[c-nsp] 3550 layer 3 switch replacement for v6

[Mark Price]

2010/12/12 Łukasz Bromirski <lukasz at bromirski.net>

> Can you be more specific please? Can you post a TCAM overflow
> information and the state in which the hardware resources were at that
> moment? Because from what I understand from your mail, you overflow
> the TCAMs before the SDM template theoretical limits for FIB.
>


Yes, please see following.  My understanding is that the routing protocol
information from ospf is making the masks/values fill up faster than normal
static routes.  Let me know what you think:



#sho sdm prefer
 The current template is "desktop IPv4 and IPv6 default" template.
 <snip>
  number of IPv4 unicast routes:                    3K
    number of directly-connected IPv4 hosts:        2K
    number of indirect IPv4 routes:                 1K


#sho platform tcam util

CAM Utilization for ASIC# 0                      Max            Used
                                            Masks/Values    Masks/values

 Unicast mac addresses:                        672/5376         72/490
 IPv4 IGMP groups:                             152/1216          6/26
 IPv4 unicast directly-connected routes:       672/5376         72/490
 IPv4 unicast indirectly-connected routes:     144/1152        134/1029
    <---
 IPv6 Multicast groups:                        672/5376         72/490
 IPv6 unicast directly-connected routes:       672/5376         72/490
 IPv6 unicast indirectly-connected routes:     128/1024         11/42
 IPv4 policy based routing aces:                 0/0             0/0
 IPv4 qos aces:                                768/768         260/260
 IPv4 security aces:                          1024/1024         33/33
 IPv6 policy based routing aces:                 0/0             0/0
 IPv6 qos aces:                                  0/0             0/0
 IPv6 security aces:                           204/510           5/5


#sho ip route sum
IP routing table name is Default-IP-Routing-Table(0)
IP routing table maximum-paths is 32
Route Source    Networks    Subnets     Overhead    Memory (bytes)
connected       0           198         12800       30096
static          0           102         6528        15504
ospf 100        30          279         19776       46968
 Intra-area: 162 Inter-area: 0 External-1: 0 External-2: 147
 NSSA External-1: 0 NSSA External-2: 0
internal        30                                  35160
Total           60          579         39104       127728