[c-nsp] 3750 not routing L3 ports...?

ChrisSerafin chris at chrisserafin.com
Fri May 22 12:40:50 EDT 2009


I have a 3750 switch configured with 2 L3 ports but I cannot ping from 
one interface to the other. I normally just do IP addresses on VLAN and 
perform intra-vlan routing but I would assume this would work the 
same....any ideas..?

xxx-02#ping 10.63.7.6 source 10.63.7.2

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.63.7.6, timeout is 2 seconds:
Packet sent with a source address of 10.63.7.2
.....
Success rate is 0 percent (0/5)
xxx-02#ping 10.63.7.6 source 10.63.7.5

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.63.7.6, timeout is 2 seconds:
Packet sent with a source address of 10.63.7.5
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/8 ms
xxx-02#sh ip int brie
Interface              IP-Address      OK? Method Status                
Protocol
GigabitEthernet1/0/1   10.63.7.2       YES NVRAM  up                    up
GigabitEthernet1/0/2   10.63.7.5       YES NVRAM  up                    up
!



Here is the config:


interface GigabitEthernet1/0/1
 no switchport
 ip address 10.63.7.2 255.255.255.252
 srr-queue bandwidth share 10 10 60 20
 srr-queue bandwidth shape  10  0  0  0
 queue-set 2
 priority-queue out
 mls qos trust cos
 auto qos voip trust
 spanning-tree portfast
!
interface GigabitEthernet1/0/2
 no switchport
 ip address 10.63.7.5 255.255.255.252
 srr-queue bandwidth share 10 10 60 20
 srr-queue bandwidth shape  10  0  0  0
 queue-set 2
 priority-queue out
 mls qos trust device cisco-phone
 mls qos trust cos
 auto qos voip cisco-phone
 spanning-tree portfast
 service-policy input xxxxxPolice-CiscoPhone
!
!
ip routing
ip default-gateway 10.63.7.1
ip classless
ip route 0.0.0.0 0.0.0.0 10.63.7.6
ip route 10.0.0.0 255.0.0.0 10.63.7.1
ip route 10.63.4.192 255.255.255.192 10.63.7.6
ip route 10.63.30.0 255.255.255.0 10.63.7.1
ip route 10.254.254.0 255.255.255.0 10.63.7.6


-chris






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