How to verify Jumbo frame support for AP and controller

MVP
MVP
Requirement:

After enabling jumbo frames if we want to verify the MTU for controller and AP.



Solution:

We can check below command.

 

show datapath port 

 

 

Datapath Port Table Entries

---------------------------

 

Flags: Q - trunk,  T - trusted, B - blocked,  L - LAG

       M - tunneled node, X - xSec, J - Jumbo enabled

 

Port      PVID  Ingress ACL  Egress ACL  Session ACL   MTU       Flags

--------  ----  -----------  ----------  -----------   ------    ------

0/0/0     1000  0            0           0            9000      TJ

0/0/1     1     0            0           0            9000      QTJ

0/0/2     1     0            0           0            1500      B

0/0/3     1     0            0           0            1500      B

0/0/4     1     0            0           0            1500      B

0/0/5     1     0            0           0            1500      B

 

 

However, the bss-table  output shows the tunnel MTU.

 

show ap bss-table ap-name "AP-039-Test-RI-1"

 

 

fm (forward mode): T-Tunnel, S-Split, D-Decrypt Tunnel, B-Bridge (s-standard, p-persistent, b-backup, a-always), n-anyspot

 

Aruba AP BSS Table

------------------

bss                ess  port  ip            phy    type  ch/EIRP/max-EIRP  cur-cl  ap name           in-t(s)  tot-t  mtu   acl-state  acl  fm

---                ---  ----  --            ---    ----  ----------------  ------  -------           -------  -----  ---   ---------  ---  --

18:64:72:29:60:d0       N/A   129.10.1.250  a-VHT  am    ?/?/?             0       AP-039-Test-RI-1  0        40s    1500  -          2    Bs

18:64:72:29:60:c0       N/A   129.10.1.250  g-HT   am    ?/?/?             0       AP-039-Test-RI-1  0        40s    1500  -          2    Bs

 

 

 

For AP, we can see the MTU for eth0 and Eth1 in below output taken from AP- techsupport.

 

ifconfig output for eth0

------------------------

eth0      Link encap:Ethernet  HWaddr 18:64:72:CA:96:0C 

---------------------------------------------------------

          UP BROADCAST RUNNING SLAVE MULTICAST  MTU:9000  Metric:1

          RX packets:378 errors:0 dropped:0 overruns:0 frame:0

          TX packets:173 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000

          RX bytes:51711 (50.4 KiB)  TX bytes:108517 (105.9 KiB)

          Base address:0x6000

 

          Rx broadcast packet:0         Rx broadcast packet per second:0

          Rx multicast packet:0         Rx multicast packet per second:0

          Tx broadcast packet:0         Tx broadcast packet per second:0

          Tx multicast packet:0         Tx multicast packet per second:0

 

ifconfig output for eth1

------------------------

eth1      Link encap:Ethernet  HWaddr 18:64:72:CA:96:0C 

---------------------------------------------------------

          UP BROADCAST SLAVE MULTICAST  MTU:9000  Metric:1

          RX packets:0 errors:0 dropped:0 overruns:0 frame:0

          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000

          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

          Base address:0xe000

 

          Rx broadcast packet:0         Rx broadcast packet per second:0

          Rx multicast packet:0         Rx multicast packet per second:0

          Tx broadcast packet:0         Tx broadcast packet per second:0

          Tx multicast packet:0         Tx multicast packet per second:0



Configuration:

show datapath port 

 

 

Datapath Port Table Entries

---------------------------

 

Flags: Q - trunk,  T - trusted, B - blocked,  L - LAG

       M - tunneled node, X - xSec, J - Jumbo enabled

 

Port      PVID  Ingress ACL  Egress ACL  Session ACL   MTU       Flags

--------  ----  -----------  ----------  -----------   ------    ------

0/0/0     1000  0            0           0            9000      TJ

0/0/1     1     0            0           0            9000      QTJ

0/0/2     1     0            0           0            1500      B

0/0/3     1     0            0           0            1500      B

0/0/4     1     0            0           0            1500      B

0/0/5     1     0            0           0            1500      B

 

 

However, the bss-table  output shows the tunnel MTU.

 

show ap bss-table ap-name "AP-039-Test-RI-1"

 

 

fm (forward mode): T-Tunnel, S-Split, D-Decrypt Tunnel, B-Bridge (s-standard, p-persistent, b-backup, a-always), n-anyspot

 

Aruba AP BSS Table

------------------

bss                ess  port  ip            phy    type  ch/EIRP/max-EIRP  cur-cl  ap name           in-t(s)  tot-t  mtu   acl-state  acl  fm

---                ---  ----  --            ---    ----  ----------------  ------  -------           -------  -----  ---   ---------  ---  --

18:64:72:29:60:d0       N/A   129.10.1.250  a-VHT  am    ?/?/?             0       AP-039-Test-RI-1  0        40s    1500  -          2    Bs

18:64:72:29:60:c0       N/A   129.10.1.250  g-HT   am    ?/?/?             0       AP-039-Test-RI-1  0        40s    1500  -          2    Bs

 

 

 

For AP, we can see the MTU for eth0 and Eth1 in below output taken from AP- techsupport.

 

ifconfig output for eth0

------------------------

eth0      Link encap:Ethernet  HWaddr 18:64:72:CA:96:0C 

---------------------------------------------------------

          UP BROADCAST RUNNING SLAVE MULTICAST  MTU:9000  Metric:1

          RX packets:378 errors:0 dropped:0 overruns:0 frame:0

          TX packets:173 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000

          RX bytes:51711 (50.4 KiB)  TX bytes:108517 (105.9 KiB)

          Base address:0x6000

 

          Rx broadcast packet:0         Rx broadcast packet per second:0

          Rx multicast packet:0         Rx multicast packet per second:0

          Tx broadcast packet:0         Tx broadcast packet per second:0

          Tx multicast packet:0         Tx multicast packet per second:0

 

ifconfig output for eth1

------------------------

eth1      Link encap:Ethernet  HWaddr 18:64:72:CA:96:0C 

---------------------------------------------------------

          UP BROADCAST SLAVE MULTICAST  MTU:9000  Metric:1

          RX packets:0 errors:0 dropped:0 overruns:0 frame:0

          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000

          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

          Base address:0xe000

 

          Rx broadcast packet:0         Rx broadcast packet per second:0

          Rx multicast packet:0         Rx multicast packet per second:0

          Tx broadcast packet:0         Tx broadcast packet per second:0

          Tx multicast packet:0         Tx multicast packet per second:0



Verification

show datapath port 

 

 

Datapath Port Table Entries

---------------------------

 

Flags: Q - trunk,  T - trusted, B - blocked,  L - LAG

       M - tunneled node, X - xSec, J - Jumbo enabled

 

Port      PVID  Ingress ACL  Egress ACL  Session ACL   MTU       Flags

--------  ----  -----------  ----------  -----------   ------    ------

0/0/0     1000  0            0           0            9000      TJ

0/0/1     1     0            0           0            9000      QTJ

0/0/2     1     0            0           0            1500      B

0/0/3     1     0            0           0            1500      B

0/0/4     1     0            0           0            1500      B

0/0/5     1     0            0           0            1500      B

 

 

However, the bss-table  output shows the tunnel MTU.

 

show ap bss-table ap-name "AP-039-Test-RI-1"

 

 

fm (forward mode): T-Tunnel, S-Split, D-Decrypt Tunnel, B-Bridge (s-standard, p-persistent, b-backup, a-always), n-anyspot

 

Aruba AP BSS Table

------------------

bss                ess  port  ip            phy    type  ch/EIRP/max-EIRP  cur-cl  ap name           in-t(s)  tot-t  mtu   acl-state  acl  fm

---                ---  ----  --            ---    ----  ----------------  ------  -------           -------  -----  ---   ---------  ---  --

18:64:72:29:60:d0       N/A   129.10.1.250  a-VHT  am    ?/?/?             0       AP-039-Test-RI-1  0        40s    1500  -          2    Bs

18:64:72:29:60:c0       N/A   129.10.1.250  g-HT   am    ?/?/?             0       AP-039-Test-RI-1  0        40s    1500  -          2    Bs

 

 

 

For AP, we can see the MTU for eth0 and Eth1 in below output taken from AP- techsupport.

 

ifconfig output for eth0

------------------------

eth0      Link encap:Ethernet  HWaddr 18:64:72:CA:96:0C 

---------------------------------------------------------

          UP BROADCAST RUNNING SLAVE MULTICAST  MTU:9000  Metric:1

          RX packets:378 errors:0 dropped:0 overruns:0 frame:0

          TX packets:173 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000

          RX bytes:51711 (50.4 KiB)  TX bytes:108517 (105.9 KiB)

          Base address:0x6000

 

          Rx broadcast packet:0         Rx broadcast packet per second:0

          Rx multicast packet:0         Rx multicast packet per second:0

          Tx broadcast packet:0         Tx broadcast packet per second:0

          Tx multicast packet:0         Tx multicast packet per second:0

 

ifconfig output for eth1

------------------------

eth1      Link encap:Ethernet  HWaddr 18:64:72:CA:96:0C 

---------------------------------------------------------

          UP BROADCAST SLAVE MULTICAST  MTU:9000  Metric:1

          RX packets:0 errors:0 dropped:0 overruns:0 frame:0

          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000

          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

          Base address:0xe000

 

          Rx broadcast packet:0         Rx broadcast packet per second:0

          Rx multicast packet:0         Rx multicast packet per second:0

          Tx broadcast packet:0         Tx broadcast packet per second:0

          Tx multicast packet:0         Tx multicast packet per second:0

Version history
Revision #:
2 of 2
Last update:
‎03-31-2017 03:03 AM
Updated by:
 
Labels (1)
Contributors
Comments
ian.cresswell@rga.com

Not sure I understand what is being shown here

Datapath port size is 9000
bss-table shows the tunnel size of 1500
AP has an MTU of 9000 for eth0 and eth1

Why do we set the MTU frame size to 9000 when the tunnel size is still 1500?

Search Airheads
cancel
Showing results for 
Search instead for 
Did you mean: