31.192.206) 2 ms 1 ms 1 ms
2 engineering-2.company.com (173.31.196.204) 2 ms 3 ms 2 ms
3 gateway_a.company.com (173.16.1.201) 6 ms 3 ms 3 ms
4 somehost.company.com (10.1.2.3) 3 ms * 2 ms
Console> (enable)
OL-8978-04
1
.
Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
Setting the Port Configuration
Command
Router(config)# interface vlan vlan_ID
Router(config-if)# mtu mtu_size
Router# show interface vlan 111
Command
ping [-s] host [packet_size] [packet_count]
traceroute host
show interface
show ip route
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