Cisco ONS 15454 SDH Specifications download pdf (Page 381)

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Cisco ONS 15454 SDH Installation and Operations Guide, R3.3

May 2002

Chapter 9 Ethernet Operation

E Series VLAN Support

Step 14 Choose the VC4 that will carry the circuit from the VC4 menu and click Next.

Note For Ethernet manual cross-connects, the same ONS 15454 SDH serves as both source and

destination.

Step 15 Confirm that the following information is correct:

• Circuit name

• Circuit type

• Circuit size

• ONS 15454 SDH nodes included in this circuit

Note If the circuit information is not correct use the Back button, then redo the procedure with the

correct information. You can also click Finish, highlight the completed circuit, click the Delete

button and start the procedure from the beginning.

Step 16 Click Finish.

Step 17 You now need to provision the Ethernet ports. For port provisioning instructions, see the “Provision

G1000-4 Ethernet Ports” procedure on page 9-7.

Step 18 To complete the procedure, repeat Steps 1 – 16 at the second ONS 15454 SDH.

Note The appropriate STM circuit must exist in the non-ONS equipment to connect the two STMs from the

ONS 15454 SDH Ethernet manual cross-connect endpoints.

Caution If a CARLOSS alarm repeatedly appears and clears on an Ethernet manual cross connect, the two

Ethernet circuits may have a circuit-size mismatch. For example, a circuit size of VC4-2c was configured

on the first ONS 15454 SDH and circuit size of VC4 was configured on the second ONS 15454 SDH.

To troubleshoot this occurrence of the CARLOSS alarm, refer to the CARLOSS alarm troubleshooting

procedure in the Alarm Troubleshooting chapter of the Cisco ONS 15454 SDH Troubleshooting and

Maintenance Guide.

9.6 E Series VLAN Support

Users can provision up to 509 VLANs with the CTC software. Specific sets of ports define the broadcast

domain for the ONS 15454 SDH. The definition of VLAN ports includes all Ethernet and

packet-switched SDH port types. All VLAN IP address discovery, flooding, and forwarding is limited to

these ports.

The ONS 15454 SDH 802.1Q-based VLAN mechanism provides logical isolation of subscriber LAN

traffic over a common SDH transport infrastructure. Each subscriber has an Ethernet port at each site,

and each subscriber is assigned to a VLAN. Although the subscriber’s VLAN data flows over shared

circuits, the service appears to the subscriber as a private data transport.

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Cisco ONS 15454 SDH Specifications Page 381