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Re: Encryption between two Sites connected through Metro-E

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Hello guys,

 

How third-party device work with 802.1AE  0x888e frame? 

For example we need create this Topology

 

EX4300 macsec port  -------access port SW access port ---------macsec port EX4300.

its should work?

 


Re: Encryption between two Sites connected through Metro-E

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Does your intermediate switch support MACSEC?  If yes, then 'theoritcally' this should work but may need some tweaking to get settings properly done.  If not, and device is indeed a switch, then answer is most likely will not work,ever.  MACSEC is a point-to-point protocol and is not designed to support pass-through where MAC headers would change.  I would fully expect the MACSEC link to not even come up - key exchange will fail.

 

Now if your intermediate device acted like a 'hub' then it might work.  Likewise, IPSEC, would also not work in such a configuration, without IPSEC support at intermediate SW.

 

Good luck.

Re: EX4600 RDMA over Converged Ethernet (RoCE) support?

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Just FYI.  This enhanced supported is scheduled for 17.4 release, but will most likely only be supported (tested) with QFX5110, at least at that time frame.  For any new deployments, people should only consider QFX5110, and not QFX5100.  Whether EX4600 also receives this support is to be determined.

 

Again, just FYI.

Re: Encryption between two Sites connected through Metro-E

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i try test in lab:

 

EX4300 macsec port >>> bridge domain MX >>>> macsec port EX4550 

this not working

 

EX4300 macsec port >>> L2Circ/connections MX >>>> macsec port EX4550 

this working.

 

I don't understand why we can't wrap our 802.1AE in 802.1Q, then we will be able to forward on TAGs 802.1q

 

cisco support:

Support for VLAN tag in the clear option to enable Carrier Ethernet Service Multiplexing.

Enable flow-control RX on TX off EX4550

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Dear All

 

I have a pair of EX 4550 running 12.3R7.7 in a virtual Chassis as dedicated iSCSI switches, we have been having xome issue with one of the storage units connected to the switches and the manufacture says we need to enable flow-control and have RX on and TX off.

 

When I connect to the switches the only option I have is to enable flow-control under ether-opitions or no-flow-control.

 

Does any one know is this a feature in a newer version of junos?

 

From some research I can see it is possible on the 4600 but can not find anything for the 4550.

 

Regards

 

Richard

Re: Enable flow-control RX on TX off EX4550

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Hi ,

 

I could see this workingin 12.3 , what error you are getting ?

 

# show | compare 
[edit interfaces]
+   xe-0/0/29 {
+       ether-options {
+           flow-control;
+       }
+   }

 

STP on ex4550

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Hi,

 

we have ex4550 as core with ex4300 as edge switches. I would like to setup another ex4550 as an edge switch due to its 10G ports. I am not farmilar with the vstp setup on this model.

since this is an edge, would something like this

 

set protocols vstp vlan all bridge-priority 60k

set protocols vstp vlan 10 interface xe-0/0/0.0 edge

thank you in advance.

Re: STP on ex4550

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Why run any form of STP at all?  STP designs (outside of Cisco) went out 10+ years ago.  Just change the 2 x 10GE connections from remote EX4550 to EX4550 in the code to an AE/LAG and you'll have active-active on both links, without need to STP.

 

With today's various other technologies, STP should really never be needed.  Primary case (for Juniper) is interoperability with previously configured/designed Cisco networks.  For EX to EX, you could also use default RSTP config to start with.


Re: Enable flow-control RX on TX off EX4550

Re: Encryption between two Sites connected through Metro-E

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Because in 1st case you are changing the frame, as MX acts like a switch.  In 2nd it is just pass through, where MX functions more like dark fiber connection, with no frame manipluation.

 

It is the way MX config options work.  I am sure for Cisco their config option does the same thing, just different command structure.

 

My 2 cents worth.

Re: Enable flow-control RX on TX off EX4550

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Hi

 

Thank you for confirming that, such a basic reqirement on these switches but not supported.  Hope Juniper get this sorted at some point.

 

Richard

Re: Encryption between two Sites connected through Metro-E

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j-masec.PNG

 

Thank you for reply.

I want to know if supports Juniper this feature ( clear 802.1q tag)

 

j-masec2.PNG

 

 

Re: promiscuous mode

VC EX2200 problem

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Hi my VC ex2200 stoped forwarding packets. I found this in chasis log. Looks like virtual chasis issue. Could you please help me what could cause this issue and what exactly could happen? Thanks
Sep 20 07:02:17  rcv: ch_ipc_dispatch() null ipc read for args 0x6c2800 pipe 0x6c60c0, fru FPC 0 errno 60
Sep 20 07:02:17  ch_connection_shutdown: Destroying the IPC pipe
Sep 20 07:02:17  pic detach portinfo, pic 0 fpc 0
Sep 20 07:02:17  pic detach portinfo, pic 1 fpc 0
Sep 20 07:02:17  fpc_disconnect_generic: fpc 0 state Online cargs 0x6c2800 clean_shutdown 0, offline_reason=None
Sep 20 07:02:17  -- FPC 0, last request 132, state Online
Sep 20 07:02:17 CHASSISD_IPC_CONNECTION_DROPPED: Dropped IPC connection for FPC 0
Sep 20 07:02:17 CHASSISD_IFDEV_DETACH_FPC: ifdev_detach_fpc(0)
Sep 20 07:02:46  ifdev_detach: skipping ifd vcp-255/0/0
Sep 20 07:02:46  ifdev_detach: skipping ifd vcp-255/0/1
Sep 20 07:05:19  ifd ge-0/0/2 marked as gone
Sep 20 07:05:21  ifd ge-0/0/3 marked as gone
Sep 20 07:05:21  ifd ge-0/0/4 marked as gone
Sep 20 07:05:21  ifd ge-0/0/5 marked as gone
Sep 20 07:05:22  ifd ge-0/0/6 marked as gone
Sep 20 07:05:22  ifd ge-0/0/7 marked as gone
Sep 20 07:05:22  ifd ge-0/0/8 marked as gone
Sep 20 07:05:22  ifd ge-0/0/9 marked as gone
Sep 20 07:05:22  ifd ge-0/0/10 marked as gone
Sep 20 07:05:24  ifd ge-0/0/11 marked as gone
Sep 20 07:05:24  ifd ge-0/0/12 marked as gone
Sep 20 07:05:24  ifd ge-0/0/13 marked as gone
Sep 20 07:05:24  ifd ge-0/0/14 marked as gone
Sep 20 07:05:24  ifd ge-0/0/15 marked as gone
Sep 20 07:05:25  ifd ge-0/0/16 marked as gone
Sep 20 07:05:25  ifd ge-0/0/17 marked as gone
Sep 20 07:05:25  ifd ge-0/0/18 marked as gone
Sep 20 07:05:25  ifd ge-0/0/19 marked as gone
Sep 20 07:05:25  ifd ge-0/0/20 marked as gone
Sep 20 07:05:25  ifd ge-0/0/21 marked as gone
Sep 20 07:05:25  ifd ge-0/0/22 marked as gone
Sep 20 07:05:26  ifd ge-0/0/23 marked as gone
Sep 20 07:05:27  fpc_offline_now - slot 0, reason: None, error Chassis connection dropped transition state 1
Sep 20 07:05:27  mic_get_mic_slot: clp1: fpc_slot=0, pic_slot=0, i2c=0xf037
Sep 20 07:05:27  mic_get_mic_slot: clp1: fpc_slot=0, pic_slot=1, i2c=0xf0c2
Sep 20 07:05:27  hwdb: entry for fpc 1335 at slot 0 deleted
Sep 20 07:05:27 CHASSISD_SNMP_TRAP7: SNMP trap generated: FRU removal (jnxFruContentsIndex 7, jnxFruL1Index 1, jnxFruL2Index 0, jnxFruL3Index 0, jnxFruName FPC: EX2200-24T-4G @ 0/*/*, jnxFruType 3, jnxFruSlot 0)
Sep 20 07:05:27 CHASSISD_SNMP_TRAP7: SNMP trap generated: FRU removal (jnxFruContentsIndex 7, jnxFruL1Index 1, jnxFruL2Index 0, jnxFruL3Index 0, jnxFruName FPC: EX2200-24T-4G @ 0/*/*, jnxFruType 3, jnxFruSlot 0)
Sep 20 07:05:27  FPC 1 removed
Sep 20 07:05:27 CHASSISD_SNMP_TRAP7: SNMP trap generated: FRU removal (jnxFruContentsIndex 7, jnxFruL1Index 2, jnxFruL2Index 0, jnxFruL3Index 0, jnxFruName FPC: EX2200-24T-4G @ 1/*/*, jnxFruType 3, jnxFruSlot 1)
Sep 20 07:05:27 CHASSISD_FRU_OFFLINE_NOTICE: Taking FPC 1 offline: Removal
Sep 20 07:05:27  fpc_down slot 1 reason Removal cargs 0x6c2b20
Sep 20 07:05:27  pic detach portinfo, pic 0 fpc 1
Sep 20 07:05:27  pic detach portinfo, pic 1 fpc 1
Sep 20 07:05:27  fpc_disconnect_generic: fpc 1 state Empty cargs 0x6c2b20 clean_shutdown 0, offline_reason=Removal
Sep 20 07:05:27  -- FPC 1, last request 132, state Empty
Sep 20 07:05:27  fpc_disconnect_generic - FPC 1 was removed!
Sep 20 07:05:27 CHASSISD_IPC_CONNECTION_DROPPED: Dropped IPC connection for FPC 1
Sep 20 07:05:27 CHASSISD_IFDEV_DETACH_FPC: ifdev_detach_fpc(1)
Sep 20 07:05:28  ifdev_detach: skipping ifd vcp-255/0/0
Sep 20 07:05:28  ifdev_detach: skipping ifd vcp-255/0/1
Sep 20 07:05:28  ifd ge-1/0/2 marked as gone
Sep 20 07:05:28  ifd ge-1/0/3 marked as gone
Sep 20 07:05:28  ifd ge-1/0/4 marked as gone
Sep 20 07:05:28  ifd ge-1/0/5 marked as gone
Sep 20 07:05:28  ifd ge-1/0/6 marked as gone
Sep 20 07:05:29  ifd ge-1/0/7 marked as gone
Sep 20 07:05:29  ifd ge-1/0/8 marked as gone
Sep 20 07:05:29  ifd ge-1/0/9 marked as gone
Sep 20 07:05:29  ifd ge-1/0/10 marked as gone
Sep 20 07:05:29  ifd ge-1/0/11 marked as gone
Sep 20 07:05:29  ifd ge-1/0/12 marked as gone
Sep 20 07:05:29  ifd ge-1/0/13 marked as gone
Sep 20 07:05:29  ifd ge-1/0/14 marked as gone
Sep 20 07:05:30  ifd ge-1/0/15 marked as gone
Sep 20 07:05:30  ifd ge-1/0/16 marked as gone
Sep 20 07:05:30  ifd ge-1/0/17 marked as gone
Sep 20 07:05:30  ifd ge-1/0/18 marked as gone
Sep 20 07:05:30  ifd ge-1/0/19 marked as gone
Sep 20 07:05:30  ifd ge-1/0/20 marked as gone
Sep 20 07:05:30  ifd ge-1/0/21 marked as gone
Sep 20 07:05:31  ifd ge-1/0/22 marked as gone
Sep 20 07:05:31  ifd ge-1/0/23 marked as gone
Sep 20 07:05:31  fpc_offline_now - slot 1, reason: Removal, error Chassis connection dropped transition state 1

Re: promiscuous mode

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I believe that link talks about how to set up promiscous mode on an SRX, generally used for off-line traffic analysis via a port mirror with a SRX.

 

Nishant1, if you want assistance please tell us which product, what SW release, and more details, such as maybe the whole log file.


Re: VC EX2200 problem

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What do the logs on the missing VC member say? This essentially just says the missing member became disconnected.

Re: VC EX2200 problem

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HI

 

As mentioned we need logs from other members as well to understand why its dropping connection to the FPC.

 

Suggest if you could raise a JTAC case.

 

Regards

Partha

Re: VC EX2200 problem

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Hi thx for answer here's related log from backup member

Sep 20 07:02:13  op 3 for ifd bme0
Sep 20 07:02:13  op 1 for ifd lo0
Sep 20 07:02:13  could not retrive old mac address 0
Sep 20 07:02:13 CHASSISD_ACQUIRE_MASTERSHIP: Acquire mastership notification
Sep 20 07:02:13  if_init
Sep 20 07:02:13  ifdev_learn_pic_types:
Sep 20 07:02:13  skipping ifd vcp-255/0/0
Sep 20 07:02:13  skipping ifd vcp-255/0/1
Sep 20 07:02:13  mcontrol_acquire_mastership Calling reconnect
Sep 20 07:02:13  ch_ipc_reconnect
Sep 20 07:02:13  ch_ipc_reconnect reconnect configured
Sep 20 07:02:13  ch_ipc_reconnect reconnect proceed
Sep 20 07:02:13  ch_ipc_reconnect_wait for 10 seconds
Sep 20 07:02:13  hw.vc.member_valid_bitmap = 2
Sep 20 07:02:13 CHASSISD_IFDEV_DETACH_FPC: ifdev_detach_fpc(0)
Sep 20 07:02:13  ifdev_detach: skipping ifd vcp-255/0/0
Sep 20 07:02:13  ifdev_detach: skipping ifd vcp-255/0/1
Sep 20 07:02:13 CHASSISD_IFDEV_DETACH_FPC: ifdev_detach_fpc(2)
Sep 20 07:02:13  ifdev_detach: skipping ifd vcp-255/0/0
Sep 20 07:02:13  ifdev_detach: skipping ifd vcp-255/0/1
Sep 20 07:02:13 CHASSISD_IFDEV_DETACH_FPC: ifdev_detach_fpc(3)
Sep 20 07:02:13  ifdev_detach: skipping ifd vcp-255/0/0
Sep 20 07:02:13  ifdev_detach: skipping ifd vcp-255/0/1
Sep 20 07:02:13 CHASSISD_IFDEV_DETACH_FPC: ifdev_detach_fpc(4)
Sep 20 07:02:13  ifdev_detach: skipping ifd vcp-255/0/0
Sep 20 07:02:13  ifdev_detach: skipping ifd vcp-255/0/1
Sep 20 07:02:13 CHASSISD_IFDEV_DETACH_FPC: ifdev_detach_fpc(5)
Sep 20 07:02:13  ifdev_detach: skipping ifd vcp-255/0/0
Sep 20 07:02:13  ifdev_detach: skipping ifd vcp-255/0/1
Sep 20 07:02:13 CHASSISD_IFDEV_DETACH_FPC: ifdev_detach_fpc(6)
Sep 20 07:02:13  ifdev_detach: skipping ifd vcp-255/0/0
Sep 20 07:02:13  ifdev_detach: skipping ifd vcp-255/0/1
Sep 20 07:02:13 CHASSISD_IFDEV_DETACH_FPC: ifdev_detach_fpc(7)
Sep 20 07:02:13  ifdev_detach: skipping ifd vcp-255/0/0
Sep 20 07:02:13  ifdev_detach: skipping ifd vcp-255/0/1
Sep 20 07:02:13 CHASSISD_IFDEV_DETACH_FPC: ifdev_detach_fpc(8)
Sep 20 07:02:13  ifdev_detach: skipping ifd vcp-255/0/0
Sep 20 07:02:13  ifdev_detach: skipping ifd vcp-255/0/1
Sep 20 07:02:13 CHASSISD_IFDEV_DETACH_FPC: ifdev_detach_fpc(9)
Sep 20 07:02:13  ifdev_detach: skipping ifd vcp-255/0/0
Sep 20 07:02:13  ifdev_detach: skipping ifd vcp-255/0/1
Sep 20 07:02:13  rtsock_handle_mastership_switch
Sep 20 07:02:13  rtsock_init non ifstate async socket
Sep 20 07:02:13  Learnt system mac base f0:1c:2d:5e:3e:40
Sep 20 07:02:13  create_pseudo_entry: pic desc 161, speed 0, hw qs 8supported qs 8, flags 0x0
Sep 20 07:02:13 CHASSISD_IFDEV_CREATE_NOTICE: create_pseudos: created pseudo interface device for ae0
Sep 20 07:02:13  ifdev_create entered ae0
Sep 20 07:02:13  create_pseudo_entry: pic desc 161, speed 0, hw qs 8supported qs 8, flags 0x0
Sep 20 07:02:13 CHASSISD_IFDEV_CREATE_NOTICE: create_pseudos: created pseudo interface device for ae1
Sep 20 07:02:13  ifdev_create entered ae1
Sep 20 07:02:13  create_pseudo_entry: pic desc 161, speed 0, hw qs 8supported qs 8, flags 0x0
Sep 20 07:02:13 CHASSISD_IFDEV_CREATE_NOTICE: create_pseudos: created pseudo interface device for ae2
Sep 20 07:02:14  ifdev_create entered ae2
Sep 20 07:02:14  create_pseudo_entry: pic desc 161, speed 0, hw qs 8supported qs 8, flags 0x0
Sep 20 07:02:14 CHASSISD_IFDEV_CREATE_NOTICE: create_pseudos: created pseudo interface device for ae3
Sep 20 07:02:14  ifdev_create entered ae3
Sep 20 07:02:14  create_pseudo_entry: pic desc 161, speed 0, hw qs 8supported qs 8, flags 0x0
Sep 20 07:02:14 CHASSISD_IFDEV_CREATE_NOTICE: create_pseudos: created pseudo interface device for ae4
Sep 20 07:02:14  ifdev_create entered ae4
Sep 20 07:02:14  create_pseudo_entry: pic desc 161, speed 0, hw qs 8supported qs 8, flags 0x0
Sep 20 07:02:14 CHASSISD_IFDEV_CREATE_NOTICE: create_pseudos: created pseudo interface device for ae5
Sep 20 07:02:14  ifdev_create entered ae5
Sep 20 07:02:14  create_pseudo_entry: pic desc 161, speed 0, hw qs 8supported qs 8, flags 0x0
Sep 20 07:02:14 CHASSISD_IFDEV_CREATE_NOTICE: create_pseudos: created pseudo interface device for ae6
Sep 20 07:02:14  ifdev_create entered ae6
Sep 20 07:02:14  create_pseudo_entry: pic desc 161, speed 0, hw qs 8supported qs 8, flags 0x0
Sep 20 07:02:14 CHASSISD_IFDEV_CREATE_NOTICE: create_pseudos: created pseudo interface device for ae7
Sep 20 07:02:14  ifdev_create entered ae7
Sep 20 07:02:14  create_pseudo_entry: pic desc 161, speed 0, hw qs 8supported qs 8, flags 0x0
Sep 20 07:02:14 CHASSISD_IFDEV_CREATE_NOTICE: create_pseudos: created pseudo interface device for ae8
Sep 20 07:02:14  ifdev_create entered ae8
Sep 20 07:02:14  create_pseudo_entry: pic desc 161, speed 0, hw qs 8supported qs 8, flags 0x0
Sep 20 07:02:14 CHASSISD_IFDEV_CREATE_NOTICE: create_pseudos: created pseudo interface device for ae9
Sep 20 07:02:14  ifdev_create entered ae9
Sep 20 07:02:14  create_pseudo_entry: pic desc 161, speed 0, hw qs 8supported qs 8, flags 0x0
Sep 20 07:02:14 CHASSISD_IFDEV_CREATE_NOTICE: create_pseudos: created pseudo interface device for ae10
Sep 20 07:02:14  ifdev_create entered ae10
Sep 20 07:02:14  create_pseudo_entry: pic desc 161, speed 0, hw qs 8supported qs 8, flags 0x0
Sep 20 07:02:14 CHASSISD_IFDEV_CREATE_NOTICE: create_pseudos: created pseudo interface device for ae11
Sep 20 07:02:14  ifdev_create entered ae11
Sep 20 07:02:14  create_pseudo_entry: pic desc 161, speed 0, hw qs 8supported qs 8, flags 0x0
Sep 20 07:02:14 CHASSISD_IFDEV_CREATE_NOTICE: create_pseudos: created pseudo interface device for ae12
Sep 20 07:02:14  ifdev_create entered ae12
Sep 20 07:02:15  create_pseudo_entry: pic desc 161, speed 0, hw qs 8supported qs 8, flags 0x0
Sep 20 07:02:15 CHASSISD_IFDEV_CREATE_NOTICE: create_pseudos: created pseudo interface device for ae13
Sep 20 07:02:15  ifdev_create entered ae13
Sep 20 07:02:15  create_pseudo_entry: pic desc 161, speed 0, hw qs 8supported qs 8, flags 0x0
Sep 20 07:02:15 CHASSISD_IFDEV_CREATE_NOTICE: create_pseudos: created pseudo interface device for ae14
Sep 20 07:02:15  ifdev_create entered ae14
Sep 20 07:02:15  create_pseudo_entry: pic desc 161, speed 0, hw qs 8supported qs 8, flags 0x0
Sep 20 07:02:15 CHASSISD_IFDEV_CREATE_NOTICE: create_pseudos: created pseudo interface device for ae15
Sep 20 07:02:15  ifdev_create entered ae15
Sep 20 07:02:15 CHASSISD_IFDEV_CREATE_NOTICE: ch_vlan_ifd_add: created interface device for vlan
Sep 20 07:02:15 CHASSISD_IFDEV_CREATE_NOTICE: ch_vlan_ifd_add: created interface device for vme
Sep 20 07:02:15  snmp_rfc3621_init: Initializing the POE MIB OIDs
Sep 20 07:02:15  main_snmp_init
Sep 20 07:02:15  snmp_init: snmp_chassis_id = 0, chas_type = 2
Sep 20 07:02:15  chas_do_registration: or_obj = 0x4b3600, or_rows = 21
Sep 20 07:02:15  chas_do_registration: or_obj = 0x4b3a00, or_rows = 21
Sep 20 07:02:15  chas_do_registration: or_obj = 0x4b3800, or_rows = 21
Sep 20 07:02:15  chas_do_registration: or_obj = 0x4b3c00, or_rows = 21
Sep 20 07:02:15  chas_do_registration: or_obj = 0x4b3e00, or_rows = 21
Sep 20 07:02:34 CHASSISD_SNMP_TRAP10: SNMP trap generated: redundancy switchover (jnxRedundancyContentsIndex 9, jnxRedundancyL1Index 1, jnxRedundancyL2Index 0, jnxRedundancyL3Index 0, jnxRedundancyDescr Routing Engine 1, jnxRedundancyConfig 3, jnxRedundancyState 1, jnxRedundancySwitchoverCount 1, jnxRedundancySwitchoverTime -731504074, jnxRedundancySwitchoverReason 4)
Sep 20 07:02:34  ch_ipc_reconnect_expired: timer expired
Sep 20 07:02:34  FM ch_java_restart_ipc_reconnect_window: fpc_reconnects=0, fpc_present=1
Sep 20 07:02:34  ch_ipc_reconnect_expired: restarting reconnect window
Sep 20 07:02:34  ch_ipc_reconnect_wait for 10 seconds
Sep 20 07:02:34  ipc pipe 0x6c81c0 created
Sep 20 07:02:34  ch_signal_proc: Sent signal 1 to tnp.sntpd, pid=1210
Sep 20 07:02:34  fpc 1 ready, pipe 0x0x6c81c0
Sep 20 07:02:34  ifdev_detach_check: skipping ifd vcp-255/0/0 (what=0)
Sep 20 07:02:34  ifdev_detach_check: skipping ifd vcp-255/0/1 (what=0)
Sep 20 07:02:35  fpc 1 clean, bringing online
Sep 20 07:02:35  send_chassisd_capabs: send chassisd capabilities
Sep 20 07:02:35  send: fpc 1 online cmd
Sep 20 07:02:35  op 1 for ifd ae0
Sep 20 07:02:35  FPC 1 online ack
Sep 20 07:02:35  fpc_announce_online_generic: fpc 1
Sep 20 07:02:35  fpc_online_now - slot 1 - Online
Sep 20 07:02:35  ch_java_sfpplus_send_config_to_cm: sending info fpc 1 pic 1 mode 10
Sep 20 07:02:35  send: fpc 1 Disk Mon stats
Sep 20 07:02:35  send: fpc 1 Disk Mon stats
Sep 20 07:02:35  send: fpc 1 Disk Mon stats
Sep 20 07:02:35  send: fpc 1 Disk Mon stats
Sep 20 07:02:35  fpc 1 creates device
Sep 20 07:02:35  fpc_create_devs: No fpc based dev is required for fpc slot 1, skip fpc dev creation
When I connected to the switch after 8:00 the chasis status was ok and all members are online

Preprovisioned Virtual Chassis
Virtual Chassis ID: d63b.2fbd.4ee5
Virtual Chassis Mode: Enabled
                                           Mstr           Mixed Neighbor List
Member ID  Status   Serial No    Model     prio  Role      Mode ID  Interface
0 (FPC 0)  Prsnt    CW0214440178 ex2200-24t-4g 129 Master*   NA  1  vcp-255/0/0
                                                                 1  vcp-255/0/1
1 (FPC 1)  Prsnt    CW0214440364 ex2200-24t-4g 129 Backup    NA  0  vcp-255/0/0
                                                                 0  vcp-255/0/1
thanks

Re: VC EX2200 problem

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Looks like the virtual chassis interface connection dropped between the switches and was then restored.

 

Use the show interface command on the VC port and see when the "last flap" was.  If this lines up with the time of the logs then the loss of link on the VC is confirmed.

 

show interface ge-x/x/x

Re: promiscuous mode

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