CRS - Link bundle across mixture of line card

[steven.lee]

Hi all, i have the following questions. Hope someone can give me the confirmation.

1) Can we Perform LACP bundle with mixture of 4X100GE-LO and 1X100GBE ?
2) If the answer for question 1 is yes. Is there any limitation or compatibility issue between these line card for LACP in terms of load sharing traffic between links with odd number link (3 or 5 links)?
3) Current software version on CRS is 5.3.3.

regards,

Steven

[tkarnani]

Hi

for #1

from the configuration guide the only restriction is it must be the same speed, maximum ports are 64

https://www.cisco.com/c/en/us/td/docs/routers/crs/software/crs_r5-1/interfaces/configuration/guide/hc51xcrsbook/hc51lbun.pdf

i believe you should be able to use them.

for #2

crs supports the 7 tuples, it depends on the type of traffic being sent.

(i have seen issues with l2vpn, due to polarization) but hard to say without knowing your traffic type

https://www.cisco.com/c/en/us/td/docs/routers/crs/software/crs_r4-0/addr_serv/configuration/guide/b_ic40crs1book/b_ic40crs1book_chapter_011.html

if you do experience some issues, there is a setting you can play with

RP/0/RP0/CPU0:CRS-F(config)#cef load-balancing fields ?
  L3  Layer 3 load balancing
  L4  Layer 3 and Layer 4 load balancing