hello,By default serial interface is DTE. IP address/ Encapsualtion is your choice. If you choose not to configure the encapsulation by default HDLC will be configured. You have to configure the follwing commands on your DCE side interface ip address...

Hello Ponparti,Change the port on the switch/hub where 1751 is connected.Also verify the existing port for any VLAN access and remove that. RegardsSuresh Krishnamurthy

hi,Please set your ip mtu size=1496and verifyRegardsKrishnamurthy Suresh

hi,check whether this link is usefulhttp://www.cisco.com/warp/public/788/voip/fr_traffic.htmlRegardsKrishnamurthy Suresh

hi,use the following command to see the reqd. outputRouter#show ip arp For other options:Router#sh ip arp ? ATM ATM interface Async Async interface BRI ISDN Basic Rate Interface Ethernet ...