Muftasoft TM

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Verifying IPv6 addressing configurations involves confirming that IPv6 addresses, subnet prefixes, default gateways, and other related parameters are correctly configured on routers and hosts. Here's how to verify IPv6 addressing configurations:

### Router Verification:

1. **Interface Status and IPv6 Addresses**:
   - Use the `show ipv6 interface brief` command to display the status and IPv6 addresses configured on router interfaces.
   ```
   Router# show ipv6 interface brief
   ```

2. **Detailed Interface Information**:
   - Use the `show ipv6 interface <interface>` command to display detailed information about a specific interface, including its IPv6 configuration.
   ```
   Router# show ipv6 interface GigabitEthernet0/0
   ```

3. **IPv6 Routing Table**:
   - Use the `show ipv6 route` command to display the IPv6 routing table, showing known routes and next-hop information.
   ```
   Router# show ipv6 route
   ```

### Host Verification:

1. **Network Interface Configuration**:
   - Use the appropriate command (`ipconfig` on Windows, `ifconfig` on Linux) to display the network interface configuration, including IPv6 addresses.
   ```
   Windows:
   C:\> ipconfig /all

   Linux:
   $ ifconfig
   ```

2. **IPv6 Address Configuration**:
   - Verify that the correct IPv6 address, subnet prefix length, and default gateway are configured on the host's network interface.

3. **Router Advertisement (RA) Reception**:
   - Check if the host is receiving Router Advertisement (RA) messages from routers by using appropriate network monitoring tools or commands.

4. **Ping Test**:
   - Perform a ping test from the host to another device on the network or an external IPv6 address to verify IPv6 connectivity.
   ```
   C:\> ping <IPv6_address>
   ```

5. **DNS Resolution**:
   - Verify DNS resolution by attempting to resolve domain names using IPv6 DNS servers.
   ```
   C:\> nslookup example.com
   ```

### Additional Verification:

- **Ping Test Between Hosts**:
  - Perform ping tests between hosts on the same network to verify local IPv6 connectivity.
- **Connectivity Test to External IPv6 Addresses**:
  - Test connectivity to external IPv6 addresses (e.g., IPv6-enabled websites) to ensure Internet connectivity.

By using these verification methods, you can ensure that IPv6 addressing configurations are correctly applied and that devices can communicate over IPv6 networks as expected.