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For the discovery of any IPv6 network, at least one well-connected IPv6 router (preferably with routes to all other networks to be managed by NetMRI) must be placed in the Seed Router list. In some cases, seed routers may not have the full routing tables or be unable to provide full information for some reason. The general rule of thumb is that more seed routers are better, but the connectivity of the seed router(s) also helps determine how many seed routers you need. Avoid having more seed entries than necessary. Also, note that seed routers are included in the CIDRs count that should not exceed 1000 per the recommendation in the Infoblox Discovery Best Practices Guide.
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For effective use of seed routers, you must also provide admin credentials to NetMRI to allow it to pull the key routing and connectivity information, including the IPv6 routing table and the local Neighbor Discovery Cache, from the device. NetMRI uses the standard IPv6 counterparts to standard communications protocols, including SSH and SNMP. |
The Seed Router table lists each defined seed router with its discovery status (as defined in on the Network Explorer –> > Discovery page). By reviewing the discovery status for each seed router, you can determine whether NetMRI should be able to discover the network successfully, or if there are possible configuration errors preventing network discovery without having to wait to see what NetMRI finds.
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- Click the Settings icon > Setup > Discovery Settings > Seed Routers, and then click New.
- Enter the new value into the Seed Router IP Address field.
- (For Operations Center only) From the Filter by Collector: dropdown menu, choose the Collector from the list.
- Choose the network view with which the seed router will be associated, by clicking the Network View drop-down menu. This step is required.
- If this is part of the first discovery of the network, and no other network views are configured, the Network View selector does not appear, and the default Network 1 network view is automatically assigned. Otherwise, choose another network view from the list.
Or - (For Operations Center only) From the Network View drop-down menu, choose the network view to which the seed router for discovery will be assigned. If a network view is divided among two or more Collectors, choose the desired network view based upon the associated Collector name.
- If this is part of the first discovery of the network, and no other network views are configured, the Network View selector does not appear, and the default Network 1 network view is automatically assigned. Otherwise, choose another network view from the list.
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- Once the new value is entered into the Seed Routers table, click Add and Discover to immediately begin the discovery process, or click Add to place the router value into the table for later discovery.