- Don't assume anything.
- Read exactly what the question asks of you, even if it means doing it word by word.
- Read the entire lab, twice if possible, and try to setup dependencies (eg: trunks->vtp->vlans).
- The diagrams are always correct (eg: if it says Vlan20, it means that the IP address should be on a SVI and not the Physical interface)
- Cut & Paste when possible.
- Do wr often.
- Time management is critical, set a time-frame for troubleshooting and enforce it. Getting stuck 20/30 minutes on a single 2 points task is not the way to go.
- Make sure you are doing the configuration on the correct device, no points for applying perfect QoS on the wrong router.
- Interface level dot1x commands don't appear if the interfaces are in dynamic mode.
- If you are told "there is a syslog server at 10.10.10.10", be sure to check you have a route to get to 10.10.10.10
- Clock rate is your friend.
- Check for 0.0.0.0 mappings in frame-relay. I lost points on PIM related tasks for leaving them on the router (great explanations here).
- Check default commands disabled such as: no ip classless, no ip subnet-zero, no ip cef, no service prompt config (more)
. Easy way of checking most of them: sh run | i no
- Look out for kron tasks and EEM doing nasty things like changing the enable password or killing a routing process.
- "When doing redistribution from BGP prefixes into OSPF, you should make sure that OSPF ASBR Router-id matches originating BGP router ID."
- Use TCL/Macros on SWs for reachability tests (more info). Example:
- macro name PING
do ping 220.127.116.11
do ping 18.104.22.168
You can then use it on the switch:
Switch(config}#macro global apply PING
- Verify, verify, verify and after that verify again.
Thursday, September 16, 2010
Things to remember after a 12 Day CCIE R&S bootcamp
Things to remember after 12 days of bootcamp: