You're fine. Here's data from a production 1941 I have running full tables
against 2 ISPs:
EXAMPLERT#show ver
Cisco IOS Software, C1900 Software (C1900-UNIVERSALK9-M), Version
15.2(4)M5, RELEASE SOFTWARE (fc2)
ROM: System Bootstrap, Version 15.0(1r)M16, RELEASE SOFTWARE (fc1)
EXAMPLERT uptime is 29 weeks, 1 day, 1 hour, 19 minutes
System returned to ROM by power-on
System restarted at 15:30:10 EST Mon Nov 4 2013
System image file is "flash0:c1900-universalk9-mz.SPA.152-4.M5.bin"
Last reload type: Normal Reload
Last reload reason: power-on
Cisco CISCO1941/K9 (revision 1.0) with 1540064K/32768K bytes of memory.
Processor board ID FGL1710267F
2 Gigabit Ethernet interfaces
1 terminal line
1 Virtual Private Network (VPN) Module
DRAM configuration is 64 bits wide with parity disabled.
255K bytes of non-volatile configuration memory.
250880K bytes of ATA System CompactFlash 0 (Read/Write)
EXAMPLERT#show bgp sum
BGP router identifier 192.0.2.86, local AS number 99999
BGP table version is 156905939, main routing table version 156905939
493792 network entries using 73081216 bytes of memory
796816 path entries using 50996224 bytes of memory
125165/76957 BGP path/bestpath attribute entries using 17022440 bytes of
memory
111548 BGP AS-PATH entries using 3906496 bytes of memory
53 BGP community entries using 1272 bytes of memory
0 BGP route-map cache entries using 0 bytes of memory
85 BGP filter-list cache entries using 1360 bytes of memory
BGP using 145009008 total bytes of memory
BGP activity 5030767/4536967 prefixes, 47981574/47184758 paths, scan
interval 60 secs
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down
State/PfxRcd
A.B.C.3 4 99999 24831954 53177412 156905939 0 0 29w0d
303107
192.0.2.85 4 12345 14099722 189456 156905766 0 0 8w4d
493708
EXAMPLERT#show proc cpu his
EXAMPLERT 05:52:06 PM Tuesday May 27 2014 EDT
3333 3
555522222111111111166666111113333311111111111111111111111118
100
90
80
70
60
50
40 **** *
30 **** *
20 **** *
10 **** ***** *
0....5....1....1....2....2....3....3....4....4....5....5....6
0 5 0 5 0 5 0 5 0 5 0
CPU% per second (last 60 seconds)
323222221222212222122221222212222222221713322122222222122221
851411112111161211311117111251111212116534111831111311611115
100
90
80 *
70 *
60 *
50 *
40 * *
30 *** * **
20 ******** ********* ********************* *******************
10 ***************************************#**************#*****
0....5....1....1....2....2....3....3....4....4....5....5....6
0 5 0 5 0 5 0 5 0 5 0
CPU% per minute (last 60 minutes)
* = maximum CPU% # = average CPU%
775445444644556544344454444444444444444444454544444444544444444445566767
567621787587282193971410497327888444901589347389489043455066847752745797
100
90
80 **
* *
70 ** *
****
60 *** * **
******
50 **** ************ * * ** **** * *** ***** ** *** ***
**********
40
************************************************************************
30
************************************************************************
20
************************************************************************
10
************************************************************************
0....5....1....1....2....2....3....3....4....4....5....5....6....6....7..
0 5 0 5 0 5 0 5 0 5 0 5
0
CPU% per hour (last 72 hours)
* = maximum CPU% # = average CPU%
EXAMPLERT#show mem
Head Total(b) Used(b) Free(b) Lowest(b)
Largest(b)
Processor 293BEE80 1422102912 515694856 906408056 900406788
842952540
I/O E000000 33554432 17432604 16121828 15865264
13769932
EXAMPLERT#show ip ro sum
IP routing table name is default (0x0)
IP routing table maximum-paths is 32
Route Source Networks Subnets Replicates Overhead Memory
(bytes)
connected 0 12 0 720 2160
static 0 7 0 840 1260
bgp 99999 164566 329227 0 29627580 88882740
External: 352814 Internal: 140979 Local: 0
internal 5797 20287420
Total 170363 329246 0 29629140 109173580
On Tue, May 27, 2014 at 5:46 PM, Ryan Jensen <[email protected]> wrote:
> Hi All,
> I'm about to bring up peerings with two ISPs. Today, I have two peerings
> with 1 ISP, only sending me 1 default route.
> I'm dropping a circuit and bringing in another ISP circuit. I have a
> requirement to load-balance across the two circuits, hence the need for
> full tables. Let BGP do its thing and pick the best path to the
> destination.
>
> Question:
> I have a pair of 2921, one on each circuit, each with maxed 2.5gb Ram.
> Am I crazy to think these routers will handle the full tables? My current
> ISP just told me we're looking at just a bit over 490k routes.
> _______________________________________________
> Free CCIE R&S, Collaboration, Data Center, Wireless & Security Videos ::
>
> iPexpert on YouTube: www.youtube.com/ipexpertinc
>
_______________________________________________
Free CCIE R&S, Collaboration, Data Center, Wireless & Security Videos ::
iPexpert on YouTube: www.youtube.com/ipexpertinc
