4108GL IP Routing slow

[Swthpk32]

Hello,

we use a Procurve 4108GL as backbone switch. Our LAN is seperated into four subnets which should be routed by the Procurve. Our problem is that routing between the subnets is extremly slow, we got ping resonses between 5 and 100ms, sometime even ping drops. CPU Utilization is about 20%.

Following the configuration of the ProCurve...
Regards,

Steve

es-mdf-cs01# show run

Running configuration:

; J4865A Configuration Editor; Created on release #G.07.109

hostname "es-mdf-cs01" cdp run module 1 type J4893A module 2 type J4862B module 3 type J4893A module 4 type J4862B module 8 type J4863A module 5 type J4862B interface A1    no lacp exit interface A2    no lacp exit interface A3    disable    no lacp exit interface A4    no lacp exit interface A5    no lacp exit interface A6    disable    no lacp exit interface B1    no lacp exit interface B2    no lacp exit interface B3    no lacp exit interface B4    no lacp exit interface B5    no lacp exit interface B6    no lacp exit interface B7    no lacp exit interface B8    no lacp exit interface B9    no lacp exit interface B10    no lacp exit interface B11    no lacp exit interface B12    no lacp exit interface B13    no lacp exit interface B14    no lacp exit interface B15    no lacp exit interface B16    no lacp exit interface B17    no lacp exit interface B18    no lacp exit interface B19    no lacp exit interface B20    no lacp exit interface B21    no lacp exit interface B22    no lacp exit interface B23    no lacp exit interface B24    no lacp exit interface C1    no lacp exit interface C2    no lacp exit interface C3    no lacp exit interface C4    disable    no lacp exit interface C5    no lacp exit interface C6    no lacp exit interface D1    no lacp exit interface D2    no lacp exit interface D3    no lacp exit interface D4    no lacp exit interface D5    no lacp exit interface D6    no lacp exit interface D7    no lacp exit interface D8    no lacp exit interface D9    no lacp exit interface D10    no lacp exit interface D11    no lacp exit interface D12    no lacp exit interface D13    no lacp exit interface D14    no lacp exit interface D15    no lacp exit interface D16    no lacp exit interface D17    no lacp exit interface D18    no lacp exit interface D19    no lacp exit interface D20    no lacp exit interface D21    no lacp exit interface D22    no lacp exit interface D23    no lacp exit interface D24    no lacp exit interface H1    no lacp exit interface H2    no lacp exit interface H3    no lacp exit interface H4    no lacp exit interface H5    no lacp exit interface H6    no lacp exit interface E1    no lacp exit interface E2    no lacp exit interface E3    no lacp exit interface E4    no lacp exit interface E5    no lacp exit interface E6    no lacp exit interface E7    no lacp exit interface E8    no lacp exit interface E9    no lacp exit interface E10    no lacp exit interface E11    no lacp exit interface E12    no lacp exit interface E13    no lacp exit interface E14    no lacp exit interface E15    no lacp exit interface E16    no lacp exit interface E17    no lacp exit interface E18    no lacp exit interface E19    no lacp exit interface E20    no lacp exit interface E21    no lacp exit interface E22    no lacp exit interface E23    no lacp exit interface E24    no lacp exit ip default-gateway 172.16.1.1 sntp server 64.16.211.38 sntp server 172.16.1.8 sntp server 172.16.1.4 ip routing logging facility syslog logging 172.16.1.4 snmp-server community "public" Unrestricted vlan 1    name "DEFAULT_VLAN"    forbid A1,C3-C4    untagged A2,A4-A6,B1-B24,C1-C2,C5-C6,D1-D24,E2-E24,H1-H5    ip address 172.16.1.1 255.255.248.0    no untagged A1,A3,C3-C4,E1,H6    ip igmp    exit vlan 2    name "ITClub"    forbid A1    untagged C4,E1    no ip address    ip helper-address 172.16.1.8    tagged C3,H4    ip igmp    exit vlan 100    name "WAN_Routing"    untagged A1,A3,C3    ip address 172.31.255.1 255.255.255.0    ip igmp    exit vlan 99    name "CIPA_Filter"    forbid C4    untagged H6    ip address 192.168.255.254 255.255.255.0    tagged E1    ip igmp    exit vlan 10    name "Wireless"    forbid A1,C3-C4    ip address 172.16.8.1 255.255.248.0    ip helper-address 172.16.1.8    tagged A5,H4    ip igmp    exit fault-finder bad-driver sensitivity high fault-finder bad-transceiver sensitivity high fault-finder bad-cable sensitivity high fault-finder too-long-cable sensitivity high fault-finder over-bandwidth sensitivity high fault-finder broadcast-storm sensitivity high fault-finder loss-of-link sensitivity high ip route 172.18.0.0 255.255.0.0 172.31.255.2 ip route 172.17.0.0 255.255.0.0 172.31.255.3 ip route 0.0.0.0 0.0.0.0 192.168.255.1 ip route 172.19.0.0 255.255.0.0 172.31.255.3 ip route 172.15.0.0 255.255.0.0 172.31.255.3 no stack auto-join spanning-tree priority 1 password manager