Using The Traceroute Or Traceroute6 Command; Traceroute - Ipv4; Traceroute6 - Ipv6; Viewing Ip Routes - Cisco ASR 5500 Administration Manual

Troubleshooting

Using the traceroute or traceroute6 Command

The traceroute or traceroute6 command collects information on the route data will take to a specified host.
This is a useful troubleshooting command that can be used to identify the source of significant packet delays
or packet loss on the network. This command can also be used to identify bottle necks in the routing of data
over the network.
traceroute – IPv4
The traceroute command has the following syntax:
traceroute { host_name | host_ipv4_address } [ count packets ] [ df ] [ maxttl max_ttl ] [ minttl min_ttl
] [ port port_number ] [ size octet_count ] [ src { src_host_name | src_host_ipv4_address } ] [ timeout
seconds ] [ vrf vrf_nam ]
For complete information on the above command, see the Exec Mode Commands chapter of the Command
Line Interface Reference.
The following displays a sample output.
traceroute to 192.168.250.1 (192.168.250.1), 30 hops max, 40 byte packets
1
traceroute6 – IPv6
The traceroute6 command has the following syntax:
traceroute6 { host_name | host_ipv6_address } [ count packets ] [ maxttl max_ttl ] [ port port_number
] [ size octet_count ] [ src { src_host_name | src_host_ipv6_address } ] [ timeout seconds ] [ vrf
vrf_nam ]
For complete information on the above commands, see the Exec Mode Commands chapter of the Command
Line Interface Reference.
The following displays a sample output.
traceroute6 to 2001:4A2B::1f3F (2001:4A2B::1f3F), 30 hops max, 40 byte packets
1

Viewing IP Routes

The system provides a mechanism for viewing route information to a specific node or for an entire context.
This information can be used to verify network connectivity and to ensure the efficiency of the network
connection. The command has the following syntax:
show ip route [ route_ip_address ]
show ipv6 route [ route_ipv6_address ] ]
For complete information on the above commands, see the Exec Mode show Commands chapter of the
Command Line Interface Reference.
If no keywords are specified, all IP routes within the context's routing table are displayed.
The following displays a sample of this command's output showing a context IPv4 routing table.
"*" indicates the Best or Used route.
Destination
*0.0.0.0/0
192.168.250.1 (192.168.250.1)
2001:4A2B::1f3F (2001:4A2B::1f3F)
Nexthop
10.0.4.1
0.446 ms 0.235 ms
0.446 ms 0.235 ms 0.178 ms
Protocol Prec Cost
static 0 0
ASR 5500 System Administration Guide, StarOS Release 19
Using the traceroute or traceroute6 Command
0.178 ms
Interface
SPIO1
173