Unable to ping destination sourcing 1 vlan while other vlan work fine

kkk1105 · ‎05-28-2019

Hello All,

Appreciate your input here. I'm unable to ping other MPLS location sourcing only a specific VLAN - in my case VLAN 601

IP int br show all vlan is UP.

Vlan2 x.x.x.x YES NVRAM up up
Vlan101 x.x.x.x YES NVRAM up up
Vlan601 x.x.x.x YES NVRAM up up
Vlan690 x.x.x.x YES NVRAM up up

Ping sourcing VLAN 601 failed

coreswitch#ping x.x.x.x source vlan 2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to x.x.x.x, timeout is 2 seconds:
Packet sent with a source address of x.x.x.x
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 120/122/130 ms
coreswitch#
coreswitch#
coreswitch#ping x.x.x.x source vlan 101
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to x.x.x.x, timeout is 2 seconds:
Packet sent with a source address of x.x.x.x
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 120/122/130 ms
coreswitch#
coreswitch#
coreswitch#ping x.x.x.x source vlan 601
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to x.x.x.x, timeout is 2 seconds:
Packet sent with a source address of x.x.x.x
.....
Success rate is 0 percent (0/5)
coreswitch#
coreswitch#
coreswitch#ping x.x.x.x source vlan 690
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to x.x.x.x, timeout is 2 seconds:
Packet sent with a source address of x.x.x.x
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 120/122/130 ms
coreswitch#

Traceroute to all VLAN return the same. Appreciate all helps here.

Thank you.

Jon Marshall · ‎05-28-2019

Are you advertising the vlan 601 subnet into the MPLS network ?

If so are there any acls in place that could be blocking those IPs ?

Jon

kkk1105 · ‎05-28-2019

@Jon Marshall wrote:

Are you advertising the vlan 601 subnet into the MPLS network ?

If so are there any acls in place that could be blocking those IPs ?

Jon

Hello Jon,

Yes checked with provider and it's advertised via BGP route. Don't see any acl denying this ip. I can't ping mpls router sourcing this vlan as well. Other vlan is fine. Pinging vlan 601(ownself) is fine too.