Cisco WAN :: How Many OSPF Routes Does Catalyst 3750 Support

Aug 16, 2012

I just want to know how many ospf routes a catalyst 3740 support ?The cisco doc or datasheets doesn't answer this clearly. Because there is only a statement "unicast routes"!? Does this means all unicast routes (eigrp, ospf....static)If so, there is a statement for about 10k routes ?

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Cisco WAN :: Filtering Outbound Routes In OSPF (Catalyst 4500 IOS XR)

May 5, 2013

We are redistributing routes from BGP to OSPF and we want to filter out some of this routes from the OSPF proccess to be announced to neightbours.We want to announce some networks from ASR#1 to Catalyst. We are redistributing them from BGP to OSPF Area 0. Then, to prevent loops in the topology, these routes have to be filtered out from been redistributed from Area 0 to Area 1 in the Catalyst, so Enterasys appliances don't install those routes through OSPF but to point them out through default route to ASR#2.Is it possible with only one OSPF proccess or we have to separate OSPF in two proccess to redistribute between them?

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Cisco Switching/Routing :: Catalyst 3750X OSPF Support In IP Base Image?

Apr 3, 2011

I'm trying to work out if I need to order the "IP services" image for a couple of C3750-X.  I need to run OSPF on these switches, but find the IOS image requirements on Cisco contradict.
At the top of the data sheet it says: • Open Shortest Path First (OSPF) in IP Base image

On the product info page it says: IP Base: Enterprise Access Layer 3 Switching, including OSPF (Open Shortest Path First) for routed access 
But in lots of other places it says you need 'IP services' for OSPF.
As the IP services IOS is quite a bit more expensive I would like to avoid buying it. What image do I need to run OSPF?

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Cisco Switching/Routing :: Does 3750 / 3560 Switch Support Eigrp Or Ospf

Feb 17, 2013

I believe the answer is yes, but incorperating more layer 3 features of our 3750's, I want to know if they fully support EIGRP or OSPF?
Also for a small business of 4 locations, each with a 10mbps fiber and a 1.5mbps mpls... wouldn't you say EIGRP would be easier?  Want to look at making the failover automatic if the 10mbps fiber goes down between a site, then the network fails over to 1.5mbps mpls. When the fiber returns in service then the network automatically preferr the fiber again. 
Currently we use static routes and if there is a provider outage we have to manually edit the config to flip flop the routes.

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Cisco Security :: Catalyst 3750 Support Private Vlan?

Feb 12, 2004

i want to know if the new Catalyst 3750 Support Private Vlan ?
or any other small Switches

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Cisco WAN :: AS 300 Why Redistribution From OSPF To BGP Didn't Advertise O E2 Routes

Jan 9, 2012

I am facing two issues in BGP both the topology and Config files.Because the link between Vail and Telluride runs iBGP, both routers will learn about the networks in AS 300 and AS 400 through native BGP only and both AS's do reach each other. Both routers are also running OSPF with Aspen and BGP routes are redistributed into OSPF domain. Now, Aspen knows about the networks in AS 300 and AS 400. Now suppose the link between Vail and Telluride fails, both AS 300 and AS 400 can't reach each other anymore. The only solution to this is to redistribute OSPF routes to BGP on Vail and Telluride. But when i did this, only routes with "O" learned by Tahoe and Alta. In other words, Tahoe sees only, and Alta sees only the same routes. Why the redistribution from OSPF to BGP didn't advertise the O E2 routes?
This actually was discussed before but i still can't get it. It is not an actual issue.It is about "Syncronization". I know that we've said many times to turn on Sync. when we do redistribution from BGP to an IGP to make sure that the routes are installed correctly in the IGP routing table. However, as you notice in the configuration, i didn't enable Sync. on Vail and Telluride for a long time and redistribution still works fine.

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Protocols / Routing :: How To Make Sure R11 Is Able To Get OSPF Routes Of All Areas

Oct 19, 2012

How can I make sure R11 is able to get the OSPF routes of all the areas. Make sure area-278 does not receive any ospf routes from other areas as well as from ASBR routes from other areas. At the same tim, area-278 should be able send successfully RIP routes that we receive from R2 to backbone area.

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Cisco WAN :: 2620XM OSPF Routes Are Not Populating In Ip Route Display

Nov 19, 2011

I have a Cisco 2620XM Router, running ver. 12.2 (7r). I have OSPF connected, however the OSPF routes are not populating in the sh ip route display. The  neighbor relationship is established. The sh ip ospf database does display the other routers running ospf, however only connected (C) and static (S) routes appear.

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Cisco Switching/Routing :: 3660 - ASA OSPF Filtering Inbound Routes?

Feb 11, 2013

How filter inbound routes in Cisco ASA OSPF? Because Cisco ASA has no "distibute-list" command for OSFP process configuration, I try to use "filter-list" command in area definition. So, I try to use next configuration:
R1 (Cisco 3660):
router ospf 1


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Cisco Switching/Routing :: 4507 Pb To Propagate Ospf Routes To Another Router On

Nov 15, 2011

On a 4507 v12.2(20)EW, the connected subnets which are declared in the ospf instance are not propagated to the MPLS carrier router.Only the static routes which are redistributed in the ospf instance are propagated to the MPLS carrier router.

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Cisco Switching/Routing :: 6500 OSPF External Routes Churn

Oct 7, 2012

I am observing some strange behaviour related to the routing table, almost all external routes and some inter-area routes are getting refreshed every 10 seconds.
I am getting more than 1000 entries after running 'sh ip route | i 00:00:0', these external routes are being advertised by a neighbor 6500 which redistributing these static routes.
Platform is 6500 with SUP-720

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Cisco WAN :: ME3400 / Injecting Two Default Routes Via Ospf Into Service Provider MPLS?

Jan 24, 2011

We have multiple sites that are linked via MPLS (L3) circuits. We have good size circuits for Internet at two main sites (HQ and QC) and smaller sites come to HQ site to go to internet. We are running ospf (Cisco L3 switches) with service provider (ME3400) at these two main sites and service provider then redistributes routes back into MPLS via BGP and then smaller sites ME3400 learn these routes. i am injecting default routes from HQ and QC, but Telco is only redistributing default from HQ. So large pipe Internet at QC is not being used effeciently. Also if MPLS at HQ fails, then we are told, we need to call Telco and they will make change in their network to now start distributing default from was my understanding that telco can use BGP communities and advertize one default as prefered and second with higher cost, so that failover can occur automatically. And that they can also set up so that west cost sites use HQ and east cost sites can use QC for going to internet, but they say it is not the least, can I do something like this at my end for failover for internet, in case MPLS at HQ goes down (soon we will be setting up a point to point VPN tunnel between HQ and QC so that MPLS failure at HQ will trigger advertisement of HQ routes over tunnel via QC into MPLS, so other sites can then come to HQ thru QC over this tunnel. At QC Cisco router (to detect loss of default route from HQ and then start advertizing default from QC) 
router ospf 1
 default-information originate always route-map From_HQ
 ip access-list standard From_HQ


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Cisco WAN :: How Many Routes Support 7206VXR With NPE-G2

Jul 24, 2011

How many routes support 7206VXR with NPE-G2?

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Cisco WAN :: How Many IP Routes Does 3825 Support

Jan 23, 2011

I want to know the number of routes supported by CISCO3825-HSEC/K9(512MB DRAM).

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Cisco WAN :: ASR 1000 With 4M Routes Support

Jul 5, 2011

For ASR1000 to support 4M routes, RP2 must be used. 
1) RP2 need to have 16GB memory in order to support 4M routes?
2) Need to use ESP20/40 together with RP2?
3) If RP2 + ESP10, supporting route table size down to 1M?
4) 4M routes is shared for both IPv4 an IPv6?
5) SIP card will affect route table size?

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Cisco WAN :: WS-C3560G-48TS-E How Many BGP Routes It Can Support

Feb 7, 2012

We are planning to run BGP on our pair of 3560G switch, I would like to know how many bgp routes it can support? it currently running on advance IP service.

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Cisco WAN :: Support For OSPF For 3560C

May 13, 2013

I am in the datasheets page for Cisco 3560C Compact switch and states that it ships with IP Base image that "includes the support for routed access, MACsec, and Open Shortest Path First (OSPF)"
Does this image come with the full fledged OSPF feature or is it a cut-down version of it?

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Cisco Switching/Routing :: To Issue Eigrp Leaking Routes On Catalyst 6500

Mar 26, 2012

Is it possible to issue eigrp leaking routes on catalyst 6500 running IOS 12.2-33SXI9 on gigabitethernet interfaces? or is there another way to acomplish this?

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Cisco WAN :: 3750 Cannot See Routes Being Exchanged Between Cat3750_2 And ASA

Sep 11, 2011

I have a question regarding EIGRP.I have an ASA and two 3750 switches connected as follows  ASA---eth----Cat3750_1----eth----Cat3750_2.All of them are configured for eigrp 100. Routes are being exchanged between ASA and Cat3750_1 and between Cat3750_1 and Cat3750_2. But for some reason I cannot see the routes being exchanged between Cat3750_2 and ASA. [code]

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Cisco Switching/Routing :: IOS For Support Of OSPF And BGP In 6509-E

Sep 13, 2012

If i look at the Feature Navigator , it says that IP Base Supports OSPF and EIGRP. But if i look at the Cisco Link it contradicts the Cisco Feature Navigator.
if I have 6509-E with VSS-SUP720-10G and want to run OSPF and BGP on the Switch. What is the IOS i require? WIll IP Base Suffice or i need to take Advance or Enterprise Image.

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Cisco Switching/Routing :: Catalyst 6503 OSPF On Vlan Interface?

Oct 24, 2011

i'd like to configure OSPF on a Catalyst 6503 IOS 12.2.17.i habe an Gi1/9 with the ip address and a VLAN 19 with the IP Address configured OSPF like this
router ospf 1
network area
network area
on the ospf peer is see that the adjaceny is established but i don't get the routes for the network i checked the ip ospf interface vlan 19; i got ospf is not enabled on the interface then i tried to configure

int vlan 19
ip ospf 1 area
but it does not access ip ospf 1

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Cisco Switching/Routing :: 3560X-24P-L Switch OSPF Support?

Mar 21, 2012

I acquired a 3560X-24P-L Switch which I wanted to use at our datacenter.  However, I need a switch that supports OSPF.  It came with a Universal IOS but there was no "Router" command under conf t.  I downloaded and applied the latest "IP Base" IOS, but still no Router OSPF.  Based on the matrix here > [URL] I thought "IP Base" supported OSPF, but what exactly is "OSPF for routed access" ?  Do I actually need an "IP Services" IOS?  From my download options, I do not see an IP Services IOS for the 3560X-24P-L so I'm left to assume that the switch does not support L3 / OSPF.  So my question is this particular switch supports L3 / OSPF and what is Universal IOS?

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Cisco WAN :: EIGRP Not Fully Passing Routes After Introducing 3750

Apr 8, 2013

We've put in a 3750 at our corp hq (Detroit).  We did this to break up the current flat /16 network into separate VLAN's for various purposes.  We plan on doing that at another site (Farmington), which will become a DR site.  We are running EIGRP throughout the organization over an OPTEMAN netowrk and also sending routes to a managed MPLS network which uses BGP.  BGP redistributes into EIGRP and vice versa.  I've attached a pdf of the network.  The 3750 core at the corp hq is a temp core, hopefully upgrading to Nexus within a year or two.  This problem didn't exist until the 3750 was introduced and became the gateway for the site.  The OPTEMAN router was the gateway and was on the same VLAN as the MPLS router.
So, in detroit we have an Detroit-MPLS router, Detroit-3750, and Detroit-OPTEMAN.  What I'm seeing is that the routers I'm getting from the MPLS router make it to the 3750.  The 3750 advertises those routes to the Detroit-OPTEMAN router.  However, the OPTEMAN router doesn't advertise these routes any further..
In Farmington, it is currently set up like Detroit used to be set up.  There is a flat network and both routers are on the same VLAN, no L3 core switch.  Routes come in from the MPLS, get advertised to the Farmington-OPTEMAN router, distributes the routes out to all OPTEMAN connected routers, including Detroit.  However, Detroit is not passing that route to the 3750.
When we made the 3750 stack the core, we didn't change anything else, except for some IP changes. Why these routes aren't fully redistributing?
Detroit-3750 Stack
WS-C3750G-24TS-S   <-Stack master running c3750-ipservicesk9-mz.122-55.SE7.bin
WS-C3750X-12S-E  <-Running c3750e-universalk9-mz.122-55.SE7
show sdm prefer
The current template is "desktop routing" template.

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Cisco WAN :: 3750 - ISIS OSPF Redistribution

Mar 27, 2013

We are currently running ISIS and recently we have purchased 2 WS-C3750X-24. Unfortunately 3750 do not support ISIS and we have decide to use redistribution between ISIS and OSPF. We are using Stack feature so consider 3750 as one chassis. 

Router A and Router B are ISIS neighbors. As first step we have setup redistribution between Router A and Switch 3750
Router A Configuration router isis
net 49.0000.0000.0000.0001.00
metric-style wide
[ code]...
Switch 3750 Configuration
router ospf 1
passive-interface Vlan3
[ code]...
From Router's A routing table we see the ospf routes life is good Switch routing table has E2 - OSPF external type 2 routes and is reachable from the rest of the network.
Router A #show ip route ospf 1 Gateway of last resort is not set O192.168.10.64/27 [110/2] via, 2d01h, GigabitEthernet1/20  [110/2] via, 2d00h, GigabitEthernet1/19 
When we bring up the ospf adjacency with Router B the whole ISIS routes are replaced with E2 - OSPF external type 2 which is not desirable.
Router B Configuration
router isis
net 49.0000.0000.0002.00
[ code]...

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Cisco Switching/Routing :: 3560-C Series L3 Switches Support OSPF?

Jul 16, 2012

OSPF normally only comes with IPservices image and not IP Base image. The 3560-C series data sheet says that it only suport IP Base image, yet it mentions that support for OSPF in included. Are there any restictions in the OSPF support?.

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Cisco Switching/Routing :: Nexus 5500 Support OSPF ECMP?

Jan 8, 2013

Does the Nexus 5548/5596 switch support OSPF ECMP?
Also on OSPF and ECMP, the load-balancing method at the multiple links for Catalyst 3750 is per IP packet or per destination IP?

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Cisco WAN :: 3750 OSPF Neighbor Stuck In Exstart

May 5, 2012

We have an existing network with OSPF configured between 3750's (DR and BDR) this is working fine.But the Nexus 7k which has been configured to run OSPF, won't established the adj. It is in the same network/subnet.The MTU is 1500.

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Cisco Switching/Routing :: 6509 / 3750 - No Default Gateway Or Static Routes To Any IP

Mar 5, 2013

We have a 6509 series of core switches and 3750 series of L2 switches, There is no default gateway or any static routes to any IP.VLAN 1 is made admin down and another vlan is used for all communication here in this environment

Attached is configuration for reference But still I am able to take telnet or SSH. I want to know how telnet or SSH or tacacs authentication happens without any static or default route.

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Cisco Switching/Routing :: 3750 - How To Distribute Static Route Via OSPF

Mar 26, 2013

We have a 14 offfice MPLS network.  All offices have Cisco 3750s running OSPF which replicate route tables via our providers BGP peers.   I am introducing a new network in our SF office which is not directly connected so in SF we have a static route "ip route I want our other offices to learn this route route via OSPF so that they know how to get to the new network.  My problem is that of course remote sites do not see our static routes and i  have tried to add this via ospf but the switch will not propagate this route because it is not directly connected to the switch in SF.
router ospf 1
network area


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Cisco WAN :: EIGRP 101 - Prefer External Routes Versus Internal Routes?

Apr 8, 2011

Is there a way in EIGRP to prefer external routes versus internal routes. EIGRP always picks up internal routes as long as they are available, no matter if external routes have better metric. Our Scenario is that we have DMVPN hub and spoke topology running EIGRP 101. The Core routers also on EIGRP 101 prefer EIGRP 101 routes. We have the new MPLS network running BGP and redistributing these BGP routes into EIGRP 101. The core routers prefer EIGRP 101 routes (internal) to redistributed BGP (external) routes.

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Cisco WAN :: Does Catalyst 4900m Support IP-SLA

Oct 30, 2011

Catalyst 4900m does not support command "ip sla <entry-number>" like Catalyst 6500. If 4900 does support SLA, how to configure it then? [code]

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Cisco WAN :: AGFR01RTR03 / AGFR02RTR03 - Missing Route In OSPF To OSPF Redistribution?

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
  Known via "ospf 1000", distance 110, metric 300, type inter area
  Last update from on GigabitEthernet5/1, 1d03h ago
  Routing Descriptor Blocks:
  *, from, 1d03h ago, via GigabitEthernet5/1
Route metric is 300, traffic share count is 1


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Cisco WAN :: VLAN 160 / 162 - Different OSPF Process ID For Interconnect Between 2 OSPF Domain

Mar 14, 2011

Currently the OSPF network consist of 2 segment route via static route.One is AREA 0 and another AREA 10.Both network are seperate entity, only static route to route between 2 networks.But the static route do not provide the dynamically and flexibility, I plan to run routing between 2 networks via VLAN160 and VLAN162.

I still want to manitnace it was 2 different OSPFrouting domain.Can I  run OSPF with differrent OSPF porcess ID?

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