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need help with a cisco 4908g-l3 to cisco 3560

rick lancaster
Level 1
Level 1

i have a 4908G-L3 running IOS (tm) L3 Switch/Router Software (CAT2948G-IN-M), Version 12.0(7)W5(15d) with two vlans on side of my network and a CISCO 3560 running C3560 Software (C3560-IPBASE-M), Version 12.2(35)SE5 on the other side.

They are connected  by Bridgewave AR-60 Radios, i can ping form the 3560 side to teach radio and get <1ms to 2ms ping times. It is when i ping interface on the 4908g-l3 that i get pings in min <1 to max 170ms and avg of 60ms. Then when i ping from the 4908 to each radio get the same ping times.

my question is the settup that i did caused this or is the age of the 4908g. the config for the 4908 is:

Any help would be appreciated,

Port five was the old radio system that failed port 8 is the new system

Current configuration:
!
version 12.0
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname 4908G
!
enable secret
!
ip subnet-zero
bridge irb
!
!
!
interface Port-channel1
no ip address
no ip directed-broadcast
shutdown
bridge-group 2
hold-queue 300 in
!
interface Port-channel3
no ip address
no ip directed-broadcast
hold-queue 300 in
!
interface GigabitEthernet1
no ip address
no ip directed-broadcast
bridge-group 1
!
interface GigabitEthernet2
  no ip address
ip helper-address 172.25.200.3
no ip directed-broadcast
bridge-group 1
!
interface GigabitEthernet3
no ip address
no ip directed-broadcast
bridge-group 1
!
interface GigabitEthernet4
no ip address
no ip directed-broadcast
shutdown
bridge-group 1
!
interface GigabitEthernet5
no ip address
no ip directed-broadcast
!
interface GigabitEthernet5.1
encapsulation isl 1
no ip redirects
no ip directed-broadcast
bridge-group 1
!
interface GigabitEthernet5.2
encapsulation isl 2
no ip redirects
no ip directed-broadcast
bridge-group 2
!
interface GigabitEthernet6
no ip address
ip helper-address 172.25.200.3
no ip directed-broadcast
bridge-group 1
!
interface GigabitEthernet7
no ip address
no ip directed-broadcast
shutdown
bridge-group 1
!
interface GigabitEthernet8
no ip address
no ip directed-broadcast
!
interface GigabitEthernet8.1
encapsulation dot1Q 1
ip helper-address 172.25.200.3
no ip redirects
no ip directed-broadcast
bridge-group 1
!
interface GigabitEthernet8.2
encapsulation dot1Q 2 native
no ip redirects
no ip directed-broadcast
bridge-group 2
!
interface BVI1
ip address 172.25.200.1 255.255.252.0
no ip directed-broadcast
!
interface BVI2
ip address 172.25.250.2 255.255.252.0
no ip directed-broadcast
!
ip classless
no ip forward-protocol udp bootps
no ip forward-protocol udp bootpc
ip route 0.0.0.0 0.0.0.0 172.25.250.1
!
bridge 1 protocol ieee
bridge 1 route ip
bridge 2 protocol ieee
bridge 2 route ip
!
line con 0
transport input none
line aux 0
line vty 0 4
password
login

the config for the 3560 is

interface g0/1 is the one connected to the radios which connect to the 4908

interface g0/2 connects back to the network

interface f0/24 was the old wireless system

Current configuration : 2657 bytes
!
version 12.2
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname
!
enable secret
!
no aaa new-model
clock timezone UTC -6
clock summer-time UTC recurring
system mtu routing 1500
ip subnet-zero
no ip domain-lookup
!
no file verify auto
spanning-tree mode pvst
spanning-tree extend system-id
!
vlan internal allocation policy ascending
!
interface FastEthernet0/24
description **** Wireless ****
switchport access vlan 2
spanning-tree portfast
!
interface GigabitEthernet0/1
switchport trunk encapsulation dot1q
switchport trunk native vlan 2
switchport trunk allowed vlan 1,2
switchport mode trunk
!
interface GigabitEthernet0/2
description **** Uplink to MDF ****
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface Vlan1
ip address 172.25.100.3 255.255.252.0
ip helper-address 172.25.100.20
!
interface Vlan2
ip address 172.25.250.6 255.255.252.0
!
ip default-gateway 172.25.100.1
ip classless
ip route 0.0.0.0 0.0.0.0 172.25.100.1
ip http server

control-plane

line con 0
line vty 0 4
exec-timeout 0 0
no login
length 0
line vty 5 15
no login

1 Reply 1

Mathias Garcia
Level 1
Level 1

Ping replies from cisco devices are handled by the CPU, and has a low priority.

This can cause the type of delay and variation that you have gotten when pinging.

So it does not have to mean that the 4908g is performing badly when forwarding traffic, which is done in the hardware.

I would suggest trying pinging from the 4508 towards the radios and see what response you get.

Or if testing from the 3560 to try to ping a know reliable and fast server thats connected to the 4908.

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