How do I use offset-list in EIGRP?

To add an offset to incoming and outgoing metrics to routes learned via EIGRP or RIP, use the offset-list {access-list-number | access-list-name} {in | out} offset [interface-type interface-number] router configuration command, as explained in Table 5-2.

What is offset-list in EIGRP?

The offset-list lets you increase the metric when you send a routing update to your neighbor or when you receive it. You can use this for RIP or EIGRP, it is not supported for OSPF. Above you can see that prefix 1.1. 1.0 /24 has its hop count increase by 5, it’s now 6 in total.

How do I verify EIGRP authentication?

To configure MD5 authentication for EIGRP, complete the following steps:

  1. Step 1 Enter configuration mode for the interface on which you want to enable authentication.
  2. Step 2 Specify MD5 authentication for EIGRP packets using the ip authentication mode eigrp autonomous-system md5 interface configuration command.

How do I verify EIGRP configuration?

To verify that the router recognizes EIGRP routes for any neighbors, use the show ip route eigrp command, as shown in Example 3-26. Example 3-27 exhibits the show ip route command, which displays the full IP routing table, including the EIGRP routes.

How does EIGRP determine best path?

EIGRP uses a diffusing update algorithm (DUAL) to identify network paths and provides for fast convergence using precalculated loop-free backup paths. Most distance vector routing protocols use hop count as the metric for routing decisions.

What types of authentication is supported by EIGRP?

EIGRP supports MD5 authentication and (since IOS 15. x) SHA authentication, there is no plaintext authentication.

  • Your router will authenticate the source of each routing update packet that it will receive.
  • Prevents false routing updates from sources that are not approved.
  • Ignore malicious routing updates.

What is hello packets in EIGRP?

Hello packets are sent between EIGRP neighbors for neighbor discovery and recovery. If you send hello packets and receive them then EIGRP will form a neighbor relationship with the other router.

How do I troubleshoot verify EIGRP configuration?

Ensure that router ports are plugged into the correct hubs. Check for filters blocking EIGRP packets. Verify router configurations — check IP addresses, masks, EIGRP AS numbers, and the network numbers defined under EIGRP. Increase the hello-interval/hold-time on congested networks.

How do I check my neighbors EIGRP?

Use the show ip eigrp neighbors command to determine when neighbors become active and inactive. It is also useful for debugging certain types of transport problems.

How does policy based routing work?

Policy-based routing is a process whereby the device puts packets through a route map before routing them. The route map determines which packets are routed to which device next. You might enable policy-based routing if you want certain packets to be routed some way other than the obvious shortest path.