Chapter 3 Lab A - Securing Administrative Access Using AAA and ...
Chapter 3 Lab A - Securing Administrative Access Using AAA and ...
Chapter 3 Lab A - Securing Administrative Access Using AAA and ...
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CCNPv6 TSHOOTALS1#debug ip dhcp snooping packetDHCP Snooping Packet debugging is onALS1#*Mar 1 09:04:48.215: DHCPSNOOP(hlfm_set_if_input): Setting if_input to Fa0/18 for pak. Was not set*Mar 1 09:04:48.215: DHCPSNOOP(hlfm_set_if_input): Clearing if_input for pak.Was Fa0/18*Mar 1 09:04:48.215: DHCPSNOOP(hlfm_set_if_input): Setting if_input to Fa0/18 for pak. Was not set*Mar 1 09:04:48.215: DHCP_SNOOPING: received new DHCP packet from input interface (FastEthernet0/18)*Mar 1 09:04:48.215: DHCP_SNOOPING: process new DHCP packet, message type: DHCPDISCOVER, input interface: Fa0/18, MAC da: ffff.ffff.ffff, MAC sa: 000b.db04.a5cd,IP da: 255.255.255.255, IP sa: 0.0.0.0, DHCP ciaddr: 0.0.0.0, DHCP yiaddr: 0.0.0.0, DHCP siaddr: 0.0.0.0, DHCP giaddr: 0.0.0.0, DHCP chaddr: 000b.db04.a5cd*Mar 1 09:04:48.215: DHCP_SNOOPING: add relay information option.*Mar 1 09:04:48.215: DHCP_SNOOPING_SW: Encoding opt82 CID in vlan-mod-port format*Mar 1 09:04:48.215: DHCP_SNOOPING_SW: Encoding opt82 RID in MAC address format*Mar 1 09:04:48.215: DHCP_SNOOPING: binary dump of relay info option, length: 20data:0x52 0x12 0x1 0x6 0x0 0x4 0x0 0xA 0x1 0x12 0x2 0x8 0x0 0x6 0x0 0x1B 0xC 0x6D 0x8F 0x0*Mar 1 09:04:48.215: DHCP_SNOOPING_SW: bridge packet get invalid mat entry: FFFF.FFFF.FFFF, packet is flooded to ingress VLAN: (10)ALS1#In the above example, a DHCP DISCOVER message with option 82 <strong>and</strong> GIADDR of 0.0.0.0 was sent to DLS1but, because DLS1 does not trust this relay information a reply was not received from the DLS1 DHCP server.ALS1#debug ip dhcp snooping packetDHCP Snooping Packet debugging is onALS1#*Mar 1 09:10:36.904: DHCPSNOOP(hlfm_set_if_input): Setting if_input to Fa0/18 for pak. Was not set*Mar 1 09:10:36.904: DHCPSNOOP(hlfm_set_if_input): Clearing if_input for pak.Was Fa0/18*Mar 1 09:10:36.904: DHCPSNOOP(hlfm_set_if_input): Setting if_input to Fa0/18 for pak. Was not set*Mar 1 09:10:36.904: DHCP_SNOOPING: received new DHCP packet from input interface (FastEthernet0/18)*Mar 1 09:10:36.904: DHCP_SNOOPING: process new DHCP packet, message type: DHCPDISCOVER, input interface: Fa0/18, MAC da: ffff.ffff.ffff, MAC sa: 000b.db04.a5cd,IP da: 255.255.255.255, IP sa: 0.0.0.0, DHCP ciaddr: 0.0.0.0, DHCP yiaddr: 0.0.0.0, DHCP siaddr: 0.0.0.0, DHCP giaddr: 0.0.0.0, DHCP chaddr: 000b.db04.a5cd*Mar 1 09:10:36.904: DHCP_SNOOPING: add relay information option.*Mar 1 09:10:36.904: DHCP_SNOOPING_SW: Encoding opt82 CID in vlan-mod-port format*Mar 1 09:10:36.904: DHCP_SNOOPING_SW: Encoding opt82 RID in MAC address format*Mar 1 09:10:36.904: DHCP_SNOOPING: binary dump of relay info option, length: 20data:0x52 0x12 0x1 0x6 0x0 0x4 0x0 0xA 0x1 0x12 0x2 0x8 0x0 0x6 0x0 0x1B 0xC 0x6D 0x8All contents are Copyright © 1992–2010 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information. Page 10 of 17
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