Frame-Relay PVC Switching

R1(config)#int s1/0
R1(config-if)#frame-relay in
R1(config-if)#encapsulation frame-relay intf-type dce
R1(config-if)#clock rate <speed>
R1(config-if)#frame-relay route <pvc-number-1> interface s2/0 <pvc-number-2>

VTP Advertisements

VTP advertisements can occur in three forms:

1. Summary advertisement
1. every 5 minutes
2. information included
1. VTP version
2. domain name
3. configuration revision number
4. time stamp
5. MD5 encryption  hash code
6. number of subset advertisements to follow
3. Subset advertisement
1. sent after VLAN configuration changed.
2. information included:
1. VTP version
2. Subset sequence number 
3. domain name
4. configuration revision number
5. VLAN info field
2. Advertisement requests from clients
1. VTP client can request the VLAN information it lacks.

CCNP SWITCH 642-813 I\Official Certification Guide

Static ARP on Ethernet

R1(config)#arp 1.1.1.1 aaaa.aaaa.aaaa arpa

ARP Timeout

R1(config)#int gi 1/0
! default ARP timeout
R1(config-if)# arp timeout 14400