Cisco WAN :: ASR1002 / 1002F Are Touted To Be Able To Handle Large Routing Tables
Jul 8, 2011
The ASR1002/1002F are touted to be able to handle large routing tables. They are also touted to have the software based IOS HA.What is not stated is that once IOS HA is turned on, the memory left in the router is so miserable that only 1 view of the internet GRT is pratically possible. My grumble is that this isn't documented anywhere and only more recently when the RP2 was launched has this been "corrected". But we have 7 units of ASR1002/1002F all not living up to their initially advertised functionality.
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Nov 20, 2012
we are currently using a modem router LINKSYS WAG120N Wireless-N ADSL Router but are not satisfied. lots of dead zones and I think that there are too many users for this AP. last count gave around 20 users. so I'm looking for a solution to be able to handle 20+ concurrent connections and with large coverage - 600 m² .
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Oct 24, 2012
I have a network with a Catalyst 3750 as the main switch and then some Catalyst 2960 switches that are plugged in to that. I have a server running windows server 2008 with a couple of virtual machines running in Hyper-V. I created 4 VLANS listed below and gave the 3750 the following IP Address.I would like the 3750 to only be configurable from VLAN 40 but currently every VLAN can connect to it, I noticed in the standard web page settings there was a setting for "Management VLAN" but it was set to 1 and would not let me change it, I kinda assumed that was for the management port in the back.-Now the tricky part, I was trying to set up routing between the VLANs and so far I have only been able to get a sort of "all or nothing" routing to work. I can turn IP routing on and add two or more VLANs to the routing and it works fine. But what I was hoping to do is create a couple of "junction vlans" that would only route to one or two other vlans. For instance, I wanted to create a VLAN 100 that routed to VLAN 20 and 30 but nothing else. I also want to route VLAN 1 just to VLAN 30, and so on. I am able to do each one of the cases but only one, it seems like the switch only supports one "routing table" am I missing something or is this just a limitation of the switch?
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Oct 8, 2012
Is a 3750 sw capable of handling full routing tables and what can you recommend in a small mutihomed BGP router or switch capable of handling full routing tables?
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Jun 5, 2012
I am preparing configuration (currently in lab) for Per-Tunnel QoS in DMVPN on ASR 1002F for one of our customers, and I came across one issue. According to restrictions for this feature, I cannot apply per-tunnel QoS in conjunction with interface based QoS. This means, I can provide shaping with hierarchical CBWFQ for each spoke, but I cannot guarantee anything on physical interface! What if there are services in native MPLS? I am also unable give reservations for BGP which is used on PE-CE link! How about monitoring spoke PE-CE links natively? I can only apply policy-map with class-default on physical interface. When I add anything related to queuing for that class (or any other non-default class) I get the message:
R1(config- pmap)class routing
R1(config- pmap-c)#bandwidth 16
service-policy with queuing features on sessions is not allowed in conjunction with interface based
[Code] ........
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Apr 3, 2012
A fair while ago I setup a transparent proxy server running Opensuse (think it was version 10.2), it worked perfectly, cached the http traffic and still allowed https, and other services to be accessed. However the drive in it died so its being setup again.I've got squid running transparently just fine, but I can't get the other services to forward through IP tables.. I know i can't cache HTTP - and nor do I want to. I thought from memory that I had the default option for the sections in iptables to "ACCEPT", and just had rules to redirect the http traffic to squid. However that's exactly what I've got now - and I can't access anything other than port 80.I have Google it and i'm getting so many varied responses people telling saying it can't be done, others saying you have to add a rule for every other port.
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Aug 12, 2012
Now, I use Catalyst WS-C3750G-12S-S as BGP router. But it is switch do not support in higher 65535 (32 bit asn). In future, I plan to use two or three ISP (each will be connected through 1Gb uplink). I need a router, who will be support 32 bit AS number and work with two or three full view BGP tables. I look at Cisco 3900 series, and ASR1002F.
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Dec 11, 2012
How a 6509 pair handles the loss of the other vss switch, and what happens when the other comes back on ?
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Nov 24, 2012
Recently we have upgraded from a cisco 7200 environment to an ASR1002 having to migrate the configs as well.The command "ntp update-calendar" is not accepted in the config migration , any reason why ? doesnt the ASR have an internal hardware clock ?
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Feb 7, 2012
I need to interface an ASR1002 to an ONS-14454 via multimode fiber The ASR1002 will use the 1000Base SFP-GE-S SFP module in one of the built-in Ethernet ports (in 1 of the four ports) The ONS-14454 will use 10/100/1000Base ONS-SI-GE-SX SFP in the Ethernet expansion blade.
Cisco docs indicate each module is supported in specific ASR and ONS but does not indicate interfacing between the two. If these two modules will communicate without error via multimode fiber?
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May 23, 2013
Is the onboard interfaces on an ASR router (4x on ASAR1002, 6x on ASR1002-X) are fixed gigabit or are they 10/100/1000 ?
I assume the interfaces on the 8port Gigabit SPA module are fixed gigabit speed ports (why otherwise sell a 10/100 8port SPA module also ?) no ?
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May 14, 2012
Can a F2 card handle 15000 BGP ipv4 route?
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Dec 19, 2011
Is there a switch that handle its 24/48 ports at 10 Gbps with copper?. I have checked 3750 X but just handle 2 SFP with 10 Gbps.The requirement is to use this switch as CORE and connect 12 switches (access) using its uplinks at 10 Gbps with copper ( in this case 3750 X can be used).using copper at 10 Gbps the distance is still 100 m?
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Dec 19, 2012
I am attempting to upgrade from a Cisco3945 to a ASR1002. On my Cisco3945, I have interface associated with VLANs. It appears that with the new IOSX, VLAN configuration has changed. Any config to setup a simple VLAN?
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May 17, 2012
I have the Cisco 3560 switch. I can ping both from switch to server or from server to switch. However, I cannot ping with large size, for example,
ping 192.168.1.1 size 10000 (failed all).
I can ping 192.168.1.1 size 5000
(the size allow between <36-18024>)
It's normal or a problem with the cable or something else? Because I have the error about working with MSSQL server 2008 R2, the error is:
[DBNETLIB][Connection Write (send()).]General network error. Check your network documentation
OS: Microsoft Server 2008 R2 Standard
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Aug 20, 2012
We have a brand new 2 x 3750-X stack running 15.0(1)SE3 with C3KX-NM-10Gs installed in each switch. An HP C-Class server enclosure with Virtual Connect Flex-10 modules is connected to each of the 10G ports using twin ax cables and they seem to behave OK apart from some random packet drop which appears to be within the enclosure and not without.
However, when we were investigating this, we found a little oddity ... even though we have jumbo frame support enabled on the 3750-Xs, we are getting a significant "Valid frames, too large" received count on the interface, and a "Too large" transmitted count. I've looked around and can't find a definitive reason for this count to go up - it doesn't seem to be a jumbo frames thing, more an unexpected-additional-field-in-a-header type thing, like when you have a V LAN tag in a DTP frame. Any thoughts as to why I might be getting these from a new server enclosure?
SW-STACK-CORE-3750X#sho int t2/1/1 controller
TenGigabitEthernet2/1/1 is up, line protocol is up (connected) Hardware is Ten Gigabit Ethernet, address is a44c.116e.55b5 (bia a44c.116e.55b5) [ code]....
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Jan 12, 2012
I have an 1841 and started to run into an issue which can be resolved but looking to see what you guys prefer to do in this situation. We allow users to connect the laptop via ethernet and wireless to our network at the same time as well as an iPad or any other wireless technology. With that said, for the most part each user has two IP's at any given point. The issue comes in is that I have a large amount of IP exclusions for servers, printers, switches, etc on the exclude list. I am starting to see that the 255 address are not enough to make a long story short. I am also using the 1841 to handle another range for the voice network, which has no isues. What is the best way to fix this issue? Can I run a virtual VLAN off that 1841 for everyone to use and then have the servers, switches, printers, etc on another one? I want to assume no, as both interfaces are used on the back of the 1841 for the two VLANS running now. Or is the only way to handle this with this device to say that as a policy you can only connect assigned company hardware to the network?
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Feb 3, 2013
We are migrating from Catalyst 6509 IOS platforms to Nexus 7009. There's the normal differences in commands which is well doucumented. We do have some quite large files containing ACLs varying from 10's of lines to several 1000's of lines. Our normal upload would be done using tftp and then issuing the command 'conf net' on the the 6509. This is no longer the way to do this on NX-OS. I've tried copy ftp: running-config which works fine for small files but for big ones it takes a long time, in some cases I've see it takes 20-30 minutes. The initilal tftp uplaod to the 7009 seems OK but the copy into the running-config is the bit that takes time and initially I thought I'd killed the 7009!! It did finally come back to the prompt. Are the 7009's simply not designed for large ACLs? I did try the configure session (Session Manager) but I couldn't see a way of uploading a file. I tried creating a new session and then exiting it, copying in a file of the same format and then commiting it but it didn't seem to acknowledge the file (checksum?).
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Feb 8, 2011
A question concerning the use of REP for IE-3000-4TC switches:
In figure 14 of REP pdf URL can you explain why this creates a loop in the system? From the document, I thought REP and RSTP could talk to each other so why does this create a loop if they are exchanging information between each other? Also, if, in figure 14, the two switches in the STP domain that connect to the REP ring, were also connected to each other, would there still be a loop in the system?
Also, what is the recommended max diameter a REP ring should be. I thought I read some place 130 nodes is ok, but I'm looking to confirm this.
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Feb 28, 2012
Our office lan network is in 192.168.0.0/16 with 300 nodes and 30 server .Since its a large broadcast domain some times it takes large time for copying files.How can we avoid this problem with out changing the subnet.Also how to avoid broadcast storm.we are using cisco 2950 series switch.
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Apr 3, 2013
we have two 6509E, as our core switches. Recently I noticed that on some connections I have a high output queue drop rate.
These 4 x 2 interfaces (gigabit) are connected to our blade encolure, consisting of 4 x WS-CBS3120X-S. The utilization of the links is really quite low, when I see the increase of the drops. (~=60Mbps). All the links are fiber (SFP) and the distance between the core switches and the enclosure is about 15-20m.
I am not aware of any service degradation on the part of the servers. No CRCs, collisions etc, on the interfaces, apart from the drops.
The line card is a WS-X6748-SFP, but other interfaces don't seem to be experiencing any problems.
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Aug 16, 2012
I have been searching the message boards and wasn't having much luck. I am running some monitoring sessions on my 6509 and on the VLAN I am monitoring, I am experiencing a really large packet loss. If we hook up a laptop to the destination port and run wireshark we are seeing between 80% and 90% packet loss. I dont see the packet loss on the show port command, but I do on the show int vlan command.
The config is as follows:
Session 2
---------
Type : Local Session
Source VLANs :
RX Only : 500
[Code].....
I was doing some reading on Egress vs Ingress and I am wondering if the Egress SPAN replication state could be causing the packet loss that we are seeing or does the ingress & learn command override that?
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Dec 6, 2011
We are receiving a large amount of output drops on 4 interfaces that connect to microwave wireless.This is playing up with our Management system. Saw a bug report but that was for 3750, not the IOS version but was a similar issue. [code] The output errors tend to happen at the same time. All ports are trunks however there are other trunks on the switch that are not having these issues. [code]
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Jan 17, 2012
see the attached diagram to explain the network. I'm trying to do a "port-to-port" layer 2 connection on an ASR that will bi-directionally bridge a physical interface to a sub-interface. I tried using " connect VLAN200 Gig0/1/0 Gig0/0/3.200 interworking ethernet " but I'm not getting traffic through the connection.
I don't think BDI will work because it requires a Layer 3 point. I have to make this Layer 2 switching.
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May 8, 2013
I have a ISR 891 (no-wifi) router that I have been using on a 20Mbps x 20Mbps fiber circuit. It was been performing just fine. I am upgrading the curcuit to 50Mbps x 50Mbps soon, and I wanted to check if this router can handle that much load.
I don't do anything fancy with the router, just plain old routing (I have a firewall behind it).
Do you think the 891 can handle 50Mbps up/down, and if not what would you recommend for this new setup of 50x50Mbps.
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Jun 5, 2011
I have read that the cisco 1841 can handle up to 100 VPN tunnels by default. Can this IOS version handle SSL VPN tunnels as well?
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Aug 3, 2011
I am trying to set up a VPN between my Cisco 867w device and the Amazon EC2 VPC solution. Amazon have stated that the Cisco ISR routers of IOS 12.4t and above should work, but when trying to input the config generated form the Amazon system into the router, the BGP config lines are not recognised. Does this router support BGP?
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Nov 25, 2011
Our IPS has given us a second range of IPs as we were running out. Unfortunately, they can only give us two non overlapping range. I am running two ASA 5520 in fail over to handle our traffic but I don't know the best way to use both external ranges. This is not a failover scenario -- and I need outward facing servers on both ranges. It is adventageous to us to keep the two external subnets separating two of our operations so we don't want to bring everything into one subnet (long story).I have one NIC designated outside that will need to cater for both wans. As there are two subnet there are two gateways. How do I keep the traffic on track?
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Jul 17, 2012
how many clients simultaneously associate with Cisco AP 1252G.. right now when I try to connect more thn 25 rest unable to access the AP. Clients (smart phones plus laptops) are using 802.11b/g standard.
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Aug 25, 2012
I am going to configure the NATing on ASR1002 and expecing to have near about 1Million nat translation. Will ASR1002 support 1million nat translations ? how many NAT translations are supportable on the ASR1002 ?I am going to configure NAT on ASR1002-5G/K9 U& have FLASR1-FWNAT-RED.
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May 29, 2013
Right now I have a ASR1002 running a very old IOS version.Cisco IOS Software, IOS-XE Software (PPC_LINUX_IOSD-ADVENTERPRISEK9-M), Version 12.2(33)XNE, RELEASE SOFTWARE (fc1) asr1000rp1-ipbasek9.02.05.00.122-33.XNE.bin – 25-NOV-2009?
I am looking to upgrade to a newer version.I was wondering if there are any tricks when upgradeing this IOS. Is it as easy as loading the IOS onto the ASR and then changing the bootpath or is there an upgrade path I must follow? Also would there any need for a licence between 2.x and 3.x.
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Jan 27, 2011
The loopback of the ASR1002 is 2.2.2.2. When I use a browser to access it, I got the authentication dialog box asking for username/password. I input the information and submit. But authentication box comes back again and ask for the username/password.
The username/password is test okay. But somehow, the web GUI just does not use it.
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Apr 5, 2013
I was wondering how this would work if your hard drive can't write at 1Gbps. How exactly would this work? Like mine only goes 35.03MBps which isn't even half a Gb per second.
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