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
Verificationshow 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