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  1. rubikz

    3Com 4800G and optical fiber

    Are the two IP addresses both in the same subnet, in VLAN1? yes Are both switches configured for VLAN1 as the management VLAN? yes [4800G-GigabitEthernet1/0/1]display this # interface GigabitEthernet1/0/1 port link-type trunk port trunk permit vlan 1 to 6 broadcast-suppression pps 3000 undo...
  2. rubikz

    3Com 4800G and optical fiber

    Hi, On both switches : - the trunk port is configured to transmit untagged frames on Vlan1 and tagged frames on Vlan2. - the IP address and the netmask (/24) are assigned to the interface. - the link light is become green. - from interface management, the link is detected (Dark gray : SX...
  3. rubikz

    Configure a 3Com switch 4800G

    Two problems solved : 1) Port on 3Com switch 4800G was configured for full-duplex while trunk port on 3Com switch 4228G was defaulted to half-duplex. 2) Side 3Com switch 4800G, I had to configure the trunk port as active link (undo shutdown command)
  4. rubikz

    Configure a 3Com switch 4800G

    --> Considering un access port packet processing (in reference to 3com Swicth 5500 Family configuration Guide): 1) By default, all Ethernet ports belong to Vlan 1, the port 17 (side 4800G) receive/match an untagged packet from 3Com switch 4228G (because the selected port is configured to...
  5. rubikz

    Configure a 3Com switch 4800G

    OK. Side 4228G, It seems that I can't configure a trunk port.
  6. rubikz

    Configure a 3Com switch 4800G

    Thx so much. To resume : 1) I select the mode system view system-view 2) I select Ethernet port view interface Ethernet1/0/1 3) I change a port’s link type from access to trunk because the link type of a port is access by default. 4) I assign the current port to VLANs 1 to 2 port...
  7. rubikz

    Configure a 3Com switch 4800G

    Hi, I'm getting some difficulty to configure a 3Com switch 4800G. This one is plugged in on 3Com switch 4228G with a category 5e patch cable. The link light must become green for both ports except it is not the case. The devices support autonegotiation and 10BASE-T/100BASE-TX...

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