Join Chris Bryant for an in-depth discussion in this video Root guard, part of CCNP Troubleshooting (300-135) Cert Prep.
- Time to see root guarding in action!…And of course, the root we're guarding is the root switch.…And right now we're working strictly with VLAN one.…We have three switches in our network.…The switch one or priority of 8192, switch two of 16384,…switch three is at the default which is 32768.…We'll go ahead and do a quick show command.…I actually have it running on switch three.…And you can see the root ID is indeed 8193 for the priority…which is 8192 plus the one for the VLAN one.…
Now lets go over to switch one.…And we got four tip offs that this is the root…but the one we really love is the one that says,…this bridge is the root,…and we're going to stop right there.…So right now we know that if everything stays the same,…switch one will remain the root for VLAN one.…We also know that in most networks, if not all of them,…things are not always going to remain the same.…The key here is that if we go to the trouble…of locking in a particular switch as the root.…We've decided which one it is, we've gone out,…we changed his priority.…
- Port security fundamentals
- EtherChannel negotiation protocols
- Advanced switching options
- NBMA configuration and troubleshooting
- Spotting and fixing authentication type mismatches
- K-values and passive interfaces
- Route redistribution
- NTP authentication
- Border Gateway Protocol (BGP)
- VPNs and VRF-lite
Skill Level Intermediate
1. CCNP TSHOOT 300-135: Switching and EC Fundamentals
2. CCNP TSHOOT 300-135: Advanced Switching Options
3. CCNP TSHOOT 300-135: Analyzing And Troubleshooting OSPF
4. CCNP TSHOOT 300-135: Enhanced Interior Gateway Routing Protocol (EIGRP)
5. CCNP TSHOOT 300-115: Route Redistribution
To autoredistribute (or not)8m 34s
6. TSHOOT 300-115: The Hot Standby Routing Protocol
7. CCNP TSHOOT 300-115: Access Control Lists (ACLs)
8. CCNP TSHOOT 300-115: Border Gateway Protocol (BGP)
9. TSHOOT 300-135: VPNs and VRF-lite
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