Cabletron Systems SSIM-R8-02 Specifications download pdf (Page 96)

Configuring Packet-over-SONET Links

76 Enterasys Xpedition User Reference Manual

you can configure the interface as part of a VLAN for PoS links. You can also configure

multiple IP addresses for each interface, as described in Configuring IP Interfaces and

Parameters on page 96.

When creating the IP interface for a PoS link, you can either specify the peer address if it is

known (static address), or allow the peer address to be automatically discovered via IPCP

negotiation (dynamic address). If the peer address is specified, any address supplied by the

peer during IPCP negotiation is ignored.

IP interfaces for PoS links can have primary and secondary IP addresses. The primary

addresses may be either dynamic or static, but the secondary address must be static. This

is because only the primary addresses of both the local and peer devices are exchanged

during IP Control Protocol (IPCP) negotiation.

Source filtering and ACLs can be applied to an IP interface for a PoS link. Unlike WAN

ports, the applied filter or ACL presents no limitation. Different filters can be configured

on different PoS ports.

Configuring Packet-over-SONET Links

To configure a packet-over-SONET link:

1. On the XP, assign an interface to the PoS port to which you will connect via fiber cable

in a point-to-point link. Assign an IP address and netmask to the interface. If possible,

determine the peer address of the interface at the other end of the point-to-point link.

In the following example, the port so.13.1 on the XP will be associated with the

interface pos11:

2. Create a point-to-point interface with the interface create command, specifying the IP

address and netmask for the interface on the XP and the peer address of the other end

of the connection:

interface create ip pos11 address-netmask 20.11.11.20/24 peer-address 20.11.11.21 port so.13.1

Router A Router B

pos11

so.13.1

20.11.11.20/24

pos21

20.11.11.21/24

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Cabletron Systems SSIM-R8-02 Specifications Page 96