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7 2. Automatic IP address assignment
Yusuke Ogawa (yuogawa) edited this page Apr 4, 2025
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- Load the master data into Network Sketcher and automatically assign an IP address.
- This feature automates the following tasks
- Aggregate IP address usage of other locations and assign new locations from similar ranges.
- Check that the IP address range to be assigned does not overlap with the IP address ranges of all locations.
- Reflect the specification of the number of free IP addresses in the subnet mask to be assigned.
- If only one part of the IP address is included, supplement the rest and pay out IP ranges that are also close to each other within the base.
- Reflect ascending/descending order rule.
- Launch Network Sketcher
- Drag and drop the master file to the Main Panel.
- The Master Panel appears. Click "Auto IP Addressing" under "Extensions.
- Auto IP Addressing Panel is displayed. Select an area to assign IP from "Select Area". *Choose 'WAN(Way_Point)' for the WAN connection segment.
- Click "Run IP Addressing.
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Range Settings
- Starting point of IP address network (CIDR): The starting IP address range to which an IP is assigned; candidates are entered when an Area is selected, but can also be specified.
- Number of free IP addresses in each segment: Specify the number of free IP addresses to be provided in each Layer 3 segment.
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Numbering rules
- Ascending or descending order:
- Ascending order: Set IP assignment in ascending order (.1->.2.->3 ... etc.)
- Descending order: Set IP assignment in descending order (.254->.253.->252 ... etc.)
- Ascending or descending order:
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Completion of missing IP addresses
- Within the same layer 3 segment:
- Keep existing IP address: Preserves the IP address if one part of the IP address configuration exists in the Layer 3 segment.
- Reassign within the same subnet: If one part of an IP address setting exists in a Layer 3 segment, setting whether the IP address is reassigned based on ascending or descending order settings.
- Within the same layer 3 segment:
- Yusuke Ogawa - Security Architect, Cisco | CCIE#17583
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