Scenario 7: Provisioning The Ons 15327 Proxy Server - Cisco ONS 15327 User Documentation

ONS 15327 IP Addressing Scenarios
b.
c.
After entering ONS 15327 OSPF area data, click Apply.
Step 9
If you changed the Area ID, the XTC cards will reset, one at a time. The reset will take approximately
10-15 minutes.

4.2.7 Scenario 7: Provisioning the ONS 15327 Proxy Server

The ONS 15327 proxy server is a set of functions that allows you to network ONS 15327s in
environments where visibility and accessibility between ONS 15327s and CTC computers must be
restricted. For example, you can set up a network so that field technicians and network operating center
(NOC) personnel can both access the same ONS 15327s while preventing direct access between the field
and the NOC LAN. To do this, one ONS 15327 is provisioned as a gateway NE (GNE) and the other
ONS 15327s are provisioned as element NEs (ENEs). The GNE ONS 15327 tunnels connections
between a CTC computers and ENE ONS 15327s, providing management capability while preventing
access for non-ONS 15327 management purposes.
The ONS 15327 proxy server performs the following tasks:
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Cisco ONS 15327 User Documentation, R3.3
4-14
In the Create Virtual Link dialog box, complete the following fields (OSPF settings must match
OSPF settings for the ONS 15327 OSPF area):
• Neighbor—The router ID of the Area 0 router.
• Transit Delay (sec)—The service speed. One second is the default.
Hello Int (sec)—The number of seconds between OSPF "hello" packet advertisements sent by
•
OSPF routers. Ten seconds is the default.
Auth Type—If the router where the ONS 15327 is connected uses authentication, choose Simple
•
Password. Otherwise, choose No Authentication.
• Retransmit Int (sec)—Sets the time that will elapse before a packet is resent. Five seconds is the
default.
• Dead Int (sec)—Sets the number of seconds that will pass while an OSPF router's packets are
not visible before its neighbors declare the router down. Forty seconds is the default.
Click OK.
Isolates DCC IP traffic from Ethernet (craft port) traffic and accepts packets based on filtering rules.
The filtering rules depend on whether the packet arrives at the ONS 15327 DCC or XTC Ethernet
interface.
Monitors ARP request packets on its Ethernet port. If the ARP request is from an address that is not
on the current subnet, the ONS 15327creates an entry its ARP table. The ARP entry allows the ONS
15327 to reply to an address over the local Ethernet so craft technicians can connect to ONS 15327s
without changing the IP addresses of their computers.
Processes SNTP/NTP requests. Element ONS 15327 NEs can derive timing from an SNTP/NTP
LAN server through the GNE ONS 15327.
Process SNMPv1 traps. The GNE ONS 15327 receives SNMPv1 traps from the ENE ONS 15327s
forwards them to all provisioned SNMPv1 trap destinations.
Chapter 4 IP Networking
June 2002