Cisco 9134 - MDS Multilayer Fabric Switch Troubleshooting Manual page 380

IP Issues
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
64 bytes from 11.18.185.121: icmp_seq=1 ttl=128 time=0.1 ms
64 bytes from 11.18.185.121: icmp_seq=2 ttl=128 time=0.2 ms
64 bytes from 11.18.185.121: icmp_seq=3 ttl=128 time=0.2 ms
64 bytes from 11.18.185.121: icmp_seq=4 ttl=128 time=0.1 ms
64 bytes from 11.18.185.121: icmp_seq=5 ttl=128 time=0.1 ms
--- 11.18.185.121 ping statistics ---
6 packets transmitted, 6 packets received, 0% packet loss
round-trip min/avg/max = 0.1/0.1/0.3 ms
If the ping fails, use the traceroute or the traceroute ipv6 command to determine where connectivity
Step 2
is failing.
switch# traceroute 11.18.185.121
traceroute to 11.18.185.121 (11.18.185.121), 30 hops max, 38 byte packets
1 11.18.189.129 (11.18.189.129)
2 11.18.0.33 (11.18.0.33)
3 11.81.254.69 (11.81.254.69)
4 * * *
5 * * *
Use show ip route or the show ipv6 route command to verify the static route to the remote device.
Step 3
switch # show ip route
Codes: C - connected, S - static
Default gateway is 11.18.185.97
C 11.18.185.96/27 is directly connected, mgmt0
C 11.18.189.128/26 is directly connected, gigabitethernet4/7
Step 4 Use the clear ips arp or clear ipv6 neighbor command to clear the Address Resolution Protocol (ARP)
or neighbor cache to verify that the activity you are viewing is the most current.
switch# clear ips arp interface gigabitethernet 4/7
arp clear successful
Use the show ips arp or the show ips ipv6 neighbors command to verify the hardware address for the
Step 5
remote device.
switch# show ips arp interface gigabitethernet 4/7
Protocol
Internet
Internet
Step 6 Use the show interface command to verify that the Gigabit Ethernet interface is up.
GigabitEthernet4/7 is up
Hardware is GigabitEthernet, address is 0005.3000.9f58
Internet address is 172.18.189.137/26
MTU 1500
Port mode is IPS
Speed is 1 Gbps
Beacon is turned off
5 minutes input rate 688 bits/sec, 86 bytes/sec, 0 frames/sec
5 minutes output rate 312 bits/sec, 39 bytes/sec, 0 frames/sec
156643 packets input, 16859832 bytes
144401 packets output, 7805631 bytes, 0 underruns
Cisco MDS 9000 Family Troubleshooting Guide, Release 3.x
20-6
Address Age (min)
172.18.185.97
172.18.189.156
bytes, BW 1000000 Kbit
0 multicast frames, 0 compressed
0 input errors, 0 frame, 0 overrun 0 fifo
0 output errors, 0 collisions, 0 fifo
0 carrier errors
0.413 ms 0.257 ms
0.296 ms 0.260 ms 0.258 ms
0.300 ms 0.273 ms
Hardware Addr
0 00:d0:01:3b:38:0a
0 00:08:02:b3:45:1b
Chapter 20 Troubleshooting IP Storage Services
0.249 ms
0.277 ms
Type Interface
ARPA GigabitEthernet4/7
ARPA GigabitEthernet4/7
OL-9285-05