Cisco Systems 2020 manual Host Name, IP Addresses and Masks

Models: 2020

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Host Name

Basic LS2020 Configuration Tasks

Host Name

You must assign a unique host name to each LS2020 node. Typically, a name can be chosen to reflect the node’s geographic location (for example, Tokyo2) or its function within an organization (for example, mfg3).

The name may consist of any combination of letters and numbers up to 32 characters, but it must not begin with a number. Thus, Pensacola23 is a valid host name, but 23Pensacola is not; similarly, Pensacola.23 is not a valid name, since it contains a character other than a letter or number.

IP Addresses and Masks

For each LS2020 node, you must provide from one to four IP addresses and associated network masks, as described below:

Primary NP address and mask (for every LS2020 node in the network)

Nodes in an LS2020 network use their primary NP addresses to communicate network management traffic to each other.

Note All NP addresses within the same LS2020 network must have the same network number, and each node must have a unique host ID.

Subnet mask for the primary NP address

The subnet mask specifies which portion of the IP address is the network number and which portion is the host ID. This mask should be configured to be the same for all nodes in a given LS2020 network.

Secondary NP address, only if a backup NP is present in the chassis

If a node has a second (backup) NP, the node uses its primary and secondary NP addresses to pass network management traffic between the two NPs within the node. The primary NP address is used by whichever NP is active.

Note All NP addresses within the same LS2020 network must have the same network number, and each node in the network must have a unique host ID.

Ethernet address and mask of the NP (when either the primary or secondary NP is connected to an Ethernet LAN)

An Ethernet LAN may be attached to the NP for communicating network management traffic between the node and the NMS. If an Ethernet LAN is connected to the NP, the NP’s Ethernet IP address must be configured. If a backup NP is present in the chassis, both NPs must be attached to the same Ethernet segment. The NP’s Ethernet IP address is used by whichever NP is primary (active).

Note This Ethernet IP address has the network number of the attached Ethernet LAN (which must be different from the network number of the LS2020 network). The Ethernet IP address also has a host number that is assigned by the Ethernet LAN administrator.

Hardware Installation 2-15

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Cisco Systems 2020 manual Host Name, IP Addresses and Masks