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Cisco ONS 15327 Troubleshooting Guide, R3.4
April 2003
Chapter 1 General Troubleshooting
CTC Operation Troubleshooting
Step 7 Verify connectivity between device A and device C by pinging between these locally attached devices
(see the “1.5.4 Verify PC Connection to the ONS 15327 (Ping)” section on page 1-50). If the ping is
unsuccessful:
a. Verify that device A and device C are on the same IP subnet.
b. Display the Ethernet card in CTC card view and click the Provisioning > VLAN tabs to verify that
both Port 1 and Port 3 on the card are assigned to the same VLAN.
c. If a port is not assigned to the correct VLAN, click that port column in the VLAN row and set the
port to Tagged or Untag. Click Apply.
Step 8 Repeat Step 7 for devices B and D.
Step 9 Verify that the Ethernet circuit that carries VLAN #1 is provisioned and that ONS 15327 #1 and
ONS 15327 #2 ports also use VLAN #1.
1.6.16 VLAN Cannot Connect to Network Device from Untag Port
Symptom Networks that have a VLAN with one ONS 15327 Ethernet card port set to Tagged and one
ONS 15327 Ethernet card set to Untag might have difficulty implementing Address Resolution Protocol
(ARP) for a network device attached to the Untag port (Figure 1-24). They might also see a higher than
normal runt packets count at the network device attached to the Untag port.This symptom/limitation also
exists when ports within the same card or ports within the same chassis are put on the same VLAN, with
a mix of tagged and untagged.
Figure 1-24 VLAN with Ethernet Ports at Tagged and Untag
Table 1-24 on page 1-65 describes the potential cause(s) of the symptom and the solution(s).
55243
Workstation #1 ONS Node
with Ethernet card
VLAN port set to Tagged
ONS Node
with Ethernet card
VLAN port set to Untag
SONET/SDH
Ethernet
Workstation #2
