Re: peculier high input errors on Cisco 4507 on etherchannel

i would say check your cables, but you stated that the access switch is
receiving errors from the 6509 as well correct?

is it the same line card? could be bad and spitting out errors...

unplug and isolated on of the line cards if using two and see if they go
away...

--
Garry L. Baker
"There is no 'patch' for stupidity." - www.sqlsecurity.com
On Sat, Oct 2, 2010 at 4:49 AM, <subodh.rawat_at_wipro.com> wrote:
> Hi All,
>
> We are having some peculiar problem.
>
> We have two switches (Cisco 6509 as L3 and Cisco 4507 as L2) and L2
> ether-channel is formed between two switches with direct Cat6 cables
> (without
> any patch panel ports).
>
> When I see show interface output, I dont see any errors on 6509 switch port
> while high input errors are observed on 4507 switch ports.
>
> Below is show interface output and can see high input errors on 4507 and no
> errors on 6509-
>
> BRA-4507R-Access-3#sh int po 8 | in error
>     741322 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
>     0 output errors, 0 collisions, 0 interface resets
>
>
> BRA-6509-Core-1#sh int po 32 | in error
>     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
>     0 output errors, 0 collisions, 0 interface resets
>
> ------------------------------------
>
> My configuration on both the switches is as below -
> A) Core Switch (6509) -
>
> interface Port-channel32
>  description ** Etherchannel#32, Gi3/2+Gi3/10+Gi7/2+Gi7/10 to BRA-Access-3,
> Etherchannel#8, Gi6/1+Gi6/2+Gi7/1+Gi7/2 **
>  switchport
>  switchport trunk encapsulation dot1q
>  switchport trunk allowed vlan 12,13,16-19,25,26,30
>  switchport mode trunk
>  no ip address
> end
> !
> interface GigabitEthernet3/2
>  description ** Etherchannel#32, to BRA-Access-3, Etherchannel#8 **
>  switchport
>  switchport trunk allowed vlan 12,13,16-19,25,26,30
>  switchport mode trunk
>  no ip address
>  channel-group 32 mode on
> end
> BRA-6509-Core-1#sh run int g3/10
> Building configuration...
> Current configuration : 233 bytes
> !
> interface GigabitEthernet3/10
>  description ** Etherchannel#32, to BRA-Access-3, Etherchannel#8 **
>  switchport
>  switchport trunk allowed vlan 12,13,16-19,25,26,30
>  switchport mode trunk
>  no ip address
>  channel-group 32 mode on
> end
> BRA-6509-Core-1#sh run int g7/2
> Building configuration...
> Current configuration : 232 bytes
> !
> interface GigabitEthernet7/2
>  description ** Etherchannel#32, to BRA-Access-3, Etherchannel#8 **
>  switchport
>  switchport trunk allowed vlan 12,13,16-19,25,26,30
>  switchport mode trunk
>  no ip address
>  channel-group 32 mode on
> end
> BRA-6509-Core-1#sh run int g7/10
> Building configuration...
> Current configuration : 233 bytes
> !
> interface GigabitEthernet7/10
>  description ** Etherchannel#32, to BRA-Access-3, Etherchannel#8 **
>  switchport
>  switchport trunk allowed vlan 12,13,16-19,25,26,30
>  switchport mode trunk
>  no ip address
>  channel-group 32 mode on
> end
>
> B) Accesss Switch (4507) -
>
> BRA-4507R-Access-3#sh run int po8
> Building configuration...
> Current configuration : 273 bytes
> !
> interface Port-channel8
>  description ** Etherchannel#8, Gi6/1+Gi6/2+Gi7/1+Gi7/2 to BRA-Core-1,
> Etherchan
> nel#32, Gi3/2+Gi3/10+Gi7/2+Gi7/10 **
>  switchport
>  switchport trunk encapsulation dot1q
>  switchport trunk allowed vlan 12,13,16-19,25,26,30
>  switchport mode trunk
> end
> BRA-4507R-Access-3#sh run int g6/1
> Building configuration...
> Current configuration : 240 bytes
> !
> interface GigabitEthernet6/1
>  description ** Etherchannel#8, to BRA-Core-1, Etherchannel#32 **
>  switchport trunk encapsulation dot1q
>  switchport trunk allowed vlan 12,13,16-19,25,26,30
>  switchport mode trunk
>  channel-group 8 mode on
> end
> BRA-4507R-Access-3#sh run int g6/2
> Building configuration...
> Current configuration : 240 bytes
> !
> interface GigabitEthernet6/2
>  description ** Etherchannel#8, to BRA-Core-1, Etherchannel#32 **
>  switchport trunk encapsulation dot1q
>  switchport trunk allowed vlan 12,13,16-19,25,26,30
>  switchport mode trunk
>  channel-group 8 mode on
> end
> BRA-4507R-Access-3#sh run int g7/1
> Building configuration...
> Current configuration : 240 bytes
> !
> interface GigabitEthernet7/1
>  description ** Etherchannel#8, to BRA-Core-1, Etherchannel#32 **
>  switchport trunk encapsulation dot1q
>  switchport trunk allowed vlan 12,13,16-19,25,26,30
>  switchport mode trunk
>  channel-group 8 mode on
> end
> BRA-4507R-Access-3#sh run int g7/2
> Building configuration...
> Current configuration : 240 bytes
> !
> interface GigabitEthernet7/2
>  description ** Etherchannel#8, to BRA-Core-1, Etherchannel#32 **
>  switchport trunk encapsulation dot1q
>  switchport trunk allowed vlan 12,13,16-19,25,26,30
>  switchport mode trunk
>  channel-group 8 mode on
> end
>
> -------------------------
>
> Total 4 Cat 6 cables are directly connected between these two switches and
> all
> ports are up with 1000/Full duplex.
>
> The same problem is coming on other etherchannels as well between Core
> switch
> and Access switch. However there is no errors between directly connected
> Access Switches (4507) ether channel.
>
> Please help me in understanding this issue.
>
> Regards,
> Subodh Rawat |
>
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