Hello,everyone!
I have two catlyst 6509(IOS Version 12.2(17a)SX4).And have about 30 vlan.And every vlan have a dhcp pool. cat6509-1 is the dhcp server for each vlan.And two 6509 run HSRP,cat6509-1 is the master .
long long ago, several PCs in vlan16(IP:10.0.15.0/24 , GW:10.0.15.254 in cat6509-1,the real ip is 10.0.15.252 , in cat6509-2 the real ip is 10.0.15.253) sometimes can't obtain IP address,To resolve this we may restart pc or config the static IP address for them.
But yesterday I config the command in cat6509-1:
(config)#ip dhcp snooping vlan 16
then all PCs in that vlan can't access server (in vlan1 :131.107.0.0/24).And restart several PCs can't obtain IP address from cat6509-1. Then I config the static IP for one of the pc in vlan16 ,and ping 10.0.15.254 timeout ,ping 10.0.15.252 timeout , ping 10.0.15.253 successful.
To resolve this problem,I cancel this command in cat6509-1:
(config)#no ip dhcp snooping vlan 16
but this can't resolve the problem.
finally , I shutdown interface vlan16 in cat6509-1,and setup a dhcp pool in cat6509-2 ,then cat6509-2 is the master in vlan16 HSRP ,and config a static route in cat6509-1:
(config)#ip route 10.0.15.0 255.255.255.0 10.0.0.2(the manage ip of cat6509-2)
the PCs in vlan16 work well.
but this is the temporary method . I want resolve this problem.
do you know the reason of the problem? And how i resolve it,and reture to normal status?
during this time I find some detail,this maybe helpful.
cat6509-1>show log
Jun 23 19:58:32 CTT: dhcp_snooping_draco2_new_dhcp_pak: failed to setup enqueue,
dropping DHCP packet!
Jun 23 19:58:36 CTT: dhcp_snooping_draco2_new_dhcp_pak: failed to setup enqueue,
dropping DHCP packet!
Jun 23 19:58:42 CTT: dhcp_snooping_draco2_new_dhcp_pak: failed to setup enqueue,
dropping DHCP packet!
Jun 23 19:58:45 CTT: dhcp_snooping_draco2_new_dhcp_pak: failed to setup enqueue,
dropping DHCP packet!
Jun 23 19:58:46 CTT: dhcp_snooping_draco2_new_dhcp_pak: failed to setup enqueue,
dropping DHCP packet!
Jun 23 19:58:47 CTT: dhcp_snooping_draco2_enable_mode_change: dhcp snooping disa
bled for vlan 16
cat6509-1>show int vlan16
Vlan16 is administratively down, line protocol is down
Hardware is EtherSVI, address is 0011.5d2a.0800 (bia 0011.5d2a.0800)
Internet address is 10.0.15.252/24
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:01, output 3d00h, output hang never
Last clearing of "show interface" counters 2d05h
Input queue: 76/75/556366/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
39569 packets input, 2611554 bytes, 0 no buffer
Received 317752 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
cat6509-1>
cat6509-1>show ver
Cisco Internetwork Operating System Software
IOS (tm) s72033_rp Software (s72033_rp-PS-M), Version 12.2(17a)SX4, EARLY DEPLOY
MENT RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2004 by cisco Systems, Inc.
Compiled Thu 22-Apr-04 01:44 by pwade
Image text-base: 0x40008FBC, data-base: 0x41C92000
ROM: System Bootstrap, Version 12.2(17r)S2, RELEASE SOFTWARE (fc1)
BOOTLDR: s72033_rp Software (s72033_rp-PS-M), Version 12.2(17a)SX4, EARLY DEPLOY
MENT RELEASE SOFTWARE (fc1)
cat6509-1 uptime is 3 years, 18 weeks, 6 days, 3 hours, 20 minutes
Time since cat6509-1 switched to active is 3 years, 18 weeks, 6 days, 3 hours, 1
9 minutes
System returned to ROM by unknown reload cause - suspect boot_data[BOOT_COUNT] 0
x0, BOOT_COUNT 0, BOOTDATA 19 (SP by power-on)
System restarted at 18:50:07 CTT Thu Feb 15 2007
System image file is "sup-bootflash:s72033-ps-mz.122-17a.SX4.bin"
cisco WS-C6509 (R7000) processor (revision 3.0) with 458752K/65536K bytes of mem
ory.
Processor board ID SAL0825ALSS
SR71000 CPU at 600Mhz, Implementation 0x504, Rev 1.2, 512KB L2 Cache
Last reset from power-on
X.25 software, Version 3.0.0.
Bridging software.
53 Virtual Ethernet/IEEE 802.3 interface(s)
82 Gigabit Ethernet/IEEE 802.3 interface(s)
1917K bytes of non-volatile configuration memory.
8192K bytes of packet buffer memory.
65536K bytes of Flash internal SIMM (Sector size 512K).
Configuration register is 0x2102
cat6509-1>
Thanks in advance
pengyu
