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vlan interface configuration

Posted on 2009-05-12
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Last Modified: 2012-05-06
on my vlan1 interface on all my switches have the "no ip route-cache" command. I have one switch without that command under interface vlan1. Most all users connected to that switch are complaining of slow web access, file access, and network printing. Would not having the "no ip route-cache" command be why???
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Question by:dtadmin
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18 Comments
 
LVL 43

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by:JFrederick29
ID: 24368271
No as I'm assuming this switch is a "layer2" switch meaning the VLAN1 interface is only for management purposes.  Is the uplink saturated? or have errors?
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Author Comment

by:dtadmin
ID: 24368304
the uplink to my core switch has no errors and is only 3 to 5% saturated.
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by:dtadmin
ID: 24368316
this switch is a Cisco Catalyst 3750 layer 3 switch
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LVL 43

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by:JFrederick29
ID: 24368363
But is it routing? i.e. is the VLAN1 interface on this switch the clients default gateway or is it the core?
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by:dtadmin
ID: 24368379
their default gateway is the core switch.
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LVL 43

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by:JFrederick29
ID: 24368393
Yeah, so it has nothing to do with it.  Do a "show int summary" and see if any interfaces are saturated.  What are they communicating with?  Are other clients off other switches reporting slowness to the same apps?
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Author Comment

by:dtadmin
ID: 24368460
Institute_3750#sh int summary

 *: interface is up
 IHQ: pkts in input hold queue     IQD: pkts dropped from input queue
 OHQ: pkts in output hold queue    OQD: pkts dropped from output queue
 RXBS: rx rate (bits/sec)          RXPS: rx rate (pkts/sec)
 TXBS: tx rate (bits/sec)          TXPS: tx rate (pkts/sec)
 TRTL: throttle count

  Interface               IHQ   IQD  OHQ   OQD  RXBS RXPS  TXBS TXPS TRTL
-------------------------------------------------------------------------
* Vlan1                    0     0    0     0  4000    6  1000    2    0
  Vlan2                    0     0    0     0     0    0     0    0    0
  FastEthernet1/0/1        0     0    0     0     0    0     0    0    0
  FastEthernet1/0/2        0     0    0     0     0    0     0    0    0
  FastEthernet1/0/3        0     0    0     0     0    0     0    0    0
  FastEthernet1/0/4        0     0    0     0     0    0     0    0    0
  FastEthernet1/0/5        0     0    0     0     0    0     0    0    0
  FastEthernet1/0/6        0     0    0     0     0    0     0    0    0
  FastEthernet1/0/7        0     0    0     0     0    0     0    0    0
  FastEthernet1/0/8        0     0    0     0     0    0     0    0    0
  FastEthernet1/0/9        0     0    0     0     0    0     0    0    0
  FastEthernet1/0/10       0     0    0     0     0    0     0    0    0
* FastEthernet1/0/11       0     0    0     0     0    0     0    0    0
  FastEthernet1/0/12       0     0    0     0     0    0     0    0    0
* FastEthernet1/0/13       0     0    0     0     0    0     0    0    0
  FastEthernet1/0/14       0     0    0     0     0    0     0    0    0
  FastEthernet1/0/15       0     0    0     0     0    0     0    0    0
  FastEthernet1/0/16       0     0    0     0     0    0     0    0    0
  FastEthernet1/0/17       0     0    0     0     0    0     0    0    0
  FastEthernet1/0/18       0     0    0     0     0    0     0    0    0
  FastEthernet1/0/19       0     0    0     0     0    0     0    0    0
  FastEthernet1/0/20       0     0    0     0     0    0     0    0    0
* FastEthernet1/0/21       0     0    0     0     0    0     0    0    0
* FastEthernet1/0/22       0     0    0     0     0    0     0    0    0
  FastEthernet1/0/23       0     0    0     0     0    0     0    0    0
  FastEthernet1/0/24       0     0    0     0     0    0     0    0    0
  FastEthernet1/0/25       0     0    0     0     0    0     0    0    0
  FastEthernet1/0/26       0     0    0     0     0    0     0    0    0
  FastEthernet1/0/27       0     0    0     0     0    0     0    0    0
* FastEthernet1/0/28       0     0    0     0 184000    0     0    0    0
  FastEthernet1/0/29       0     0    0     0     0    0     0    0    0
  FastEthernet1/0/30       0     0    0     0     0    0     0    0    0
* FastEthernet1/0/31       0     0    0     0     0    0     0    0    0
  FastEthernet1/0/32       0     0    0     0     0    0     0    0    0
  FastEthernet1/0/33       0     0    0     0     0    0     0    0    0
* FastEthernet1/0/34       0     0    0     0     0    0  1000    2    0
  FastEthernet1/0/35       0     0    0     0     0    0     0    0    0
* FastEthernet1/0/36       0     0    0     0  1000    1  2000    2    0
  FastEthernet1/0/37       0     0    0     0     0    0     0    0    0
  FastEthernet1/0/38       0     0    0     0     0    0     0    0    0
* FastEthernet1/0/39       0     0    0     0     0    0     0    0    0
  FastEthernet1/0/40       0     0    0     0     0    0     0    0    0
* FastEthernet1/0/41       0     0    0     0  5000    1  1000    2    0
  FastEthernet1/0/42       0     0    0     0     0    0     0    0    0

  Interface               IHQ   IQD  OHQ   OQD  RXBS RXPS  TXBS TXPS TRTL
-------------------------------------------------------------------------
  FastEthernet1/0/43       0     0    0     0     0    0     0    0    0
  FastEthernet1/0/44       0     0    0     0     0    0     0    0    0
  FastEthernet1/0/45       0     0    0     0     0    0     0    0    0
* FastEthernet1/0/46       0     0    0     0     0    0     0    0    0
  FastEthernet1/0/47       0     0    0     0     0    0     0    0    0
* FastEthernet1/0/48       0     0    0     0     0    0 439000  620    0
* GigabitEthernet1/0/1     0     0    0     0 987000  724 336000   78    0
  GigabitEthernet1/0/2     0     0    0     0     0    0     0    0    0
  GigabitEthernet1/0/3     0     0    0     0     0    0     0    0    0
  GigabitEthernet1/0/4     0     0    0     0     0    0     0    0    0
  FastEthernet2/0/1        0     0    0     0     0    0     0    0    0
* FastEthernet2/0/2        0     0    0     0     0    0  1000    1    0
  FastEthernet2/0/3        0     0    0     0     0    0     0    0    0
  FastEthernet2/0/4        0     0    0     0     0    0     0    0    0
* FastEthernet2/0/5        0     0    0     0     0    1  6000    1    0
  FastEthernet2/0/6        0     0    0     0     0    0     0    0    0
  FastEthernet2/0/7        0     0    0     0     0    0     0    0    0
  FastEthernet2/0/8        0     0    0     0     0    0     0    0    0
* FastEthernet2/0/9        0     0    0     0  3000    1  1000    1    0
* FastEthernet2/0/10       0     0    0     0     0    1  1000    1    0
* FastEthernet2/0/11       0     0    0     0     0    0  1000    1    0
  FastEthernet2/0/12       0     0    0     0     0    0     0    0    0
  FastEthernet2/0/13       0     0    0     0     0    0     0    0    0
  FastEthernet2/0/14       0     0    0     0     0    0     0    0    0
* FastEthernet2/0/15       0     0    0     0     0    0  1000    1    0
  FastEthernet2/0/16       0     0    0     0     0    0     0    0    0
  FastEthernet2/0/17       0     0    0     0     0    0     0    0    0
* FastEthernet2/0/18       0     0    0     0  1000    0  1000    1    0
* FastEthernet2/0/19       0     0    0     0     0    0  1000    1    0
  FastEthernet2/0/20       0     0    0     0     0    0     0    0    0
* FastEthernet2/0/21       0     0    0     0     0    0 88000    1    0
  FastEthernet2/0/22       0     0    0     0     0    0     0    0    0
  FastEthernet2/0/23       0     0    0     0     0    0     0    0    0
  FastEthernet2/0/24       0     0    0     0     0    0     0    0    0
* FastEthernet2/0/25       0     0    0     0     0    0  1000    1    0
  FastEthernet2/0/26       0     0    0     0     0    0     0    0    0
* FastEthernet2/0/27       0     0    0     0  3000    1 39000    2    0
  FastEthernet2/0/28       0     0    0     0     0    0     0    0    0
* FastEthernet2/0/29       0     0    0     0     0    1  1000    1    0
  FastEthernet2/0/30       0     0    0     0     0    0     0    0    0
* FastEthernet2/0/31       0     0    0     0     0    0  1000    1    0
* FastEthernet2/0/32       0     0    0     0     0    0  1000    1    0
  FastEthernet2/0/33       0     0    0     0     0    0     0    0    0
  FastEthernet2/0/34       0     0    0     0     0    0     0    0    0
  FastEthernet2/0/35       0     0    0     0     0    0     0    0    0
* FastEthernet2/0/36       0     0    0     0     0    0  1000    1    0
  FastEthernet2/0/37       0     0    0     0     0    0     0    0    0
* FastEthernet2/0/38       0     0    0     0     0    0  1000    1    0
  FastEthernet2/0/39       0     0    0     0     0    0     0    0    0
* FastEthernet2/0/40       0     0    0     0     0    0  1000    1    0
  FastEthernet2/0/41       0     0    0     0     0    0     0    0    0

  Interface               IHQ   IQD  OHQ   OQD  RXBS RXPS  TXBS TXPS TRTL
-------------------------------------------------------------------------
* FastEthernet2/0/42       0     0    0     0  1000    1  1000    1    0
  FastEthernet2/0/43       0     0    0     0     0    0     0    0    0
  FastEthernet2/0/44       0     0    0     0     0    0     0    0    0
  FastEthernet2/0/45       0     0    0     0     0    0     0    0    0
  FastEthernet2/0/46       0     0    0     0     0    0     0    0    0
  FastEthernet2/0/47       0     0    0     0     0    0     0    0    0
  FastEthernet2/0/48       0     0    0     0     0    0     0    0    0
  GigabitEthernet2/0/1     0     0    0     0     0    0     0    0    0
  GigabitEthernet2/0/2     0     0    0     0     0    0     0    0    0
  GigabitEthernet2/0/3     0     0    0     0     0    0     0    0    0
  GigabitEthernet2/0/4     0     0    0     0     0    0     0    0    0
  FastEthernet3/0/1        0     0    0     0     0    0     0    0    0
  FastEthernet3/0/2        0     0    0     0     0    0     0    0    0
  FastEthernet3/0/3        0     0    0     0     0    0     0    0    0
  FastEthernet3/0/4        0     0    0     0     0    0     0    0    0
* FastEthernet3/0/5        0     0    0     0     0    0  1000    1    0
  FastEthernet3/0/6        0     0    0     0     0    0     0    0    0
* FastEthernet3/0/7        0     0    0     0 18000    2 11000    3    0
  FastEthernet3/0/8        0     0    0     0     0    0     0    0    0
  FastEthernet3/0/9        0     0    0     0     0    0     0    0    0
  FastEthernet3/0/10       0     0    0     0     0    0     0    0    0
  FastEthernet3/0/11       0     0    0     0     0    0     0    0    0
  FastEthernet3/0/12       0     0    0     0     0    0     0    0    0
  FastEthernet3/0/13       0     0    0     0     0    0     0    0    0
* FastEthernet3/0/14       0     0    0     0 18000    1 48000    1    0
  FastEthernet3/0/15       0     0    0     0     0    0     0    0    0
* FastEthernet3/0/16       0     0    0     0 16000    6  6000    4    0
* FastEthernet3/0/17       0     0    0     0     0    0  1000    1    0
  FastEthernet3/0/18       0     0    0     0     0    0     0    0    0
* FastEthernet3/0/19       0     0    0     0     0    0  1000    1    0
* FastEthernet3/0/20       0     0    0     0     0    0  1000    1    0
  FastEthernet3/0/21       0     0    0     0     0    0     0    0    0
* FastEthernet3/0/22       0     0    0     0     0    0 128000    1    0
  FastEthernet3/0/23       0     0    0     0     0    0     0    0    0
* FastEthernet3/0/24       0     0    0     0     0    0  1000    1    0
  FastEthernet3/0/25       0     0    0     0     0    0     0    0    0
  FastEthernet3/0/26       0     0    0     0     0    0     0    0    0
* FastEthernet3/0/27       0     0    0     0     0    0  1000    1    0
  FastEthernet3/0/28       0     0    0     0     0    0     0    0    0
  FastEthernet3/0/29       0     0    0     0     0    0     0    0    0
  FastEthernet3/0/30       0     0    0     0     0    0     0    0    0
* FastEthernet3/0/31       0     0    0     0     0    0  1000    1    0
  FastEthernet3/0/32       0     0    0     0     0    0     0    0    0
  FastEthernet3/0/33       0     0    0     0     0    0     0    0    0
  FastEthernet3/0/34       0     0    0     0     0    0     0    0    0
  FastEthernet3/0/35       0     0    0     0     0    0     0    0    0
  FastEthernet3/0/36       0     0    0     0     0    0     0    0    0
  FastEthernet3/0/37       0     0    0     0     0    0     0    0    0
  FastEthernet3/0/38       0     0    0     0     0    0     0    0    0
  FastEthernet3/0/39       0     0    0     0     0    0     0    0    0
  FastEthernet3/0/40       0     0    0     0     0    0     0    0    0

  Interface               IHQ   IQD  OHQ   OQD  RXBS RXPS  TXBS TXPS TRTL
-------------------------------------------------------------------------
  FastEthernet3/0/41       0     0    0     0     0    0     0    0    0
  FastEthernet3/0/42       0     0    0     0     0    0     0    0    0
  FastEthernet3/0/43       0     0    0     0     0    0     0    0    0
  FastEthernet3/0/44       0     0    0     0     0    0     0    0    0
  FastEthernet3/0/45       0     0    0     0     0    0     0    0    0
  FastEthernet3/0/46       0     0    0     0     0    0     0    0    0
  FastEthernet3/0/47       0     0    0     0     0    0     0    0    0
* FastEthernet3/0/48       0     0    0     0     0    0  1000    1    0
  GigabitEthernet3/0/1     0     0    0     0     0    0     0    0    0
  GigabitEthernet3/0/2     0     0    0     0     0    0     0    0    0
  GigabitEthernet3/0/3     0     0    0     0     0    0     0    0    0
  GigabitEthernet3/0/4     0     0    0     0     0    0     0    0    0
Institute_3750#



application response is ok everywhere else. Only the users behind this switch are complaining. The link between this switch and the core switch is a 1gig link.
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LVL 43

Expert Comment

by:JFrederick29
ID: 24368563
Yeah, and its definitely not over used.  Doesn't appear to be the network.  Any changes recently specific to the users off this switch?

Are the servers directly off the core switch or off a different switch?
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Author Comment

by:dtadmin
ID: 24368571
the servers are directly off the core switch.
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LVL 43

Expert Comment

by:JFrederick29
ID: 24368600
Well then, that limits things.  Are these users on a different subnet than the rest of the network or is it a single VLAN and subnet?
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Author Comment

by:dtadmin
ID: 24368696
these users are on vlan 206 which has a subnet of 10.1.6.0/24. The servers are on vlan 1 which has a subnet of 10.1.200.0/255.255.254.0
0
 

Author Comment

by:dtadmin
ID: 24368803
CAT-6509#sh run int vlan206
Building configuration...

Current configuration : 143 bytes
!
interface Vlan206
 description UsersInstitute
 ip address 10.1.6.1 255.255.255.0
 ip access-group 106 in
 ip helper-address 10.1.200.16
end

CAT-6509#sh run int vlan1
Building configuration...

Current configuration : 112 bytes
!
interface Vlan1
 description Servers
 ip address 10.1.200.1 255.255.254.0
 ip helper-address 10.1.200.16
end

CAT-6509#


10.1.200.16 is my primary DNS server
0
 

Author Comment

by:dtadmin
ID: 24369172
10.1.200.16 is also our DHCP server which is what the clients get their IP addressing from.
0
 
LVL 43

Expert Comment

by:JFrederick29
ID: 24373677
From a command prompt on a PC on this switch, do the following:

ping 10.1.200.16 -l 1500 -n 20

Also, post the following from the switch:

show version
show proc cpu   <--just the top lines
show mem   <--just the top lines

If this is the only switch where people are complaining, you could try rebooting it.  You could have run into a bug or be low on resources.
0
 

Author Comment

by:dtadmin
ID: 24373708
Institute_3750#sh ver
Cisco IOS Software, C3750 Software (C3750-IPBASE-M), Version 12.2(35)SE5, RELEASE SOFTWARE (fc1)
Copyright (c) 1986-2007 by Cisco Systems, Inc.
Compiled Thu 19-Jul-07 19:15 by nachen
Image text-base: 0x00003000, data-base: 0x01080000

ROM: Bootstrap program is C3750 boot loader
BOOTLDR: C3750 Boot Loader (C3750-HBOOT-M) Version 12.2(25r)SEC, RELEASE SOFTWARE (fc4)

Institute_3750 uptime is 3 days, 23 minutes
System returned to ROM by power-on
System image file is "flash:c3750-ipbase-mz.122-35.SE5/c3750-ipbase-mz.122-35.SE5.bin"

cisco WS-C3750-48P (PowerPC405) processor (revision L0) with 118784K/12280K bytes of memory.
Processor board ID FDO1231Y1ZT
Last reset from power-on
2 Virtual Ethernet interfaces
144 FastEthernet interfaces
12 Gigabit Ethernet interfaces
The password-recovery mechanism is enabled.

512K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address       : 00:22:91:E5:9D:80
Motherboard assembly number     : 73-9675-12
Power supply part number        : 341-0029-05
Motherboard serial number       : FDO123107JD
Power supply serial number      : DTN122547KL
Model revision number           : L0
Motherboard revision number     : A0
Model number                    : WS-C3750-48PS-S
System serial number            : FDO1231Y1ZT
SFP Module assembly part number : 73-7757-03
SFP Module revision Number      : A0
SFP Module serial number        : FDO123109FQ
Top Assembly Part Number        : 800-25858-04
Top Assembly Revision Number    : A0
Version ID                      : V06
CLEI Code Number                : COMUX10ARA
Hardware Board Revision Number  : 0x01


Switch   Ports  Model              SW Version              SW Image
------   -----  -----              ----------              ----------
*    1   52     WS-C3750-48P       12.2(35)SE5             C3750-IPBASE-M
     2   52     WS-C3750-48P       12.2(35)SE5             C3750-IPBASE-M
     3   52     WS-C3750-48P       12.2(35)SE5             C3750-IPBASE-M


Switch 02
---------
Switch Uptime                   : 3 days, 23 minutes
Base ethernet MAC Address       : 00:22:BE:02:92:00
Motherboard assembly number     : 73-9675-12
Power supply part number        : 341-0029-05
Motherboard serial number       : FDO12310JD3
Power supply serial number      : DTN122547KN
Model revision number           : L0
Motherboard revision number     : A0
Model number                    : WS-C3750-48PS-S
System serial number            : FDO1231Y1ZU
SFP Module assembly part number : 73-7757-03
SFP Module revision number      : A0
SFP Module serial number        : FDO1231093V
Top assembly part number        : 800-25858-04
Top assembly revision number    : A0
Version ID                      : V06
CLEI Code Number                : COMUX10ARA

Switch 03
---------
Switch Uptime                   : 3 days, 23 minutes
Base ethernet MAC Address       : 00:22:91:E6:CC:00
Motherboard assembly number     : 73-9675-12
Power supply part number        : 341-0029-05
Motherboard serial number       : FDO123107NB
Power supply serial number      : DTN122542DM
Model revision number           : L0
Motherboard revision number     : A0
Model number                    : WS-C3750-48PS-S
System serial number            : FDO1231Y1X2
SFP Module assembly part number : 73-7757-03
SFP Module revision number      : A0
SFP Module serial number        : FDO123109TD
Top assembly part number        : 800-25858-04
Top assembly revision number    : A0
Version ID                      : V06
CLEI Code Number                : COMUX10ARA

Configuration register is 0xF
_____________________________________________________________

CPU utilization for five seconds: 11%/0%; one minute: 8%; five minutes: 8%

_____________________________________________________________

Institute_3750#show mem
                Head    Total(b)     Used(b)     Free(b)   Lowest(b)  Largest(b)
Processor    1D0AA50    91444656    28563528    62881128    61029676    60509704
      I/O    7400000    12574720     8435000     4139720     3601356     3642576








0
 
LVL 43

Expert Comment

by:JFrederick29
ID: 24374100
Switch looks fine and it appears it was rebooted a little over 3 days ago.  Was this your attempt to resolve the issue? or did you upgrade software? or did the problem start after the reboot?
0
 

Author Comment

by:dtadmin
ID: 24374110
I never rebooted it or upgraded it. I may have been a loss of power
0
 
LVL 43

Accepted Solution

by:
JFrederick29 earned 500 total points
ID: 24374152
Okay, well, your network seems fine.  You can try rebooting the stack again just to rule it out anyway.  How about the ping?

ping 10.1.200.16 -l 1500 -n 20
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