I am trying to configure two subinterfaces on gigabitethernet0/1 on a Cisco 1910 router which is connected to an HP Procurve 2810 switch. However, once I configure the two sub interfaces, no traffic will pass from either "sub" network to the router. The two subinterfaces are gigabitethernet0/1.1 (ip address 172.16.96.2 255.255.240.0) and gigabitethernet0/1.2 (ip address 192.168.20.2 255.255.255.0). When I connect a host to the switch with the ip address of 172.16.96.3, I can not even ping 172.16.96.2. However, if I remove the two sub interfaces and configure gigabitethernet0/1 with an ip address 172.16.96.2 255.255.240.0, everything works great.
Here is a copy of the running-config on the Cisco 1921:
Current configuration : 2010 bytes
!
! Last configuration change at 19:07:06 pacific Fri Mar 9 1900
!
version 15.5
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname XXXXXXXXXX
!
boot-start-marker
boot-end-marker
!
!
enable secret 5 XXXXXXXXXXXXXXXXXXXXX
enable password 7 XXXXXXXXXXXXXXXXXXXX
!
no aaa new-model
ethernet lmi ce
no process cpu extended history
no process cpu autoprofile hog
clock timezone pacific -8 0
clock summer-time PDT recurring
!
!
!
!
!
!
no ip source-route
!
!
!
!
!
!
no ip domain lookup
ip cef
no ipv6 cef
multilink bundle-name authenticated
!
!
!
license udi pid CISCO1921/K9 sn FTX154681DF
!
!
!
redundancy
!
!
!
!
!
!
interface Embedded-Service-Engine0/0
no ip address
shutdown
!
interface GigabitEthernet0/0
ip address 192.168.1.254 255.255.255.0
duplex auto
speed auto
!
interface GigabitEthernet0/1
no ip address
ip helper-address 172.16.96.5
duplex auto
speed auto
!
interface GigabitEthernet0/1.1
encapsulation dot1Q 30
ip address 172.16.96.2 255.255.240.0
!
interface GigabitEthernet0/1.2
encapsulation dot1Q 20
ip address 192.168.20.2 255.255.255.0
!
interface Serial0/0/0
ip address 192.168.100.2 255.255.255.252
!
ip forward-protocol nd
!
no ip http server
no ip http secure-server
!
ip route 0.0.0.0 0.0.0.0 192.168.1.1
ip route 172.16.64.0 255.255.240.0 192.168.1.1
!
no service-routing capabilities-manager
!
!
snmp-server community WFFRead RO
snmp-server community DSIRead RO
snmp-server enable traps tty
access-list 100 permit ip any any
access-list 144 permit icmp host 172.16.96.3 host 172.16.96.2
access-list 144 permit icmp host 172.16.96.2 host 172.16.96.3
!
control-plane
!
!
!
line con 0
exec-timeout 0 0
line aux 0
line 2
no activation-character
no exec
transport preferred none
transport input all
transport output pad telnet rlogin lapb-ta mop udptn v120 ssh
stopbits 1
line vty 0 4
password 7 XXXXXXXXXXXXXXXXXXX
login
transport input all
!
scheduler allocate 20000 1000
ntp server 192.5.41.40
!
end
Here is the configuration of the HP Procurve switch:
; J9021A Configuration Editor; Created on release #N.11.75
hostname "Sterling SW1 ProCurve2810"
time timezone -480
no web-management
no telnet-server
ip default-gateway 172.16.96.2
sntp server 192.43.244.18
timesync sntp
sntp unicast
snmp-server community "public" Unrestricted
vlan 1
name "DEFAULT_VLAN"
untagged 1-24
ip address 172.16.16.70 255.255.240.0
exit
vlan 20
name "192.168.20"
ip address 192.168.20.55 255.255.255.0
tagged 1-24
exit
vlan 30
name "172.16.96"
ip address 172.16.96.55 255.255.240.0
tagged 1-24
exit
ip ssh
password manager
Thanks in advance for any help you can provide.
