We have a Cisco router (887VA) supplied by a 3rd party. The supplier says its switch ports are simply untagged/access-mode. However our HP switch, which is connected to the Cisco router's switch through a port on the HP switch (j9772a), which untagged/access-mode refuses to work correctly.
We have verified that a laptop which directly connects to either the Cisco or the HP works as intended.
The strangest part is that if we use VLAN 1, untagged, on the HP-switch, the setup does work as intended. How can using a different VLAN, specifically VLAN 1, matter for the connection if its untagged? Is there magic between the two devices I should know about?
hostname "SW02-E2" trunk 45-46 trk10 lacp stack join e0071b-0000 interface 44 name "000 WAN" exit snmp-server community "public" unrestricted vlan 1 name "DEFAULT_VLAN" no untagged 1-24,37-44,49-52,Trk10 untagged 25-36 tagged 47-48 no ip address exit vlan 2 name "Default vlan2" untagged 37-42,49-52,Trk10 no ip address exit vlan 10 name "Office network" untagged 1-24 tagged 47-48,Trk10 ip address 192.168.178.2 255.255.255.0 exit vlan 213 name "VPN network" untagged 43-44 tagged 7-8,10 ip address 192.168.213.66 255.255.255.192 exit vlan 1000 name "stacking" no ip address exit spanning-tree spanning-tree Trk10 priority 4 spanning-tree mode rapid-pvst device-profile name "default-ap-profile" cos 0 exit password manager password operator