Wired Intelligent Edge

last person joined: 9 hours ago 

Bring performance and reliability to your network with the HPE Aruba Networking Core, Aggregation, and Access layer switches. Discuss the latest features and functionality of your switching devices, and find ways to improve security across your network to bring together a mobile-first solution
Expand all | Collapse all

Aruba 3810m intervlan routing troubles

This thread has been viewed 6 times
  • 1.  Aruba 3810m intervlan routing troubles

    Posted Jul 24, 2019 09:57 AM

    Hello. here's some problem:

     

    I've got 2 vlans. 

    I can ping any host from 192.168.0.x to 192.168.10.x and it works. I can even RDP to those hosts or use http or whatever.

    DHCP works fine for both subnets (I have 2 pools on my DCHP for every sub).

    But I can't ping or anything contrariwise (from 192.168.10.x to 192.168.0.x). But it works for some hosts like DC/DNS and also some servers, but doesn't for any other hosts. Pings inside both nets do work fine.

     

    On host 192.168.1.164:

     

    tracert 192.168.10.4
    1 <1 мs <1 мs <1 мs 192.168.2.44
    2 1 ms <1 мs <1 мs 192.168.10.4

    success

     

    On host 192.168.10.4:

     

    tracert 192.168.1.164
    1 <1 мs <1 мs <1 мs 192.168.10.1
    2 * * * 

     

    Checked traffic with wireshark: icmp packets do not even reach the host 192.168.1.164 so icmp requests don't cross arubas vlan interface.

     

    BUT also on host 192.168.10.4:

     

    tracert 192.168.4.110
    1 <1 мs <1 мs <1 мs 192.168.2.44
    2 1 ms <1 мs <1 мs 192.168.4.110

     

    How can it be? I have no idea.

    I don't think that is firewall (tried to disable)

     

     

    ///////CONFIG of SWITCH////////////

     

    ip route 0.0.0.0 0.0.0.0 192.168.4.99
    ip routing
    
    vlan 1
    name "DEFAULT_VLAN"
    no untagged 6-7,11
    untagged 1-5,8-10,12-16,A1-A3,B1-B3
    tagged A4,B4
    ip address 192.168.2.44 255.255.248.0
    exit
    
    vlan 10
    name "Test VLAN"
    untagged 6-7,11
    tagged 2-3,5,13,A4
    ip address 192.168.10.1 255.255.255.0
    ip helper-address 192.168.4.110
    
    
                      IP Route Entries
    
      Destination        Gateway         VLAN Type      Sub-Type   Metric     Dist.
      ------------------ --------------- ---- --------- ---------- ---------- -----
      0.0.0.0/0          192.168.4.99    1    static               1          1
      127.0.0.0/8        reject               static               0          0
      127.0.0.1/32       lo0                  connected            1          0
      192.168.0.0/21     DEFAULT_VLAN    1    connected            1          0
      192.168.10.0/24    Test VLAN     10   connected            1          0

     

     



  • 2.  RE: Aruba 3810m intervlan routing troubles

    EMPLOYEE
    Posted Jul 25, 2019 04:16 AM

    Not completely sure but it looks like default gateway problem on some of the hosts? Do you assign same default gateway on every host? Can you ping from the switch for e.g. in the same subnet? Can you ping from the router with different source IP? 



  • 3.  RE: Aruba 3810m intervlan routing troubles
    Best Answer

    Posted Jul 25, 2019 05:21 AM

    That was too soon for creating this topic.

    It was actually firewall. 

    Routing was fine.

    I'm shamed.



  • 4.  RE: Aruba 3810m intervlan routing troubles

    EMPLOYEE
    Posted Jul 25, 2019 05:50 AM

    8-) never be shamed we just want to get thins working. Great to hear the problem has been fixed!!