Alcatel Carrier Internetworking Solutions 6648 User Manual

Page 182

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Troubleshooting via the CLI

Troubleshooting IP Routing

page 12-6

OmniSwitch Troubleshooting Guide

September 2005

Destination unreachable 201 15
Time exceeded 0 0
Parameter problem 0 0
Source quench 0 0
Redirect 0 0
Echo request 9377 0
Echo reply 1 9377
Address mask request 0 0
Address mask reply 0 0

The show ip router database command may yield a clue, possibly telling you that an interface that is
designated as a router interface is down or disabled for some reason.

-> show ip router database
Destination Gateway Protocol Metric VLAN
-------------------+----------------+--------+------+-----
192.168.1.0/24 192.168.1.1 LOCAL 1 1
192.168.1.0/24 192.168.1.1 STATIC 1 1
Inactive Static Routes
Destination Gateway Metric
-----------------+--------------+------

If a route shows up as inactive, that must be investigated and corrected.

-> show ip interface

Total 3 interfaces
Name IP Address Subnet Mask Type Status Forward
---------+---------------+---------------+--------+--------+----------

loopback 127.0.0.1 255.0.0.0 ETH_II UP NO
EMP 24.24.24.24 255.0.0.0 ETH_II DOWN NO
vlan 1 10.255.11.224 255.255.255.0 ETH_II UP YES

Or:

-> show ip interface vlan 1
vlan 1

Link type = ETH_II,
Link status = UP,
SNMP interface index = 13600001
Interface index = 3
Enable IP forwarding = YES,
Administrative status = ENABLED,
Operational status = ACTIVATED,
Enable trap = NO,
Internet address = 10.255.11.224,
Broadcast address = 10.255.11.255,
Subnet mask = 255.255.255.0,
Hardware address = 00:d0:95:6a:f4:58,
Vrrp MAC = 00:00:00:00:00:00,
Auth MAC = 00:00:00:00:00:00,
Maximum Transfer Unit (MTU) = 1500
Packets received = 239333,
Packets sent = 168910,
Bytes received = 42210028,
Bytes sent = 100375790,
Multicast packets received = 20802,

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