12-12-2017 06:39 AM - edited 03-03-2019 08:41 AM
Hello everybody. This is my first post thank you everyone who will reply and help in advance.
I have 2 4331 series router as primary and secondary routers. These router will do bgp connections and will be the border routers. Here is a brief summary of what I have right now:
vrf definition MSG_OPS
rd 102:102
route-target export 102:102
route-target import 102:102
!
address-family ipv4
exit-address-family
!
address-family ipv6
exit-address-family
!
vrf definition MSG_TEST
rd 152:152
route-target export 152:152
route-target import 152:152
!
address-family ipv4
exit-address-family
!
address-family ipv6
exit-address-family
!
interface GigabitEthernet0/0/0
description to_BACKUP_ROUTER
ip address 10.26.1.1 255.255.255.252
no ip proxy-arp
negotiation auto
interface GigabitEthernet0/0/1
description to_LAN
no ip address
negotiation auto
!
interface GigabitEthernet0/0/1.102
description MSG_OPS
encapsulation dot1Q 102
vrf forwarding MSG_OPS
ip address 57.235.205.177 255.255.255.240
standby version 2
standby 102 ip 57.235.205.178
standby 102 priority 255
standby 102 preempt delay minimum 20
standby 102 authentication md5 key-string 7
service-policy input input_match
!
interface GigabitEthernet0/0/1.152
description MSG_TEST
encapsulation dot1Q 152
vrf forwarding PENS_MSG_TEST
ip address 57.235.205.201 255.255.255.248
standby version 2
standby 152 ip 57.235.205.202
standby 152 priority 255
standby 152 preempt delay minimum 20
standby 152 authentication md5 key-string 7
service-policy input input_match
interface GigabitEthernet0/1/0
switchport access vlan 102
!
interface GigabitEthernet0/1/1
switchport access vlan 152
interface Vlan102
description MSG_OPS
vrf forwarding MSG_OPS
ip address 57.235.239.210 255.255.255.252
!
interface Vlan152
description MSG_TEST
vrf forwarding MSG_TEST
ip address 57.235.239.222 255.255.255.252
0/0/0 and 0/0/1 are the Layer 3 ports and 0/1/0 and 0/1/1 are Layer 2 NIM ES2-8 ports which goes to abroad as BGP protocol. Also there are some BGP configuration which I didn't share here. So my problem is this When I connect a PC to my LAN port Gig0/0/1 and give the PC IP as 57.235.205.189 or something from the range neither PC nor Router can't ping each one. When I look at the result of ARP, MAC of Computer seems as "incomplete". What am I missing here? Also from router itself it doesn't even ping the IP of subinterfaces such as 57.235.205.201. May be I am really missing something very basic but I couldn't see the solution. Any help at this point is appreciated. Thank you very much.
12-13-2017 12:00 AM
Hi there,
When you connect the PC to Gi0/0/1, have you configured its interface to receive dot1q tagged frames and accept the correct VLAN IDs (102, 152). If not, the tagged frames from the router will be dropped.
Regarding the router being able to ping its own sub-interfaces, the ping command with no parameters will source packets from the default VRF. Both of your sub-interfaces are in separate VRFs. So with the router physically isolated they will be unreachable.
Try:
ping vrf MGS-OPS 57.235.205.177
cheers,
Seb.
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