Important commands used for validating authentication between BGP peers. This is almost identical to IPv4. show ipv6 bgp summary - Allows you to verify that neighbor relationships are properly functioningshow ipv6 bgp neighbors <neighbor ID> | include BGP - Will provide a consolidated output of the BGP neighbor details to indicate the BGP state, where … Continue reading 16.8 BGP for IPv6 Authentication Verification
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16.7 BGP for IPv6 Authentication Configuration
The configuration process is almost identical to IPv4. BGP authentication configuration is very simple. You specify the neighbor or peer-group, and include the command syntax password <password> after it. If keys are changed, it is important to update both/all sides of the authentication before the expiration of hold-down timers. Modifying the password will not immediately … Continue reading 16.7 BGP for IPv6 Authentication Configuration
16.6 BGP Authentication Verification
Important commands used for validating authentication between BGP peers: show ip bgp summary - Allows you to verify that neighbor relationships are properly functioningshow ip bgp neighbors <neighbor ID> | include BGP - Will provide a consolidated output of the BGP neighbor details to indicate the BGP state, where Established is preferred and indicates a … Continue reading 16.6 BGP Authentication Verification
16.5 BGP Authentication Configuration
BGP authentication configuration is very simple. You specify the neighbor or peer-group, and include the command syntax password <password> after it. If keys are changed, it is important to update both/all sides of the authentication before the expiration of hold-down timers. Modifying the password will not immediately cause outage, but any BGP packets received will … Continue reading 16.5 BGP Authentication Configuration
16.4 BGP Authentication Configuration Checklist
BGP uses MD5 to authenticate every BGP routing protocol TCP segment and establish peering. The computed MD5 hash is based on the following - IP headerTCP headerTCP PayloadShared Secret (key or password) The computed hash is stored in TCP option 19. The router authenticates the source of each BGP routing protocol packet it receives.
16.3 OSPF Authentication Configuration
OSPFv2 supports two authentication methods: MD5 and plaintext/simple. The authentication type signals no authentication (0), plaintext authentication (1), or MD5-based authentication (2). The hash is included in the authentication field and is based on the hash of the key and the packet message body. Configuring plaintext authentication in OSPFv2: Assign the key to the interface, … Continue reading 16.3 OSPF Authentication Configuration
16.2 OSPF Authentication Configuration Checklist
There are two configuration items that must be addressed to successfully enable OSPF authentication. OSPF does not use authentication by default. There are two steps to configure OSPF authentication. Note: You could conceivably configure all OSPFv2 authentication from interface configuration mode.
15.6 EIGRP for IPv6 Authentication Verification
When troubleshooting authentication issues, it is presumed the router adjacencies are configured correctly, so when deploying, do this first so the scope of your troubleshooting can be consolidated to authentication mechanisms, and not something like passive interfaces, etc. Some commands that are helpful in troubleshooting authentication for EIGRP: show key chaindebug eigrp packetsshow ip eigrp … Continue reading 15.6 EIGRP for IPv6 Authentication Verification
15.5 Configuring Authentication in Named EIGRP
Consider the following illustration: Here is another example of its configuration: Note the following. The use of af-default in the address-family configuration mode allows for a default configuration to be deployed on all interfaces named in the configuration thereafter. For example, the interfaces Eth0/0-2 all inherit the default configuration, and individual configurations entered on each … Continue reading 15.5 Configuring Authentication in Named EIGRP
15.4 EIGRP for IPv6 Authentication Configuration
Consider the following illustration: Authentication for EIGRP IPv6 is the same as for IPv4. The only difference is in the ipv6 keyword associated with the authentication mode and authentication key-chain interface commands.