3

I cannot figure out adding more than one IPv4 subnets on a VLAN using Allied Telesyn at9924 Switch

I've added the first IP using this command:

add ip int=vlan15 ip=xxx.243.117.193 mask=255.255.255.248

Now, I want to add another /29 subnets on the same VLAN (15). When I try the same command, I get this:

add ip int=vlan15 ip=xxx.79.99.17 mask=255.255.255.248

Error (3005263): Interface is already attached to IP module.

  • Alliedware seems to protect their core manual. What you're after is called a "secondary" ip address in Cisco terms. They might allow you to create subinterfaces ie... int vlan15.2 wish I could give you more but without documentation I can't. – SpacemanSpiff Oct 9 '13 at 5:13
2

Only a single ip can be assigned per interface, but I believe you can have up to 16 logical interfaces per interface (ie. vlan1, ppp0, etc).

Just append -# to the interface name, like so:

Manager switch1> show ip int

Interface     Type     IP Address       Bc Fr PArp  Filt RIP Met.   SAMode  IPSc
Pri. Filt     Pol.Filt Network Mask     MTU   VJC   GRE  OSPF Met.  DBcast  Mul.
GArp   NotifyOSPFDown
--------------------------------------------------------------------------------
LOCAL         ---      Not set          -  -  -     ---  --         Pass    --
---           ---      Not set          1500  -     ---  --         ---     ---
On
vlan1         Remote   10.1.1.113       1  n  Off   ---  01         Pass    No
---           ---      255.255.255.0    1500  -     ---  0000000001 No      Rec
On     Yes
--------------------------------------------------------------------------------

Manager switch1> add ip int=vlan1-1 ip=192.168.55.1 mask=255.255.255.0

Info (1005275): interface successfully added.

Manager switch1> show ip int

Interface     Type     IP Address       Bc Fr PArp  Filt RIP Met.   SAMode  IPSc
Pri. Filt     Pol.Filt Network Mask     MTU   VJC   GRE  OSPF Met.  DBcast  Mul.
GArp   NotifyOSPFDown
--------------------------------------------------------------------------------
LOCAL         ---      Not set          -  -  -     ---  --         Pass    --
---           ---      Not set          1500  -     ---  --         ---     ---
On
vlan1-0       Remote   10.1.1.113       1  n  Off   ---  01         Pass    No
---           ---      255.255.255.0    1500  -     ---  0000000001 No      Rec
On     Yes
vlan1-1       Static   192.168.55.1     1  n  Off   ---  01         Pass    No
---           ---      255.255.255.0    1500  -     ---  0000000001 No      Rec
On     Yes
--------------------------------------------------------------------------------

The vlan1 interface is automatically changed to vlan1-0 to indicate there are logical interfaces.

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0

You don't need to make a switch aware of all the subnets on the VLAN.

It will switch traffic perfectly fine without this knowledge.

| improve this answer | |
  • Yes, but it won't route it. – SpacemanSpiff Oct 9 '13 at 5:11

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