Hi Everyone.
I'm in the middle of a Nexus 5000 project and recognized today while configuring port-channels, that some of the interface numbers are reserved for internal use.
Is it possible to change or configure which port-channel interface numbers are allocated for internal use by NX-OS?
Unfortunatly I wasn't able to find a solution for this issue in the offical Nexus documentation, the search function of this forum or Google. If I did miss something or didn't look careful enough at the Nexus docs, I'm also happy with RTFM (... fine manual) responses and links to the info :-)
Thanks in advance.
- Jochen
Additional info:
Nexus5k(config)# interface port-channel 128
ignored port-channel128: internally used, configuration not allowed
Port-Channels 111, 113, 115, 119, 121, 200, 211, 222 were created manually, but 127 - 129 were not.
Nexus5k# show port-channel usage
Total 11 port-channel numbers used
============================================
Used : 111 , 113 , 115 , 119 , 121 , 127 - 129 , 200 , 211 , 222
Unused: 1 - 110 , 112 , 114 , 116 - 118 , 120 , 122 - 126 , 130 - 199
201 - 210 , 212 - 221 , 223 - 4096
(some numbers may be in use by SAN port channels)
I couldn't find any info about 129, but it seems like 127 and 128 are used for the layer 3 module. All member ports of those two channels are assigned to module 3.
Nexus5k# show port-channel internal info all
...
port-channel127
channel : 127
bundle : 65535
ifindex : 0x1600007e
admin mode : on
oper mode : on
fop ifindex : 0x1a10e000
nports : 16
active : 16
pre cfg : 0
ltl: : 0
lif: : 0
iod: : 72
global id : 2
flag : 10
lock count : 0
num. of SIs : 0
ac mbrs : 0 0
ethpm bundle lock count : 0
bundle res global id : 2
Members:
Ethernet3/1 [bundle_no = 0]
Ethernet3/2 [bundle_no = 0]
Ethernet3/3 [bundle_no = 0]
Ethernet3/4 [bundle_no = 0]
Ethernet3/5 [bundle_no = 0]
Ethernet3/6 [bundle_no = 0]
Ethernet3/7 [bundle_no = 0]
Ethernet3/8 [bundle_no = 0]
Ethernet3/9 [bundle_no = 0]
Ethernet3/10 [bundle_no = 0]
Ethernet3/11 [bundle_no = 0]
Ethernet3/12 [bundle_no = 0]
Ethernet3/13 [bundle_no = 0]
Ethernet3/14 [bundle_no = 0]
Ethernet3/15 [bundle_no = 0]
Ethernet3/16 [bundle_no = 0]
port-channel external lock:
Lock Info: resource [port-channel 127]
type[0] p_gwrap[(nil)]
FREE @ 802892 usecs after Tue Jan 3 14:58:21 2012
type[1] p_gwrap[(nil)]
FREE @ 167573 usecs after Tue Jan 3 14:58:24 2012
type[2] p_gwrap[(nil)]
FREE @ 167424 usecs after Tue Jan 3 14:58:24 2012
0x1600007e
internal (ethpm bundle) lock:
Lock Info: resource [port-channel 127]
type[0] p_gwrap[(nil)]
FREE @ 802876 usecs after Tue Jan 3 14:58:21 2012
type[1] p_gwrap[(nil)]
FREE @ 950989 usecs after Tue Jan 3 14:58:24 2012
type[2] p_gwrap[(nil)]
FREE @ 950556 usecs after Tue Jan 3 14:58:24 2012
0x1600007e
port-channel128
channel : 128
bundle : 65535
ifindex : 0x1600007f
admin mode : on
oper mode : on
fop ifindex : 0x1a110000
nports : 16
active : 16
pre cfg : 0
ltl: : 0
lif: : 0
iod: : 71
global id : 1
flag : 10
lock count : 0
num. of SIs : 0
ac mbrs : 0 0
ethpm bundle lock count : 0
bundle res global id : 1
Members:
Ethernet3/17 [bundle_no = 0]
Ethernet3/18 [bundle_no = 0]
Ethernet3/19 [bundle_no = 0]
Ethernet3/20 [bundle_no = 0]
Ethernet3/21 [bundle_no = 0]
Ethernet3/22 [bundle_no = 0]
Ethernet3/23 [bundle_no = 0]
Ethernet3/24 [bundle_no = 0]
Ethernet3/25 [bundle_no = 0]
Ethernet3/26 [bundle_no = 0]
Ethernet3/27 [bundle_no = 0]
Ethernet3/28 [bundle_no = 0]
Ethernet3/29 [bundle_no = 0]
Ethernet3/30 [bundle_no = 0]
Ethernet3/31 [bundle_no = 0]
Ethernet3/32 [bundle_no = 0]
port-channel external lock:
Lock Info: resource [port-channel 128]
type[0] p_gwrap[(nil)]
FREE @ 800199 usecs after Tue Jan 3 14:58:21 2012
type[1] p_gwrap[(nil)]
FREE @ 913422 usecs after Tue Jan 3 14:58:23 2012
type[2] p_gwrap[(nil)]
FREE @ 913272 usecs after Tue Jan 3 14:58:23 2012
0x1600007f
internal (ethpm bundle) lock:
Lock Info: resource [port-channel 128]
type[0] p_gwrap[(nil)]
FREE @ 800183 usecs after Tue Jan 3 14:58:21 2012
type[1] p_gwrap[(nil)]
FREE @ 266724 usecs after Tue Jan 3 14:58:27 2012
type[2] p_gwrap[(nil)]
FREE @ 266308 usecs after Tue Jan 3 14:58:27 2012
0x1600007f
...
Nexus5k# show module
Mod Ports Module-Type Model Status
--- ----- -------------------------------- ---------------------- ------------
1 32 O2 32X10GE/Modular Universal Pla N5K-C5548UP-SUP active *
3 0 O2 Daughter Card with L3 ASIC N55-D160L3 ok
Mod Sw Hw World-Wide-Name(s) (WWN)
--- -------------- ------ --------------------------------------------------
1 5.0(3)N2(1) 1.0 --
3 5.0(3)N2(1) 1.0 --
Mod MAC-Address(es) Serial-Num
--- -------------------------------------- ----------
1 547f.0000.1111 to 547f.c0ff.ee00 C0FFEE
3 0000.0000.0000 to 0000.0000.000f C0FFEE
