Cisco SCE 1000 2xGBE User's Guide download pdf (Page 98)

Chapter 4 Installation and Startup

System Configuration

SCE 1000 2xGBE Release 2.0.10 User Guide

4-36 OL-7117-02

Table 4-11 IP address/Wildcard bit examples

Initial IP address Wildcard bits Range

10.1.1.0 0.0.0.255 10.1.1.0–10.1.1.255

10.1.1.0 0.0.0.63 10.1.1.0–10.1.1.63

10.1.1.0 0.0.0.0 10.1.1.0 (individual entry)

Order of Entries

The order of the entries in the list is important. The entries in the list are tested sequentially, and

the action is determined by the first entry that matches the connecting IP address. Therefore, when

the entry “any” appears in an Access Control List, all succeeding entries are irrelevant.

Consider two hypothetical ACLs containing the same entries in a different order.

The following list would permit access to all IP addresses, including 10.1.1.0:

permit any

deny 10.1.1.0

Note that the above list could not actually be created using the setup utility, since after the “any”

entry, no other entries could be added to the list.

The following list will deny access to IP address 10.1.1.0, but permit access to all others:

deny 10.1.1.0

permit any

If no entry in the assigned Access Control List matches the connection, or if the Access Control

List is empty, the default action is deny.

For a full explanation of how access control lists work, see Configuring Access Control Lists

(ACLs) (on page 6-2).

To create the access control lists:

Step 1 Enter the Access Control Lists configuration menu.

Would you like to enter the Access lists configuration menu? [no]: y

Type y and press Enter.

The Access Control Lists configuration dialog begins.

Step 2 You have the option of creating or modifying Access Control Lists, or skipping this

section and proceeding directly to assign the existing ACLs to the desired management

interfaces.

Would you like create new Access lists or modify existing lists? [no]: y

If you choose not to create or edit Access Control Lists, skip to Step 9: Configuring the

Topology-Dependent Parameters (on page 4-41).

Step 3 Type the number of the Access Control List to be configured (1 through 99) and press

Enter.

Note that there is no default for this parameter.

1 ... 97 98 99 ... 490

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Cisco SCE 1000 2xGBE User's Guide Page 98