cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
690
Views
0
Helpful
5
Replies

4500X stacks occasionally unreachable

spfister336
Level 2
Level 2

We have several remote site where we have replaced 4506 switches with a stack of two 4500Xs as the site's core switch. They have been working OK for the most part, but we are constantly seeing them unreachable for a few minutes. It happens maybe 2 or 3 times a day and it's happening to different ones each time. When they come up, nothing in the logs seems to indicate there was a problem. I don't see errors on ports, and checking the EIGRP neighbor I don't see any indication that the neighbor relationship was affected at all. All switches, including the AT&T equipment connecting the site to their Opt-E-MAN network show no downtime at all. I don't really have much in the way of clues as to what's going on. I'm thinking it may be some sort of VSS issue (I think this is the first time we've used it in our environment), but I don't see what it might be. Can anyone tell me what I should look at?

5 Replies 5

Philip D'Ath
VIP Alumni
VIP Alumni

What software versions are you using on them?  Some of the earlier IOS-XE releases where "flaky".

Looks like most of them are 3.7.1E

Do you think you could try upgrading one of them to the current release in that train, 3.7.3E?

Resolved Caveats in Cisco IOS XE Release 3.7.3E

 

Bug ID
Headline

CSCum06547

NG3K standalone crashed after removed energywise domain

CSCus17795

Same port name displays in lower and upper case during OpenFlow configuration

CSCus84849

ipdt difference in config and default configuration

CSCus99269

MCMA: dACL should not be synced to MA & should be allowed on MA as well

CSCut14397

Bad parsing when keyword is truncated during OpenFlow LXC configuration

CSCut25533

PnPA: non-vlan CLI should only apply to newly bootup devices

CSCut87285

MAC address being learnt on an individual Port-channel member interface

CSCut88813

WLAN cannot be configured with a space in psk shared key on NGWC 3.7

CSCuu09331

CTS link not passing traffic after SSO

CSCuu15831

Switch reboots when SPAN configured under "cts manual"

CSCuu34717

3850 cts enforcement for multicast traffic

CSCuu36487

Cat3k: OF: Vlan strip action doesnot work for ipv6 packets

CSCuu49195

Access session cache entries not getting updated

CSCuu56466

"Total output drops" counter of a certain ports does not increment

CSCuu56511

OutDiscards counter does not increment

CSCuu66503

HTTPs: IOS HTTPS client not enforcing subject-name verification

CSCuu82607

Evaluation of all for OpenSSL June 2015

CSCuu85807

Switch returns wrong OID when standalone

CSCuu87659

CpmCPUTotal5minRev average value of stack switch 2 on 3850 is incorrect.

CSCuu97048

Traffic is dropped due to static mac entry on foreign interface

CSCuu97550

4500X - SNMP dot1dTpFdbPort retuning incorrect value

CSCuv02964

Memory leak with dot1x on IOS-XE switch

CSCuv07427

TCP connection cannot be established with Openflow agent due to

CSCuv13351

MAC address is learned on RSPAN vlan after stack switchover

CSCuv14890

DHCPv6 solicit frame (IPv6 multicast) frame replication issues

CSCuv19160

Config lock mode during redundancy prevents PnP redirection.

CSCuv19204

NTP Server take 15 - 18 minutes to sync with API-EM clock

CSCuv19773

"nmsp attach suppress" not being added into run-config on WS-C3850-24P

CSCuv20618

3650 - Port goes down when 'no mdix auto' is configured, POE works fine

CSCuv20921

mac address-table learning command should not be allowed for RSPAN vlan

CSCuv22736

After reload, C3850-NM-4-10G/GLC-SX-MM not linkup with speed nonegotiate

CSCuv36348

management port can be added to OpenFlow config

CSCuv42533

Flow addition failing with wildcard match

CSCuv62574

GRE tunnel in up/down state when tunnel source configured via interface

CSCuv78424

Unicast ARP packets are duplicated

CSCuv85232

openflow exclusive config not cleared on standby

CSCuv88334

mismatch in the rf parameters mode between cli/gui

CSCuw06386

Flows are not prgrmd in PD after consecutive clearopenflow switch1 cntrl

CSCuw19798

GRE Tunnel not working on Catalyst 3850

CSCuw21694

Invalid flow count increasing in PD when i remove and add OF ports

CSCuw22050

Switch reports Power device detected when non device is connected

CSCuw28638

3650 Rebooting during EAP-TLS authentication

CSCuw36865

L2 switched traffic matched by L3 SVI VACL in the output direction

CSCuw38233

Mobility tunnel between MA/MC drops when default egress policy is deny

CSCuw39020

access-session vlan-assignment ignore-errors breaks dynamic vlan assign

CSCuw55669

Crash is seen in iosd on switch and auth-mgr

CSCuw67734

CFD CSCun37216 entAliasMappingIdentifier broken on 03.07.02E...

CSCuw73525

3650 DHCPv6 Guard does not block rogue DHCP server to provide IPv6 addr

CSCuw82216

Catalyst3850: Upgrade in install mode corrupts the flash - EXT2-fs error

CSCuw98232

Fixing build breakage for 15.2(3)E/3.7.3E which happened with CSCuv62574

Resolved Caveats in Cisco IOS XE Release 3.7.2E

 

Bug ID
Headline

CSCup55828

Need error message when using a wrong image to do software install

CSCuq44139

Need to disable Macsec for half-duplex mode on downlink ports

CSCus69196

After overnight ping traffic on active, standby sw#6 crashes at iosd

CSCus89656

Trust, DSCP transparency, COPP not working when a member comes up

CSCut26365

Packet drop on 3850 by an unrelated ACL entry

CSCut49440

3850 class-map "match" doesn't work correctly

Resolved Caveats in Cisco IOS XE Release 3.7.1E

There are no caveats to list here.

Resolved Caveats in Cisco IOS XE Release 3.7.0E

 

Bug ID
Headline

CSCun29064

Show switch details show false stack linkdown

CSCun54503

No QOS Per Port Per VLAN configuration option 3650 & 3850

CSCuo00561

Switch unusable for 8 minutes after ?default interface? w/ L3 CTS config

CSCup40892

Wireless clients may be stuck in idle state when FQDN feature is enabled

CSCup62150

After Inter-Switch Roam, QoS policy is not applied to Client

CSCuq02810

STP check bypassed for data traffic sent to switch mac address

Yes, I think we should be to schedule that. I'll give it a try.

Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community:

Review Cisco Networking products for a $25 gift card