[c-nsp] FW: Overruns

[Mohammad Khalil]

hi all 

i posted this issue earlier but didnt get a solution 
anyway the MTU settings from both side are the same 1500 bytes
i dont think that the MTU modification from Cisco side as its related to the number of packets sent from the ASN side and received by the Cisco side
i was viewing the buffers on the Cisco side and found below
Public buffer pools:

Huge buffers, 18024 bytes (total 2, permanent 2, peak 11 @ 5w5d):
     2 in free list (0 min, 4 max allowed)
     10062 hits, 182 misses, 364 trims, 364 created
     0 failures (0 no memory)

do the misses number indicate anything ??
does the buffer tuning will solve the issue ?
even the IOS upgrade didn't solve the issue

Thanks

From: eng_mssk at hotmail.com
To: cisco-nsp at puck.nether.net
Subject: Overruns
Date: Tue, 6 Apr 2010 11:44:46 +0300








hi all 

i have 2 cisco 7606 routers connected to ASN GW for wimax traffic
we had a problem with overruns on the port channels 
we connected 5 cables from the ASN to both routers and configured port channels for VLAN and the same setup for another vlan
one vlan is for communcations with RASs and one to transport the traffic for into the core cloud
anyway we upgraded the IOS version on the routers thinking thats might solve the issue but still 
please find below

CR1.KJ-Building#sh int po10 | inc over
     1 input errors, 1 CRC, 0 frame, 72395 overrun, 0 ignored
CR1.KJ-Building#sh int po20 | inc over
     6 input errors, 2 CRC, 0 frame, 734930 overrun, 0 ignored

CR1.KJ-Building#sh run int po10
Building configuration...

Current configuration : 259 bytes
!
interface Port-channel10
 description CORE_VLAN to ASN Gateway
 switchport
 switchport access vlan 10
 switchport trunk encapsulation dot1q
 switchport mode access
 load-interval 30
 speed 1000
 duplex full
 flowcontrol receive on
 flowcontrol send on
end

CR1.KJ-Building#sh run int po20
Building configuration...

Current configuration : 258 bytes
!
interface Port-channel20
 description RAS-VLAN to ASN Gateway
 switchport
 switchport access vlan 20
 switchport trunk encapsulation dot1q
 switchport mode access
 load-interval 30
 speed 1000
 duplex full
 flowcontrol receive on
 flowcontrol send on
end

CR2.KJ-Building#sh int po10 | inc over
     0 input errors, 0 CRC, 0 frame, 17889 overrun, 0 ignored
CR2.KJ-Building#sh int po20 | inc over
     0 input errors, 0 CRC, 0 frame, 826604 overrun, 0 ignored

CR2.KJ-Building#sh run int po10 
Building configuration...

Current configuration : 259 bytes
!
interface Port-channel10
 description CORE_VLAN to ASN Gateway
 switchport
 switchport access vlan 10
 switchport trunk encapsulation dot1q
 switchport mode access
 load-interval 30
 speed 1000
 duplex full
 flowcontrol receive on
 flowcontrol send on
end

CR2.KJ-Building#sh run int po20 
Building configuration...

Current configuration : 258 bytes
!
interface Port-channel20
 description RAS-VLAN to ASN Gateway
 switchport
 switchport access vlan 20
 switchport trunk encapsulation dot1q
 switchport mode access
 load-interval 30
 speed 1000
 duplex full
 flowcontrol receive on
 flowcontrol send on
end

any advice in regards 
thanks 
 		 	   		  
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