Hi everybody,
I was under the impression when we use VGT mode ( vlan 4095) on a standard switch, attached VMS on the standard switch, is supposed to send/receive tagged traffic. But I see it is not necessarily true:
TEST SET UP;
CSR1-gig3-200.200.200.10/24-------PORT-GROUP: LAN , VLAN 4095
CRS4-gig2-200.200.200..4/24----------- |
Above we have two VMS ( Cisco CSR routers) which are configured to send/receive untagged traffic, CSR1 has gig 3 and CSR4 has gig3 in port group LAN, which has vlan id 4095.
CSR1#show running-config interface gigabitEthernet 3
Current configuration : 93 bytes
interface GigabitEthernet3
ip address 200.200.200.10 255.255.255.0
SR4#show running-config interface gigabitEthernet 2
interface GigabitEthernet2
ip address 200.200.200.4 255.255.255.0
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CSR4 can ping CSR1:
CSR4#ping 200.200.200.10
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 200.200.200.10, timeout is 2 seconds:
!!!!!
Packet capture on gig 2 on CSR4 shows untagged traffic being sent out:
###############################################################
Is it a bug or expected behavior for VGT mode?
Thanks and have a good weekend!!