Cisco Switching/Routing :: Redistribution Of Statics Into OSPF On Nexus 7000
Feb 15, 2012
I'm looking to redistribute static routes in to OSPF on a Nexus 7k. To do this I'll be using a route-map with a match statement. My question is can you match routes using an ACL, a prefic-list or both. The reason that I ask is that in some docs I've read it states the following:
IP access lists—(For policy-based routing only). Match based on source or destination IP address, protocol, or QoS parameters. This tends to indicate that you can't use IP access lists for the match criteria for redistribution.
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Sep 24, 2012
Ok I didn't setup my OSPF on my 7010. Today I found out that any static route I put into my 7010 gets sent into to my MPLS network. My 6509's you have to "Tag" the static rout for this to happen. Was under the impression the same was necessary for the 7010 or at least it had to "match" an access list. How can I fix the below so that by default all static routes are not resdistributed into OSPF?
[CODE]...
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Mar 11, 2012
I have a Nexus 7K router, has 2 ospf process, ospf 1 and ospf2. OSPF1 has several subnets in 10.1.0.0/16 subnet range , OSPF2 has several subnets in 10.2.0.0/16 subnet range. I want to summary OSPF 1 subnets to 10.1.0.0/16 then redistribute to OSPF2.but OSPF 2 didn't receive 10.1.0.0/16. Below is the config
ip prefix-list all seq 10 permit 0.0.0.0/0 le 32
route-map all permit 10
match ip address prefix-list all
router ospf 1
router-id 10.10.3.9
[code]....
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Jul 27, 2012
I am having a problem reaching a soho linksys e1000 router through a second hop cisco 2900 router.Here is a brief topology of the network: I am using OSPF area 100 for all networks except for
192.168.2.0 on R1 to E1000 which is RIPv2
R1 directly connects to R2 with a point-to-point serial on network 192.168.12.0 /30 with ip 192.168.1.13
R1 directly connects to a a switchport using network 192.168.2.0 /24 with ip 192.168.1.75
R3 directly connects to a switchport using network 192.168.1.128.0 /25 with ip 192.168.1.129
R3 directly connects to a different cisco router using ethernet on network 192.168.1.0 with ip 192.168.1.1
E1000 directly connects to a switchport using network 192.168.2.0 /24 with ip 192.168.2.1
The switch has a vlan ip on 192.168.1.128 /25?I can ping from R1 to E1000?I can ping from R3 to R1 192.168.2.75? I can't ping from R3 to E1000 192.168.2.1?show ip route on R2 indicates that network 192.168.2.0 is reachable via the serial connection on 192.168.1.12?I have redistributed rip to ospf area 100 and OSPF to RIP on R1?I am wondering why R1 can reach E1000 on network 192.168.2.0, and why R3 can reach R1s 192.168.2.0 newtork, but R3 can't reach the E1000.There is an R2 router than can reach R1 and also cannot reach E1000, but I assume it's for the same reasons R3 can't, so I've omitted the remainder of that topology for this question.
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Feb 7, 2013
I have two ospf processes running on a single 3570 edge router that has a dedicated transport circuit back to our network core. We are adding an additional "transport" only circuit into a new location that is also apart of the second ospf process backbone which will connect back to our core. There will also be a 3750 for this new circuit termination. Currently we are only redistributing ospf process 2 into ospf process 1 (1 = core backbone).
#router ospf 1
#redistribute ospf 2 subnet
We have no need to have ospf process 1 redistributed into the process 2 tables. That being said, when we add an additional transport ciruit, or path back to our core backbone, will this configuration present any issues with the redistribution process and failover.
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Sep 22, 2011
I have 2 ASBR routers, AGFR01RTR03 and AGFR02RTR03, performing OSPF to OSPF redistribution in both ways for the same ***. They also do summarization for our private addressing scheme. It is all working just fine for that part (neighbors, summarization, redistribution).
AGDC01RTR01 --- AGDC02RTR01 (OSPF 1000 ABRs)
| |
| |
AGFR01RTR03 --- AGFR02RTR03 (OSPF 1000 / 53 ASBRs)
Let's focus on AGDC01RTR01 with a specific entry here (IP subnet is fake) :
Routing entry for 1.1.1.0/25
Known via "ospf 1000", distance 110, metric 300, type inter area
Last update from 10.2.244.76 on GigabitEthernet5/1, 1d03h ago
Routing Descriptor Blocks:
* 10.2.244.76, from 10.2.1.249, 1d03h ago, via GigabitEthernet5/1
Route metric is 300, traffic share count is 1
[code]...
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Sep 6, 2012
Is there a known bug for Nexus 7K version 6.0(4) related to route redistribution?I have few vlan interfaces and being redistributed to the BGP.vlan interfaces are all up ang pingable.After configuring redistribution, vlan route is not in the bgp table.sho ip bgp is saying "path invalid"
BGP routing table entry for 10.165.101.192/28, version 26302
Paths: (3 available, best #3)
Flags: (0x180c0021) on new-list, is not in urib, need resync with RIB, exported, has label
vpn: version 47719, (0x100002) on xmit-list
local label: 492294
[code]....
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Mar 15, 2013
I have been tasked to replace the existing Cat 6500 and 3750 switches by Nexus 7000 and Nexus 2000.I was told initially my boss plans to get 2 x Nexus 7000 and then eventually blow up to 4 x Nexus 7000s.For Nexus, is there a list of tasks / points that i need to consider for building the initial design?
Can i just link the Nexus 7000 like the following?
N7k-A ========= N7k-B
| |
lots of N2ks lots of N2ks
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Dec 9, 2012
Should I install any special license to enable vrf within Nexus 7000 VDC? I observed that vrf routing instance is not enabled in the VDC.
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Mar 3, 2013
I am configuring NTP on a new Cisco Nexus 7000 running version 6.1(2). NTP is working properly between the access switches and Nexus, however when configuring Authentication, NTP is not working anymore.
confguration:
Nexus 7K server
=============
ntp server x.x.x.x
ntp peer q.q.q.q
ntp server e.e.e.e
ntp server r.r.r.r
ntp source-interface Vlanx
[code]...
why NTP authentication is not working !!!!! on Nexus 7000
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Aug 3, 2011
On a 7K (5.0(2)), I have a situation where the FIB and RIB are out of sync. I'm not sure it's causing a problem, but it's been implicated in some weird packet loss issues. It seems like it could cause network issues if you had two routes in the RIB, only one in the FIB, and then you lost the single path in the FIB. How the RIB/FIB gets out of sequence, how to proactively know about it (nothing in the logs here), and whether or not this is a big deal or a red herring?
Here's sample output that illustrates the RIB and FIB being out of sequence.
ROUTER1# show ip route 172.16.100.1
IP Route Table for VRF "default"
'*' denotes best ucast next-hop
[Code].....
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Jan 3, 2013
I have 2 Nexus 5596UPs with a layer 3 cards that are exhibiting some very peculiar behavior. The systems are running 5.1(3)N1(1).I have configured 2 VRF contexts each running their own OSPF process. There is a static gateway of last resort configured on each VRF, which is to an upstream pair of 5585X's in Active/Active. Each OSPF process has the "default-information originate always" command configured, however, backbone neighbors are not recieving a gateway of last resort from the 5596UPs. The applicable configurations are show below. All other routing information is passing correctly between devices in the network. This network is not production, it is a proof of concept for a larger implementation.
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Feb 2, 2012
We recently purchased a pair of 2232TM Fabric eXtenders just to find out that our Nexus 7000 does not support it. Will there be support for the 2232TM FeX in Nexus 7000 any time soon?
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Jul 17, 2012
I have two data centres connected via a L2 DWDM, my manager wants to look into using OTV to get rid of the layer 2 broadcasting issues.
Problem is the DWDM is 1000BaseSX, which is only supported on the N7K-F132XP-15. (and the N7K-M148GS-11 but that doesn't support FCOE, so many bloody caveats). From what I can gather OTV is not supported on the N7K-F132XP-15.
Is it possible to terminate the DWDM on the F1 card & loop another port from the F1 to a port on the N7K-M148GT-11 & run OTV on the M1????
Either using VDCs or just an isolated VLAN on the F1. Is there any better way to do this? Hardware has not yet been purchased.
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Dec 9, 2012
I am seeing an issue that after deleting/recreating one of the VDC in Nexus 7K, VLAN is not been able to be configured within the VDC although it is not actually a reserved VLAN. Could it be anything missing in the license installation? the version of the image is NX-OS 6.1.2
StorageVDC(config)# vlan 100
^
invalid vlans (reserved values) at '^' marker.
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May 5, 2013
We setup two n7K as core switches in our network. We configure VPc peer link as well successfully. We are using mgmt interface of supervisors as a peer keep alive interface, so what happen when this keep alive gets down? Are we loss Vpc peer link between both nexus 7 K?
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Jan 29, 2012
I have a pair of Nexus 7K's running 5.1(3). I have a handful of edge devices that I need to mark ingress traffic, and need to mark both DSCP and CoS. Right now, I have a working config that marks DSCP appropriately.While that works dor DSCP, the MQC will not allow me to mark both DSCP and COS in the same class, and unlike IOS, it appears that Nexus does not have a default DSCP-to-COS mapping. My understanding is this can be solved using table maps, but I don't see how that can solve my problem in this specific scenario (it appears I can do marking or table-map mutation, but not both?). How I can accomplish both?
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Dec 5, 2011
I cannot get the AAA tacacs+ authentication to work on my Nexus 7000.
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Nov 2, 2012
I need to know how is the ambient temperature for the Nexus 7000 switches to plan a new datacenter. In the datasheet I found the following information regarding this topic:"GR-63-CORE Network Equipment Building Standards (NEBS) specification published by Telcordia Technologies in Section 4.1.2". How are the specification for temperature in this standard?
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Mar 4, 2012
regarding QOS on Nexus 7000. Our Nexus 7000's form a collapsed distribution/core layer, our access layer switches are are a mixture of Cisco 3750 & Cisco 4507. 3750 switches will connect to Nexus switches via 1Gb uplink, 4507 switches will connect via 10Gb uplinks. Each Nexus will be connected via 20Gb port channel, all servers connect to the Nexus switches via 1Gb links. We're implementing a new telephone system soon which will be using VOIP so I need to configure the switches to perform QOS. The IP phones will mark the RTP traffic with DSCP value EF and call signaling traffic CS3. I'm fine configuring qos on the access layer switches, its just the Nexus switches which I'm not sure about.
Do I actually need to configure any QOS parameters on the Nexus switches so they will prioritise the VOIP traffic. If my understanding the Nexus switches will trust the DSCP values and assign the traffic to the relevent queues?
Just for information VOIP is the only traffic I will be marking QOS values
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Oct 14, 2012
On Nexus 7000s I want to limit bandwidth of particular IP. I can do this using proper configuratio of IP ACL, policy map and class map. But what if I dont have information on interface? Can I apply bandwidth control for particular IP without knowing the interface?
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Apr 20, 2012
if vPC is supported between a single 2232PP FEX and two 7000 switches running 6.0(1)? I have been researching this for an implementation I am doing for a client and was able to determine it was not supported with earlier versions of 5.0 when the FEX is connected via vPC as I described above, but I can't find anything related to version 6.0(1). I have done this for other clients with 5000 and 2000 switches, but I don't have too much experience with 7000 switches.
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Dec 4, 2011
I have some error messages in the Nexus 7000 log, after searching i cannot find an adequate explanation, pretty much the only thing i can find is below and i don’t think it is very relevant to my situation. The device is in production and so reloading and pulling card willy nilly is the last resort.
Device = Nexus 7018
IOS version = 5.1(2)
Log messages=
2011 Dec 2 14:52:35 IAS01LVSWIPC01 %OC_USD-SLOT8-2-RF_CRC: OC2 received packets with CRC error from MOD 6 through XBAR slot 1/inst 1 and slot 2/inst 1 and slot 3/inst 1
[code]....
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Nov 17, 2011
I have a Nexus 7000 plus 6 boxes NX2000 on backbone.I have configured on 7000 :
conf t
system jumbomtu 9000
exitERROR: Ethernet111/1/1: requested config change not allowed
...
ERROR: Ethernet122/1/48: requested config change not allowed
1/111/14 is a NX2000 port conf tinterface ethernet 1/111/14 switchport mtu 9000 exit
I have gotten this message : Error: MTU cannot be configured on satellite port(s) - Eth122/1/11 ?I have tried on a NX7000 TP port:ERROR: Ethernet10/45: MTU on L2 interfaces can only be set to default or system-jumboMTU ?Does JUMBOMTU configuration can be done only when there are no NX2000 configured ?
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Apr 18, 2012
I've learned recently that the Nexus 7000 only allows the configuration of a maximum of 2 Monitor sessions for spanning traffic. I only have one monitor session left and I need to do the following. 2 Core Nexus 7000 boxes with 2 different traffic probes/sniffers to each nexus( eg Sniffer 1 connects to Switch A on interface eth 1 and to Switch B on eth 1 ; Sniffer 2 connects to Switch A on eth 2 and to Switch B on eth 2.) My plan was to setup a standard session with multiple sources and destinations then on the interfaces connecting to the sniffers run a trunk and do 'sw trunk allowed xxxxx' and filter what I need to go to each sniffer box. However I've recently found out that some of my source traffic is coming from Port-Channel interfaces. Is there a way I can get around this and still do the filtering within only 1 monitor session ?
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Jan 30, 2011
I'm interested to know whether we can configure ip helper in nexus 7000?
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Jun 26, 2012
Are there any dependencies on VTP on the Nexus platforms like the 5500 or 7000? In IOS P V LAN required VTP Transparent mode however I cannot find any reference to this for the Nexus platform. Are there any other features that would require the use of VTP? By default VTP is turned off on nexus and has to be enabled with the feature command so is there any benefit to running VTP in transparent mode vs off?
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Feb 22, 2012
i like to configure two ports in dedicated mode (eth4/1 + eth4/2).the ports are on a modultype "N7K-F132XP-15" (32x10GE)all ports are in one vdc membership (default configuration)
ive tried this for port eth 4/1:
bciscon7k01(config)# int eth 4/1,eth 4/3,eth 4/5,eth 4/7
bciscon7k01(config-if-range)# shut
bciscon7k01(config-if-range)# int eth 4/1
bciscon7k01(config-if)# rate-mode dedicated
after that i get the following message:"Ignoring command for interface Ethernet4/1 as rate-mode is fixed." i didn't find any documentation to this error message.whats wrong in my configuration?
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Feb 3, 2013
I have a Nexus 7000 pair with Etherchannels connecting to various access switches. 2960's and 3750's.The access switches channel 2 ports together. LACP active mode. One link goes to one Nexus and one to the other. Those connections are a portchannel with vpc configured.Every 30 seconds on every interface connecting to one Nexus I see a FCS error. The errors increment at the same time every 30 seconds. Only on one port. If I shutdown that link and keep the channel up on the other link the errors move. No shut the interface and they move back.This must surely be some Nexus generated packet that the access switch does not recognize/ what is likely to be getting sent at 30 sec intervals to all Channel members on one link ?
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Jan 13, 2013
If the latest release of NX-OS 6.1.2 supports dual homing a Nexus 2000 to a pair of Nexus 7000s (F2 Module)? The document does state something about support for vPC+ but is not really clear about it.
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Mar 9, 2013
I have couple of SFP and most of them are working fine except this:-
Nexus7000# show interface ethernet 6/31 transceiver details
[code]...
a) What is the reason this is not getting recognized?
b) Is theSFP SFBR-5766PZ-CS1 plug and play in the 7000 Nexus?
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Feb 21, 2012
future support for IP Sla on the nexus 7000. The latest info that I've seen is that it will/could be supported in release 6.2, scheduled for mid 2012. Does this still accurate?
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Mar 4, 2013
I have one cisco Nexus 7000 with version 6.1(2).I created 3 VDC
ADMINCOREsecurity
I have configured 1 - 45 ports for Core and 46 - 48 ports for Security.Now I am not using the VDC Security and I tried to move the assigned ports 46 - 48 from Security to ADMIN.Switch accepted the command .But the ports are not visible on ADMIN VDC.Now it is not showing on Security VDC also. I need this ports in ADMIN VDC
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