OLD TS:
TT1: Sw 2 mac address-sticky, R8 wrong client-identifier
TT2: Wrong DHCP pool
TT3: R22, wrong subnet mask
TT4: Modify EIGRP metric weight and correct the prefix-list in R13 “configured to filter out the interface facing R11”
TT5: R22 BGP next-hop-self missing
TT6: Missing BGP ipv6 peer and network ipv6
TT7: R19 wrong authentication and R15 split-horizon missing
TT8: R3-R7 and R4-R8 missing peer, missing nat, wrong import/export
TT9: crypto transform set mode mismatch
TT10: ip nat acces-list incorrect.
Diag:
1. SW3 >> sh ip int bri >> ask host 1 mac address.
2. R15 >> excluded NBMA address
3. Asymmetric with uRPF
Lab:
MST, VRF, EIGRP strongest authentication