You're welcome. No, I haven't experienced this so far. Perhaps the router is just overloaded by traffic? ... View more

Not sure if this is a good explanation, but interrupts cause the CPU to postpone other tasks in order to handle events that need immediate attention. There is always a certain level of interrupts on a router CPU, but 93% is by far too much, at least when it is permanently so high. ... View more

Hi,   @stuart_jones wrote: If this is done gracefully how quickly will the distribution switches change its preferred route to use the other core.  Do you know the OSPF Stub Router Advertisement  feature? In a nutshell, a router advertises LSAs with maximum metrics when you enable it, and makes alternative paths through other routers more preferred by its neighbors. Of course you'll need to check that your IOS supports it.   HTH Rolf ... View more

Hi, we can see 93% CPU usage due to interrupts (only 96 - 93 = 3% are consumed by IOS processes). Do you have CEF enabled? This is a TS-Guide for 7500-series routers, it may help for your 2900 as well: Troubleshooting High CPU Utilization Due to Interrupts  ... View more

Hello,   most times we can solve such problems by reloading only the affected linecard:   c6800#hw-module switch <switch> module <module> reset   This is much faster than reloading a VSS member- or standalone switch and has less impact.   Example: %EARL-SW1_DFC2-1-EXCESSIVE_PARITY_ERROR: EARL 1: Parity error detected in VRAM c6800#hw-module switch 1 module 2 reset   HTH Rolf   ... View more

all routers form full adjacencies with DR and BDR on broadcast- and NBMA Networks. Perhaps I should have been clearer. All routers (DR, BDR, DROther) form full adjacencies (only) with neighbor routers which are the DR or the BDR for that network. ... View more

Full. ... View more

Hi, all routers form full adjacencies with DR and BDR on broadcast- and NBMA networks. Link: RFC 2328 Section 7.4: The Backup Designated Router   Regards, Rolf ... View more

I'm afraid this is quite complicated. You need some more OIDs to translate the indexes, calculate hex to decimal, do the mappings, etc... Have a look at the OID description here: https://snmp.cloudapps.cisco.com/Support/SNMP/do/BrowseOID.do?objectInput=clagAggPortListPorts&translate=Translate&submitValue=SUBMIT&submitClicked=true You are correct: the first two octets indicate the number of ports bundled in the portchannel. The following octet pairs represent the list of ports belonging to the portchannel. I guess it's easier to understand by looking at an example:   Group  Port-channel  Protocol    Ports ------+-------------+-----------+----------------------------------------------- 3      Po3(SU)         LACP      Te1/2/12(P)    Te2/3/5(P) clagAggPortListPorts.221 = "00 02 08 8C 11 05" cieIfDot1dBaseMappingPort.28 = 2188 (0x088C) cieIfDot1dBaseMappingPort.97 = 4357 (0x1105) ifName.28 = Te1/2/12 ifName.97 = Te2/3/5 ifName.221 = Po3   Depending on the channel protocol(s) you use, there may be easier ways. Example with LACP (OID dot3adAggPortAttachedAggID): iso.2.840.10006.300.43.1.2.1.1.13.28 = 221 iso.2.840.10006.300.43.1.2.1.1.13.97 = 221   Hope that helps Rolf ... View more

Hi, this is normal behavior: CISCO-PRODUCTS-MIB cat4500X32 OBJECT IDENTIFIER ::= { ciscoProducts 1606 } -- Cisco Catalyst 4500X series fixed 10GE aggregation switch with 32 10GE SFP+ ports cat4xxxVirtualSwitch OBJECT IDENTIFIER ::= { ciscoProducts 1732 } -- Catalyst 4xxx Virtual Switch   HTH Rolf ... View more