[c-nsp] Has there been a Cisco network device with GE management port while other ports are FE or lower?

[Martin T]

Hi,

I need to know, if GigabitEthernet0(returned by SNMP
ifDescr)/Gi0(returned by ifName) is a Management Ethernet interface or
not. My assumption is that Cisco has never made a network device,
where Management Ethernet is a 1GigE port while non-management port(s)
are Ethernet or Fast Ethernet ports. In other words, if device has any
other Gi ports besides GigabitEthernet0, then GigabitEthernet0 is
always a Management Ethernet port?


thanks,
Martin
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[Nick Cutting]

Hmm I seem to remember on some older version of the CSR code (cloud services router) they had a G0 interface.

Also - the only other place you might see it is on a 8xx series router.

-----Original Message-----
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Subject: [c-nsp] Has there been a Cisco network device with GE management port while other ports are FE or lower?

This message originates from outside of your organisation.

Hi,

I need to know, if GigabitEthernet0(returned by SNMP ifDescr)/Gi0(returned by ifName) is a Management Ethernet interface or not. My assumption is that Cisco has never made a network device, where Management Ethernet is a 1GigE port while non-management port(s) are Ethernet or Fast Ethernet ports. In other words, if device has any other Gi ports besides GigabitEthernet0, then GigabitEthernet0 is always a Management Ethernet port?


thanks,
Martin
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[Steve Mikulasik]

In my experience G0 is always a management interface.



From: cisco-nsp <cisco-nsp-***@puck.nether.net> On Behalf Of Martin T
Sent: Wednesday, October 24, 2018 10:27 AM
To: cisco-***@puck.nether.net
Subject: [c-nsp] Has there been a Cisco network device with GE management port while other ports are FE or lower?

Hi,

I need to know, if GigabitEthernet0(returned by SNMP
ifDescr)/Gi0(returned by ifName) is a Management Ethernet interface or
not. My assumption is that Cisco has never made a network device,
where Management Ethernet is a 1GigE port while non-management port(s)
are Ethernet or Fast Ethernet ports. In other words, if device has any
other Gi ports besides GigabitEthernet0, then GigabitEthernet0 is
always a Management Ethernet port?


thanks,
Martin
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[Howard Jones]

Post by Martin T
Hi,
I need to know, if GigabitEthernet0(returned by SNMP
ifDescr)/Gi0(returned by ifName) is a Management Ethernet interface or
not. My assumption is that Cisco has never made a network device,
where Management Ethernet is a 1GigE port while non-management port(s)
are Ethernet or Fast Ethernet ports. In other words, if device has any
other Gi ports besides GigabitEthernet0, then GigabitEthernet0 is
always a Management Ethernet port?

It'd be weird, but potentially a chassis router with no other ethernet
ports on the controller board? (e.g. an ASR 1000 with a strange
combination of slower/non-ethernet line cards?)

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[Martin T]

Thanks for replies!

Post by Nick Cutting
Hmm I seem to remember on some older version of the CSR code (cloud services router) they had a G0 interface.

According to https://www.cisco.com/c/en/us/td/docs/routers/csr1000/software/configuration/b_CSR1000v_Configuration_Guide/b_CSR1000v_Configuration_Guide_chapter_01010.html,
the first vNIC was automatically mapped to the Gi0 management
interface in IOS XE Release 3.10S and earlier. This is a good
exception.

Post by Nick Cutting
Also - the only other place you might see it is on a 8xx series router.

Yes, for example in Cisco 891, which has a 1GigE WAN port:
Loading Image...


In summary, if GigabitEthernet0 is not the only GigabitEthernet port,
then it is definitely a management Ethernet interface. If
GigabitEthernet0 is the only GigabitEthernet port, then it is
impossible to say, if it is a management port(for example, CSR running
IOS XE 3.10S or ASR with slower/non-ethernet line cards) or
non-management port(for example, some Cisco 800 series models)?


thanks,
Martin
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[c***@marenda.net]

Post by Nick Cutting

Post by Nick Cutting
Also - the only other place you might see it is on a 8xx series

router.
https://i.ebayimg.com/images/i/112239287188-0-1/s-l1000.jpg
In summary, if GigabitEthernet0 is not the only GigabitEthernet port,
then it is definitely a management Ethernet interface. If
GigabitEthernet0 is the only GigabitEthernet port, then it is
impossible to say, if it is a management port(for example, CSR running
IOS XE 3.10S or ASR with slower/non-ethernet line cards) or
non-management port(for example, some Cisco 800 series models)?

No....
Again, here comes the famous 800 Series:
C891F and C89[67]VA have a 8 port Gigethernet-switch (no longer the FE
Switch form the not so famous 89[12] ), one GE WAN Port (combo) and one FE
WAN Port.
Gig0 is here one of the embedded switch-ports, while the WAN Port ist Gig8 .
There is no special (feature-fewer) "Mangement" Port where varying named
(not changeable) VRFs are hardcoded.

Juergen.




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