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Difan Zhao

C6880-X local span session limit

What is the SPAN session limit on the C6880-X? I have two running in VSS. I googled and I saw that the limit is 2 if it is SUP2 supervisor. How do I know what supervisor module that I am using? "show inventory" says "C6880-X-SUP"

Also in the document about the SUP2 limit, it says "Local SPAN Egress-Only" limit is 14. What is Egress-only session? Does it just mean the SPAN source is "interface te1/1 tx"? Thanks

VIP Expert

that means you need to enter local only


Enter the local-tx keyword to configure egress-only SPAN sessions.


below reference :




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Thanks Balaji. On my 6880 I don't have the option available. Actually, the config syntax is different. It looks like Nexus switch configuration. Can I assume that I am not using SUP2 in my switch?


Thanks for the links however I still don't know what local-tx is. Is it related to SPAN on FEX? Does "local" mean that the source and destination interface have to be on the same FEX? 

Can you post show version - C68XX is not nexus.


to know the modules, show modules post the output here.


68XX do support have FEX - but we need to know your environment to suggest better here.




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I am mentioning SUP2 because in this document it says it is for Cat 6500 however the config seems to be for Nexus switch.


Here are my show version and show module output


wsw01#sh version
Cisco IOS Software, c6880x Software (c6880x-ADVENTERPRISEK9-M), Version 15.1(2)SY4, RELEASE SOFTWARE (fc5)
Technical Support:
Copyright (c) 1986-2014 by Cisco Systems, Inc.
Compiled Wed 05-Nov-14 16:37 by prod_rel_team

ROM: System Bootstrap, Version 15.1(02)SY01 [ Rel 1.1], RELEASE SOFTWARE
wsw01-00rm255r2r1 uptime is 4 years, 13 weeks, 3 days, 22 hours, 49 minutes
Uptime for this control processor is 4 years, 13 weeks, 3 days, 22 hours, 50 minutes
System returned to ROM by reload at 20:40:31 UTC Tue Dec 23 2014
System restarted at 16:21:15 EST Tue Dec 23 2014
System image file is "bootdisk:c6880x-adventerprisek9-mz.SPA.151-2.SY4.bin"
Last reload reason: Reload Command

This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:

If you require further assistance please contact us by sending email to

Cisco C6880-X ( Intel(R) Core(TM) i3- CPU @ 2.00GHz ) processor (revision ) with 3144704K/262144K bytes of memory.
Processor board ID SAL1749HGXQ
Processor signature 0xA7060200
Last reset from s/w reset
16 Virtual Ethernet interfaces
1 Gigabit Ethernet interface
64 Ten Gigabit Ethernet interfaces
1966064K bytes of USB Flash bootdisk (Read/Write)

Configuration register is 0x2102

wsw01# show module
Mod Ports Card Type Model Serial No.
--- ----- -------------------------------------- ------------------ -----------
1 20 DCEF-X 16P SFP+ Multi-Rate C6880-X-16P10G SAL1819SBPE
5 20 6880-X 16P SFP+ Multi-Rate (Active) C6880-X-SUP SAL1749HEXJ

Mod MAC addresses Hw Fw Sw Status
--- ---------------------------------- ------ ------------ ------------ -------
1 6c41.6a49.461f to 6c41.6a49.4632 2.0 15.1(50r)SYL 15.1(2)SY4 Ok
5 c08c.60d7.9e4c to c08c.60d7.9e64 1.1 15.1(02)SY01 15.1(2)SY4 Ok

Mod Sub-Module Model Serial Hw Status
---- --------------------------- ------------------ ----------- ------- -------
1 Distributed Forwarding Card C6880-X-DFC SAL1819SBRR 1.0 Ok
5 Policy Feature Card 4 C6880-X-PFC SAL1749HEWS 1.2 Ok

Mod Online Diag Status
---- -------------------
1 Pass
5 Pass

Could you still elaborate more on local-tx? Thanks!