cisco 2960g problems 2

[dapdacompx]

I have a cisco 2960g 24 port switch that has been on the network for about 6 months, The switch is being used just as a switch and after a recent power outage the computers connected to this switch are now taking excessively long time to aquire DHCP address from my server. I have another switch a 3560g connected to port 25 of this 2960g switch and all the computers connected to this switch connect in under 30 seconds. The uplink from the server connects to port 26 on the 2960g switch. Nothing else has changed, can I be having negotiation issues on the 2960g switch, how can I determine that? The document says because the switch is all gigabyte the ports are all mdx and fixed in auto speed on all ports. The switch does not have a speed command. Some of the computers need to connect at gigabyte to this switch others at 10/100 but the problem occurs on all ports Any ideas?

no aaa new-model
ip subnet-zero
!
!
!
!
no file verify auto
spanning-tree mode pvst
spanning-tree extend system-id
!
vlan internal allocation policy ascending
!
interface GigabitEthernet0/1
!
interface GigabitEthernet0/2
!
interface GigabitEthernet0/3
!
interface GigabitEthernet0/4
!
interface GigabitEthernet0/5
!
interface GigabitEthernet0/6
!
interface GigabitEthernet0/7
!
interface GigabitEthernet0/8
!
interface GigabitEthernet0/9
!
interface GigabitEthernet0/10
!
interface GigabitEthernet0/11
!
interface GigabitEthernet0/12
!
interface GigabitEthernet0/13
!
interface GigabitEthernet0/14
!
interface GigabitEthernet0/15
!
interface GigabitEthernet0/16
!
interface GigabitEthernet0/17
!
interface GigabitEthernet0/18
!
interface GigabitEthernet0/19
!
interface GigabitEthernet0/20
!
interface GigabitEthernet0/21
!
interface GigabitEthernet0/22
!
interface GigabitEthernet0/23
!
interface GigabitEthernet0/24
!
interface Vlan1
ip address 198.42.8.225 255.255.255.0
no ip route-cache
!
ip http server
!
control-plane
!
!

 

[unclerico]

either add spanning-tree portfast default in global config mode or under each access port add spanning-tree portfast

I hate all Uppercase... I don't want my groups to seem angry at me all the time! =)
- ColdFlame (vbscript forum)

 

[vipergg]

On all user ports use the interface range command and then use the "switchport host" command . Basically another way of doing what unclerico said except this also turns off etherchannel and trunk negotiation and brings the ports up even faster.

 

[VinceWhirlwind]

I never knew that.

 

[unclerico]

i'm with you vince, i never knew that either...all hail viper!!!! star for you.

I hate all Uppercase... I don't want my groups to seem angry at me all the time! =)
- ColdFlame (vbscript forum)

 

[VinceWhirlwind]

I suppose we should have checked to see if its true before starring him....?

 

[ISPKing]

It's true, It's in every switching book I have ever read.

 

[VinceWhirlwind]

I guess we belong to different libraries...

 

[ISPKing]

Lol, no cisco press in yours?

 

[vipergg]

For those of you lucky enough to support catos the same command is "set port host" .

 

[dapdacompx]

That worked thank you.

 

[VinceWhirlwind]

Right, ISPKing - I'm reading my Cisco press BCMSN books right now, and your command isn't in there.

 

[ISPKing]

Either you have old ass books, your lying, or you cant read, I am betting the latter.

Page 404.
Here is the excerpt.

************************************************************

TIP You might consider using the switchport host interface configuration command as a
quick way to force a port to support only a single PC. This command is actually a macro, as
shown in the following example:
Switch(config)#interface fastethernet 1/0/1
Switch(config-if)#switchport host
switchport mode will be set to access
spanning-tree portfast will be enabled
channel group will be disabled
Switch(config-if)#

CCNP

 

[VinceWhirlwind]

I asked the qualified CCNP trainer and he said "Wow, cool command - never heard of that one before".

 

[burtsbees]

Now now, ISP---BEHAVE! Or it's BACK to the DUNGEON eating mice and GRUEL!

/

tim@tim-laptop ~ $ sudo apt-get install windows
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Couldn't find package windows...Thank Goodness!

 

[ISPKing]

Well you need a new trainer Vince.
No burts don't.......

CCNP

 

[meneerB]

@dapdacompx: and don't forget the most important command, your previous colleague and these friendly tek-tip members forgot:

wr

)

 

[ISPKing]

^^that was a waste of a post, and resurrected a closed topic.
Refrain from stating the obvious.

CCNP

 

[burtsbees]

To the dungeon with you...

/

tim@tim-laptop ~ $ sudo apt-get install windows
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Couldn't find package windows...Thank Goodness!

 

[VinceWhirlwind]

Why's he so cranky this week?